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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CVE-2014-6416 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://tracker.ceph.com/issues/8979', 'name': 'http://tracker.ceph.com/issues/8979', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142060', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142060', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2014/09/15/7', 'name': '[oss-security] 20140915 Re: CVE Request: libceph auth token overflow / Linux kernel', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://www.ubuntu.com/usn/USN-2377-1', 'name': 'USN-2377-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2376-1', 'name': 'USN-2376-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2379-1', 'name': 'USN-2379-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2378-1', 'name': 'USN-2378-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/69805', 'name': '69805', 'refsource': 'BID', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-119'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.16.2', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Buffer overflow in net/ceph/auth_x.c in Ceph, as used in the Linux kernel before 3.16.3, allows remote attackers to cause a denial of service (memory corruption and panic) or possibly have unspecified other impact via a long unencrypted auth ticket.'}] | 2015-04-30T02:00Z | 2014-09-28T10:55Z | Improper Restriction of Operations within the Bounds of a Memory Buffer | The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. |
Certain languages allow direct addressing of memory locations and do not automatically ensure that these locations are valid for the memory buffer that is being referenced. This can cause read or write operations to be performed on memory locations that may be associated with other variables, data structures, or internal program data.
As a result, an attacker may be able to execute arbitrary code, alter the intended control flow, read sensitive information, or cause the system to crash.
| https://cwe.mitre.org/data/definitions/119.html | 0 | Ilya Dryomov | 2014-09-09 19:39:15+04:00 | libceph: do not hard code max auth ticket len
We hard code cephx auth ticket buffer size to 256 bytes. This isn't
enough for any moderate setups and, in case tickets themselves are not
encrypted, leads to buffer overflows (ceph_x_decrypt() errors out, but
ceph_decode_copy() doesn't - it's just a memcpy() wrapper). Since the
buffer is allocated dynamically anyway, allocated it a bit later, at
the point where we know how much is going to be needed.
Fixes: http://tracker.ceph.com/issues/8979
Cc: [email protected]
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]> | c27a3e4d667fdcad3db7b104f75659478e0c68d8 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ceph_x_verify_authorizer_reply | ceph_x_verify_authorizer_reply( struct ceph_auth_client * ac , struct ceph_authorizer * a , size_t len) | ['ac', 'a', 'len'] | static int ceph_x_verify_authorizer_reply(struct ceph_auth_client *ac,
struct ceph_authorizer *a, size_t len)
{
struct ceph_x_authorizer *au = (void *)a;
struct ceph_x_ticket_handler *th;
int ret = 0;
struct ceph_x_authorize_reply reply;
void *p = au->reply_buf;
void *end = p + sizeof(au->reply_buf);
th = get_ticket_handler(ac, au->service);
if (IS_ERR(th))
return PTR_ERR(th);
ret = ceph_x_decrypt(&th->session_key, &p, end, &reply, sizeof(reply));
if (ret < 0)
return ret;
if (ret != sizeof(reply))
return -EPERM;
if (au->nonce + 1 != le64_to_cpu(reply.nonce_plus_one))
ret = -EPERM;
else
ret = 0;
dout("verify_authorizer_reply nonce %llx got %llx ret %d\n",
au->nonce, le64_to_cpu(reply.nonce_plus_one), ret);
return ret;
} | 178 | True | 1 |
|
CVE-2014-6417 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2014/09/15/7', 'name': '[oss-security] 20140915 Re: CVE Request: libceph auth token overflow / Linux kernel', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142072', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142072', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://tracker.ceph.com/issues/9560', 'name': 'http://tracker.ceph.com/issues/9560', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://tracker.ceph.com/issues/8979', 'name': 'http://tracker.ceph.com/issues/8979', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://www.ubuntu.com/usn/USN-2377-1', 'name': 'USN-2377-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2376-1', 'name': 'USN-2376-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2379-1', 'name': 'USN-2379-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2378-1', 'name': 'USN-2378-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.16.2', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'net/ceph/auth_x.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly consider the possibility of kmalloc failure, which allows remote attackers to cause a denial of service (system crash) or possibly have unspecified other impact via a long unencrypted auth ticket.'}] | 2014-10-24T07:28Z | 2014-09-28T10:55Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Ilya Dryomov | 2014-09-09 19:39:15+04:00 | libceph: do not hard code max auth ticket len
We hard code cephx auth ticket buffer size to 256 bytes. This isn't
enough for any moderate setups and, in case tickets themselves are not
encrypted, leads to buffer overflows (ceph_x_decrypt() errors out, but
ceph_decode_copy() doesn't - it's just a memcpy() wrapper). Since the
buffer is allocated dynamically anyway, allocated it a bit later, at
the point where we know how much is going to be needed.
Fixes: http://tracker.ceph.com/issues/8979
Cc: [email protected]
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]> | c27a3e4d667fdcad3db7b104f75659478e0c68d8 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ceph_x_verify_authorizer_reply | ceph_x_verify_authorizer_reply( struct ceph_auth_client * ac , struct ceph_authorizer * a , size_t len) | ['ac', 'a', 'len'] | static int ceph_x_verify_authorizer_reply(struct ceph_auth_client *ac,
struct ceph_authorizer *a, size_t len)
{
struct ceph_x_authorizer *au = (void *)a;
struct ceph_x_ticket_handler *th;
int ret = 0;
struct ceph_x_authorize_reply reply;
void *p = au->reply_buf;
void *end = p + sizeof(au->reply_buf);
th = get_ticket_handler(ac, au->service);
if (IS_ERR(th))
return PTR_ERR(th);
ret = ceph_x_decrypt(&th->session_key, &p, end, &reply, sizeof(reply));
if (ret < 0)
return ret;
if (ret != sizeof(reply))
return -EPERM;
if (au->nonce + 1 != le64_to_cpu(reply.nonce_plus_one))
ret = -EPERM;
else
ret = 0;
dout("verify_authorizer_reply nonce %llx got %llx ret %d\n",
au->nonce, le64_to_cpu(reply.nonce_plus_one), ret);
return ret;
} | 178 | True | 1 |
||
CVE-2014-6418 | False | False | False | False | AV:N/AC:M/Au:N/C:N/I:N/A:C | NETWORK | MEDIUM | NONE | NONE | NONE | COMPLETE | 7.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2014/09/15/7', 'name': '[oss-security] 20140915 Re: CVE Request: libceph auth token overflow / Linux kernel', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://tracker.ceph.com/issues/9561', 'name': 'http://tracker.ceph.com/issues/9561', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Vendor Advisory']}, {'url': 'http://tracker.ceph.com/issues/8979', 'name': 'http://tracker.ceph.com/issues/8979', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142073', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142073', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2377-1', 'name': 'USN-2377-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2376-1', 'name': 'USN-2376-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2379-1', 'name': 'USN-2379-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2378-1', 'name': 'USN-2378-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.16.2', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'net/ceph/auth_x.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly validate auth replies, which allows remote attackers to cause a denial of service (system crash) or possibly have unspecified other impact via crafted data from the IP address of a Ceph Monitor.'}] | 2014-10-24T07:28Z | 2014-09-28T10:55Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Ilya Dryomov | 2014-09-09 19:39:15+04:00 | libceph: do not hard code max auth ticket len
We hard code cephx auth ticket buffer size to 256 bytes. This isn't
enough for any moderate setups and, in case tickets themselves are not
encrypted, leads to buffer overflows (ceph_x_decrypt() errors out, but
ceph_decode_copy() doesn't - it's just a memcpy() wrapper). Since the
buffer is allocated dynamically anyway, allocated it a bit later, at
the point where we know how much is going to be needed.
Fixes: http://tracker.ceph.com/issues/8979
Cc: [email protected]
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]> | c27a3e4d667fdcad3db7b104f75659478e0c68d8 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ceph_x_verify_authorizer_reply | ceph_x_verify_authorizer_reply( struct ceph_auth_client * ac , struct ceph_authorizer * a , size_t len) | ['ac', 'a', 'len'] | static int ceph_x_verify_authorizer_reply(struct ceph_auth_client *ac,
struct ceph_authorizer *a, size_t len)
{
struct ceph_x_authorizer *au = (void *)a;
struct ceph_x_ticket_handler *th;
int ret = 0;
struct ceph_x_authorize_reply reply;
void *p = au->reply_buf;
void *end = p + sizeof(au->reply_buf);
th = get_ticket_handler(ac, au->service);
if (IS_ERR(th))
return PTR_ERR(th);
ret = ceph_x_decrypt(&th->session_key, &p, end, &reply, sizeof(reply));
if (ret < 0)
return ret;
if (ret != sizeof(reply))
return -EPERM;
if (au->nonce + 1 != le64_to_cpu(reply.nonce_plus_one))
ret = -EPERM;
else
ret = 0;
dout("verify_authorizer_reply nonce %llx got %llx ret %d\n",
au->nonce, le64_to_cpu(reply.nonce_plus_one), ret);
return ret;
} | 178 | True | 1 |
||
CVE-2014-6416 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://tracker.ceph.com/issues/8979', 'name': 'http://tracker.ceph.com/issues/8979', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142060', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142060', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2014/09/15/7', 'name': '[oss-security] 20140915 Re: CVE Request: libceph auth token overflow / Linux kernel', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://www.ubuntu.com/usn/USN-2377-1', 'name': 'USN-2377-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2376-1', 'name': 'USN-2376-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2379-1', 'name': 'USN-2379-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2378-1', 'name': 'USN-2378-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/69805', 'name': '69805', 'refsource': 'BID', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-119'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.16.2', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Buffer overflow in net/ceph/auth_x.c in Ceph, as used in the Linux kernel before 3.16.3, allows remote attackers to cause a denial of service (memory corruption and panic) or possibly have unspecified other impact via a long unencrypted auth ticket.'}] | 2015-04-30T02:00Z | 2014-09-28T10:55Z | Improper Restriction of Operations within the Bounds of a Memory Buffer | The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. |
Certain languages allow direct addressing of memory locations and do not automatically ensure that these locations are valid for the memory buffer that is being referenced. This can cause read or write operations to be performed on memory locations that may be associated with other variables, data structures, or internal program data.
As a result, an attacker may be able to execute arbitrary code, alter the intended control flow, read sensitive information, or cause the system to crash.
| https://cwe.mitre.org/data/definitions/119.html | 0 | Ilya Dryomov | 2014-09-09 19:39:15+04:00 | libceph: do not hard code max auth ticket len
We hard code cephx auth ticket buffer size to 256 bytes. This isn't
enough for any moderate setups and, in case tickets themselves are not
encrypted, leads to buffer overflows (ceph_x_decrypt() errors out, but
ceph_decode_copy() doesn't - it's just a memcpy() wrapper). Since the
buffer is allocated dynamically anyway, allocated it a bit later, at
the point where we know how much is going to be needed.
Fixes: http://tracker.ceph.com/issues/8979
Cc: [email protected]
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]> | c27a3e4d667fdcad3db7b104f75659478e0c68d8 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | process_one_ticket | process_one_ticket( struct ceph_auth_client * ac , struct ceph_crypto_key * secret , void ** p , void * end , void * dbuf , void * ticket_buf) | ['ac', 'secret', 'p', 'end', 'dbuf', 'ticket_buf'] | static int process_one_ticket(struct ceph_auth_client *ac,
struct ceph_crypto_key *secret,
void **p, void *end,
void *dbuf, void *ticket_buf)
{
struct ceph_x_info *xi = ac->private;
int type;
u8 tkt_struct_v, blob_struct_v;
struct ceph_x_ticket_handler *th;
void *dp, *dend;
int dlen;
char is_enc;
struct timespec validity;
struct ceph_crypto_key old_key;
void *tp, *tpend;
struct ceph_timespec new_validity;
struct ceph_crypto_key new_session_key;
struct ceph_buffer *new_ticket_blob;
unsigned long new_expires, new_renew_after;
u64 new_secret_id;
int ret;
ceph_decode_need(p, end, sizeof(u32) + 1, bad);
type = ceph_decode_32(p);
dout(" ticket type %d %s\n", type, ceph_entity_type_name(type));
tkt_struct_v = ceph_decode_8(p);
if (tkt_struct_v != 1)
goto bad;
th = get_ticket_handler(ac, type);
if (IS_ERR(th)) {
ret = PTR_ERR(th);
goto out;
}
/* blob for me */
dlen = ceph_x_decrypt(secret, p, end, dbuf,
TEMP_TICKET_BUF_LEN);
if (dlen <= 0) {
ret = dlen;
goto out;
}
dout(" decrypted %d bytes\n", dlen);
dp = dbuf;
dend = dp + dlen;
tkt_struct_v = ceph_decode_8(&dp);
if (tkt_struct_v != 1)
goto bad;
memcpy(&old_key, &th->session_key, sizeof(old_key));
ret = ceph_crypto_key_decode(&new_session_key, &dp, dend);
if (ret)
goto out;
ceph_decode_copy(&dp, &new_validity, sizeof(new_validity));
ceph_decode_timespec(&validity, &new_validity);
new_expires = get_seconds() + validity.tv_sec;
new_renew_after = new_expires - (validity.tv_sec / 4);
dout(" expires=%lu renew_after=%lu\n", new_expires,
new_renew_after);
/* ticket blob for service */
ceph_decode_8_safe(p, end, is_enc, bad);
tp = ticket_buf;
if (is_enc) {
/* encrypted */
dout(" encrypted ticket\n");
dlen = ceph_x_decrypt(&old_key, p, end, ticket_buf,
TEMP_TICKET_BUF_LEN);
if (dlen < 0) {
ret = dlen;
goto out;
}
dlen = ceph_decode_32(&tp);
} else {
/* unencrypted */
ceph_decode_32_safe(p, end, dlen, bad);
ceph_decode_need(p, end, dlen, bad);
ceph_decode_copy(p, ticket_buf, dlen);
}
tpend = tp + dlen;
dout(" ticket blob is %d bytes\n", dlen);
ceph_decode_need(&tp, tpend, 1 + sizeof(u64), bad);
blob_struct_v = ceph_decode_8(&tp);
new_secret_id = ceph_decode_64(&tp);
ret = ceph_decode_buffer(&new_ticket_blob, &tp, tpend);
if (ret)
goto out;
/* all is well, update our ticket */
ceph_crypto_key_destroy(&th->session_key);
if (th->ticket_blob)
ceph_buffer_put(th->ticket_blob);
th->session_key = new_session_key;
th->ticket_blob = new_ticket_blob;
th->validity = new_validity;
th->secret_id = new_secret_id;
th->expires = new_expires;
th->renew_after = new_renew_after;
dout(" got ticket service %d (%s) secret_id %lld len %d\n",
type, ceph_entity_type_name(type), th->secret_id,
(int)th->ticket_blob->vec.iov_len);
xi->have_keys |= th->service;
out:
return ret;
bad:
ret = -EINVAL;
goto out;
} | 610 | True | 1 |
|
CVE-2014-6417 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2014/09/15/7', 'name': '[oss-security] 20140915 Re: CVE Request: libceph auth token overflow / Linux kernel', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142072', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142072', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://tracker.ceph.com/issues/9560', 'name': 'http://tracker.ceph.com/issues/9560', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://tracker.ceph.com/issues/8979', 'name': 'http://tracker.ceph.com/issues/8979', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://www.ubuntu.com/usn/USN-2377-1', 'name': 'USN-2377-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2376-1', 'name': 'USN-2376-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2379-1', 'name': 'USN-2379-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2378-1', 'name': 'USN-2378-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.16.2', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'net/ceph/auth_x.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly consider the possibility of kmalloc failure, which allows remote attackers to cause a denial of service (system crash) or possibly have unspecified other impact via a long unencrypted auth ticket.'}] | 2014-10-24T07:28Z | 2014-09-28T10:55Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Ilya Dryomov | 2014-09-09 19:39:15+04:00 | libceph: do not hard code max auth ticket len
We hard code cephx auth ticket buffer size to 256 bytes. This isn't
enough for any moderate setups and, in case tickets themselves are not
encrypted, leads to buffer overflows (ceph_x_decrypt() errors out, but
ceph_decode_copy() doesn't - it's just a memcpy() wrapper). Since the
buffer is allocated dynamically anyway, allocated it a bit later, at
the point where we know how much is going to be needed.
Fixes: http://tracker.ceph.com/issues/8979
Cc: [email protected]
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]> | c27a3e4d667fdcad3db7b104f75659478e0c68d8 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | process_one_ticket | process_one_ticket( struct ceph_auth_client * ac , struct ceph_crypto_key * secret , void ** p , void * end , void * dbuf , void * ticket_buf) | ['ac', 'secret', 'p', 'end', 'dbuf', 'ticket_buf'] | static int process_one_ticket(struct ceph_auth_client *ac,
struct ceph_crypto_key *secret,
void **p, void *end,
void *dbuf, void *ticket_buf)
{
struct ceph_x_info *xi = ac->private;
int type;
u8 tkt_struct_v, blob_struct_v;
struct ceph_x_ticket_handler *th;
void *dp, *dend;
int dlen;
char is_enc;
struct timespec validity;
struct ceph_crypto_key old_key;
void *tp, *tpend;
struct ceph_timespec new_validity;
struct ceph_crypto_key new_session_key;
struct ceph_buffer *new_ticket_blob;
unsigned long new_expires, new_renew_after;
u64 new_secret_id;
int ret;
ceph_decode_need(p, end, sizeof(u32) + 1, bad);
type = ceph_decode_32(p);
dout(" ticket type %d %s\n", type, ceph_entity_type_name(type));
tkt_struct_v = ceph_decode_8(p);
if (tkt_struct_v != 1)
goto bad;
th = get_ticket_handler(ac, type);
if (IS_ERR(th)) {
ret = PTR_ERR(th);
goto out;
}
/* blob for me */
dlen = ceph_x_decrypt(secret, p, end, dbuf,
TEMP_TICKET_BUF_LEN);
if (dlen <= 0) {
ret = dlen;
goto out;
}
dout(" decrypted %d bytes\n", dlen);
dp = dbuf;
dend = dp + dlen;
tkt_struct_v = ceph_decode_8(&dp);
if (tkt_struct_v != 1)
goto bad;
memcpy(&old_key, &th->session_key, sizeof(old_key));
ret = ceph_crypto_key_decode(&new_session_key, &dp, dend);
if (ret)
goto out;
ceph_decode_copy(&dp, &new_validity, sizeof(new_validity));
ceph_decode_timespec(&validity, &new_validity);
new_expires = get_seconds() + validity.tv_sec;
new_renew_after = new_expires - (validity.tv_sec / 4);
dout(" expires=%lu renew_after=%lu\n", new_expires,
new_renew_after);
/* ticket blob for service */
ceph_decode_8_safe(p, end, is_enc, bad);
tp = ticket_buf;
if (is_enc) {
/* encrypted */
dout(" encrypted ticket\n");
dlen = ceph_x_decrypt(&old_key, p, end, ticket_buf,
TEMP_TICKET_BUF_LEN);
if (dlen < 0) {
ret = dlen;
goto out;
}
dlen = ceph_decode_32(&tp);
} else {
/* unencrypted */
ceph_decode_32_safe(p, end, dlen, bad);
ceph_decode_need(p, end, dlen, bad);
ceph_decode_copy(p, ticket_buf, dlen);
}
tpend = tp + dlen;
dout(" ticket blob is %d bytes\n", dlen);
ceph_decode_need(&tp, tpend, 1 + sizeof(u64), bad);
blob_struct_v = ceph_decode_8(&tp);
new_secret_id = ceph_decode_64(&tp);
ret = ceph_decode_buffer(&new_ticket_blob, &tp, tpend);
if (ret)
goto out;
/* all is well, update our ticket */
ceph_crypto_key_destroy(&th->session_key);
if (th->ticket_blob)
ceph_buffer_put(th->ticket_blob);
th->session_key = new_session_key;
th->ticket_blob = new_ticket_blob;
th->validity = new_validity;
th->secret_id = new_secret_id;
th->expires = new_expires;
th->renew_after = new_renew_after;
dout(" got ticket service %d (%s) secret_id %lld len %d\n",
type, ceph_entity_type_name(type), th->secret_id,
(int)th->ticket_blob->vec.iov_len);
xi->have_keys |= th->service;
out:
return ret;
bad:
ret = -EINVAL;
goto out;
} | 610 | True | 1 |
||
CVE-2014-6418 | False | False | False | False | AV:N/AC:M/Au:N/C:N/I:N/A:C | NETWORK | MEDIUM | NONE | NONE | NONE | COMPLETE | 7.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2014/09/15/7', 'name': '[oss-security] 20140915 Re: CVE Request: libceph auth token overflow / Linux kernel', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://tracker.ceph.com/issues/9561', 'name': 'http://tracker.ceph.com/issues/9561', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Vendor Advisory']}, {'url': 'http://tracker.ceph.com/issues/8979', 'name': 'http://tracker.ceph.com/issues/8979', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'name': 'https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142073', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1142073', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2377-1', 'name': 'USN-2377-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2376-1', 'name': 'USN-2376-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2379-1', 'name': 'USN-2379-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2378-1', 'name': 'USN-2378-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.16.2', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'net/ceph/auth_x.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly validate auth replies, which allows remote attackers to cause a denial of service (system crash) or possibly have unspecified other impact via crafted data from the IP address of a Ceph Monitor.'}] | 2014-10-24T07:28Z | 2014-09-28T10:55Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Ilya Dryomov | 2014-09-09 19:39:15+04:00 | libceph: do not hard code max auth ticket len
We hard code cephx auth ticket buffer size to 256 bytes. This isn't
enough for any moderate setups and, in case tickets themselves are not
encrypted, leads to buffer overflows (ceph_x_decrypt() errors out, but
ceph_decode_copy() doesn't - it's just a memcpy() wrapper). Since the
buffer is allocated dynamically anyway, allocated it a bit later, at
the point where we know how much is going to be needed.
Fixes: http://tracker.ceph.com/issues/8979
Cc: [email protected]
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]> | c27a3e4d667fdcad3db7b104f75659478e0c68d8 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | process_one_ticket | process_one_ticket( struct ceph_auth_client * ac , struct ceph_crypto_key * secret , void ** p , void * end , void * dbuf , void * ticket_buf) | ['ac', 'secret', 'p', 'end', 'dbuf', 'ticket_buf'] | static int process_one_ticket(struct ceph_auth_client *ac,
struct ceph_crypto_key *secret,
void **p, void *end,
void *dbuf, void *ticket_buf)
{
struct ceph_x_info *xi = ac->private;
int type;
u8 tkt_struct_v, blob_struct_v;
struct ceph_x_ticket_handler *th;
void *dp, *dend;
int dlen;
char is_enc;
struct timespec validity;
struct ceph_crypto_key old_key;
void *tp, *tpend;
struct ceph_timespec new_validity;
struct ceph_crypto_key new_session_key;
struct ceph_buffer *new_ticket_blob;
unsigned long new_expires, new_renew_after;
u64 new_secret_id;
int ret;
ceph_decode_need(p, end, sizeof(u32) + 1, bad);
type = ceph_decode_32(p);
dout(" ticket type %d %s\n", type, ceph_entity_type_name(type));
tkt_struct_v = ceph_decode_8(p);
if (tkt_struct_v != 1)
goto bad;
th = get_ticket_handler(ac, type);
if (IS_ERR(th)) {
ret = PTR_ERR(th);
goto out;
}
/* blob for me */
dlen = ceph_x_decrypt(secret, p, end, dbuf,
TEMP_TICKET_BUF_LEN);
if (dlen <= 0) {
ret = dlen;
goto out;
}
dout(" decrypted %d bytes\n", dlen);
dp = dbuf;
dend = dp + dlen;
tkt_struct_v = ceph_decode_8(&dp);
if (tkt_struct_v != 1)
goto bad;
memcpy(&old_key, &th->session_key, sizeof(old_key));
ret = ceph_crypto_key_decode(&new_session_key, &dp, dend);
if (ret)
goto out;
ceph_decode_copy(&dp, &new_validity, sizeof(new_validity));
ceph_decode_timespec(&validity, &new_validity);
new_expires = get_seconds() + validity.tv_sec;
new_renew_after = new_expires - (validity.tv_sec / 4);
dout(" expires=%lu renew_after=%lu\n", new_expires,
new_renew_after);
/* ticket blob for service */
ceph_decode_8_safe(p, end, is_enc, bad);
tp = ticket_buf;
if (is_enc) {
/* encrypted */
dout(" encrypted ticket\n");
dlen = ceph_x_decrypt(&old_key, p, end, ticket_buf,
TEMP_TICKET_BUF_LEN);
if (dlen < 0) {
ret = dlen;
goto out;
}
dlen = ceph_decode_32(&tp);
} else {
/* unencrypted */
ceph_decode_32_safe(p, end, dlen, bad);
ceph_decode_need(p, end, dlen, bad);
ceph_decode_copy(p, ticket_buf, dlen);
}
tpend = tp + dlen;
dout(" ticket blob is %d bytes\n", dlen);
ceph_decode_need(&tp, tpend, 1 + sizeof(u64), bad);
blob_struct_v = ceph_decode_8(&tp);
new_secret_id = ceph_decode_64(&tp);
ret = ceph_decode_buffer(&new_ticket_blob, &tp, tpend);
if (ret)
goto out;
/* all is well, update our ticket */
ceph_crypto_key_destroy(&th->session_key);
if (th->ticket_blob)
ceph_buffer_put(th->ticket_blob);
th->session_key = new_session_key;
th->ticket_blob = new_ticket_blob;
th->validity = new_validity;
th->secret_id = new_secret_id;
th->expires = new_expires;
th->renew_after = new_renew_after;
dout(" got ticket service %d (%s) secret_id %lld len %d\n",
type, ceph_entity_type_name(type), th->secret_id,
(int)th->ticket_blob->vec.iov_len);
xi->have_keys |= th->service;
out:
return ret;
bad:
ret = -EINVAL;
goto out;
} | 610 | True | 1 |
||
CVE-2014-3631 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://github.com/torvalds/linux/commit/95389b08d93d5c06ec63ab49bd732b0069b7c35e', 'name': 'https://github.com/torvalds/linux/commit/95389b08d93d5c06ec63ab49bd732b0069b7c35e', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1140325', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1140325', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=95389b08d93d5c06ec63ab49bd732b0069b7c35e', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=95389b08d93d5c06ec63ab49bd732b0069b7c35e', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://www.ubuntu.com/usn/USN-2379-1', 'name': 'USN-2379-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2378-1', 'name': 'USN-2378-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://osvdb.org/show/osvdb/111298', 'name': '111298', 'refsource': 'OSVDB', 'tags': []}, {'url': 'http://www.exploit-db.com/exploits/36268', 'name': '36268', 'refsource': 'EXPLOIT-DB', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/70095', 'name': '70095', 'refsource': 'BID', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.16.2', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.16.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The assoc_array_gc function in the associative-array implementation in lib/assoc_array.c in the Linux kernel before 3.16.3 does not properly implement garbage collection, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via multiple "keyctl newring" operations followed by a "keyctl timeout" operation.'}] | 2015-03-18T02:01Z | 2014-09-28T10:55Z | Other | NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | David Howells | 2014-09-10 22:22:00+01:00 | KEYS: Fix termination condition in assoc array garbage collection
This fixes CVE-2014-3631.
It is possible for an associative array to end up with a shortcut node at the
root of the tree if there are more than fan-out leaves in the tree, but they
all crowd into the same slot in the lowest level (ie. they all have the same
first nibble of their index keys).
When assoc_array_gc() returns back up the tree after scanning some leaves, it
can fall off of the root and crash because it assumes that the back pointer
from a shortcut (after label ascend_old_tree) must point to a normal node -
which isn't true of a shortcut node at the root.
Should we find we're ascending rootwards over a shortcut, we should check to
see if the backpointer is zero - and if it is, we have completed the scan.
This particular bug cannot occur if the root node is not a shortcut - ie. if
you have fewer than 17 keys in a keyring or if you have at least two keys that
sit into separate slots (eg. a keyring and a non keyring).
This can be reproduced by:
ring=`keyctl newring bar @s`
for ((i=1; i<=18; i++)); do last_key=`keyctl newring foo$i $ring`; done
keyctl timeout $last_key 2
Doing this:
echo 3 >/proc/sys/kernel/keys/gc_delay
first will speed things up.
If we do fall off of the top of the tree, we get the following oops:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
IP: [<ffffffff8136cea7>] assoc_array_gc+0x2f7/0x540
PGD dae15067 PUD cfc24067 PMD 0
Oops: 0000 [#1] SMP
Modules linked in: xt_nat xt_mark nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_ni
CPU: 0 PID: 26011 Comm: kworker/0:1 Not tainted 3.14.9-200.fc20.x86_64 #1
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
Workqueue: events key_garbage_collector
task: ffff8800918bd580 ti: ffff8800aac14000 task.ti: ffff8800aac14000
RIP: 0010:[<ffffffff8136cea7>] [<ffffffff8136cea7>] assoc_array_gc+0x2f7/0x540
RSP: 0018:ffff8800aac15d40 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8800aaecacc0
RDX: ffff8800daecf440 RSI: 0000000000000001 RDI: ffff8800aadc2bc0
RBP: ffff8800aac15da8 R08: 0000000000000001 R09: 0000000000000003
R10: ffffffff8136ccc7 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000070 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000018 CR3: 00000000db10d000 CR4: 00000000000006f0
Stack:
ffff8800aac15d50 0000000000000011 ffff8800aac15db8 ffffffff812e2a70
ffff880091a00600 0000000000000000 ffff8800aadc2bc3 00000000cd42c987
ffff88003702df20 ffff88003702dfa0 0000000053b65c09 ffff8800aac15fd8
Call Trace:
[<ffffffff812e2a70>] ? keyring_detect_cycle_iterator+0x30/0x30
[<ffffffff812e3e75>] keyring_gc+0x75/0x80
[<ffffffff812e1424>] key_garbage_collector+0x154/0x3c0
[<ffffffff810a67b6>] process_one_work+0x176/0x430
[<ffffffff810a744b>] worker_thread+0x11b/0x3a0
[<ffffffff810a7330>] ? rescuer_thread+0x3b0/0x3b0
[<ffffffff810ae1a8>] kthread+0xd8/0xf0
[<ffffffff810ae0d0>] ? insert_kthread_work+0x40/0x40
[<ffffffff816ffb7c>] ret_from_fork+0x7c/0xb0
[<ffffffff810ae0d0>] ? insert_kthread_work+0x40/0x40
Code: 08 4c 8b 22 0f 84 bf 00 00 00 41 83 c7 01 49 83 e4 fc 41 83 ff 0f 4c 89 65 c0 0f 8f 5a fe ff ff 48 8b 45 c0 4d 63 cf 49 83 c1 02 <4e> 8b 34 c8 4d 85 f6 0f 84 be 00 00 00 41 f6 c6 01 0f 84 92
RIP [<ffffffff8136cea7>] assoc_array_gc+0x2f7/0x540
RSP <ffff8800aac15d40>
CR2: 0000000000000018
---[ end trace 1129028a088c0cbd ]---
Signed-off-by: David Howells <[email protected]>
Acked-by: Don Zickus <[email protected]>
Signed-off-by: James Morris <[email protected]> | 95389b08d93d5c06ec63ab49bd732b0069b7c35e | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | assoc_array_gc | assoc_array_gc( struct assoc_array * array , const struct assoc_array_ops * ops , bool(*iterator)(void*object,void*iterator_data) , void * iterator_data) | ['array', 'ops', 'bool', 'iterator_data'] | int assoc_array_gc(struct assoc_array *array,
const struct assoc_array_ops *ops,
bool (*iterator)(void *object, void *iterator_data),
void *iterator_data)
{
struct assoc_array_shortcut *shortcut, *new_s;
struct assoc_array_node *node, *new_n;
struct assoc_array_edit *edit;
struct assoc_array_ptr *cursor, *ptr;
struct assoc_array_ptr *new_root, *new_parent, **new_ptr_pp;
unsigned long nr_leaves_on_tree;
int keylen, slot, nr_free, next_slot, i;
pr_devel("-->%s()\n", __func__);
if (!array->root)
return 0;
edit = kzalloc(sizeof(struct assoc_array_edit), GFP_KERNEL);
if (!edit)
return -ENOMEM;
edit->array = array;
edit->ops = ops;
edit->ops_for_excised_subtree = ops;
edit->set[0].ptr = &array->root;
edit->excised_subtree = array->root;
new_root = new_parent = NULL;
new_ptr_pp = &new_root;
cursor = array->root;
descend:
/* If this point is a shortcut, then we need to duplicate it and
* advance the target cursor.
*/
if (assoc_array_ptr_is_shortcut(cursor)) {
shortcut = assoc_array_ptr_to_shortcut(cursor);
keylen = round_up(shortcut->skip_to_level, ASSOC_ARRAY_KEY_CHUNK_SIZE);
keylen >>= ASSOC_ARRAY_KEY_CHUNK_SHIFT;
new_s = kmalloc(sizeof(struct assoc_array_shortcut) +
keylen * sizeof(unsigned long), GFP_KERNEL);
if (!new_s)
goto enomem;
pr_devel("dup shortcut %p -> %p\n", shortcut, new_s);
memcpy(new_s, shortcut, (sizeof(struct assoc_array_shortcut) +
keylen * sizeof(unsigned long)));
new_s->back_pointer = new_parent;
new_s->parent_slot = shortcut->parent_slot;
*new_ptr_pp = new_parent = assoc_array_shortcut_to_ptr(new_s);
new_ptr_pp = &new_s->next_node;
cursor = shortcut->next_node;
}
/* Duplicate the node at this position */
node = assoc_array_ptr_to_node(cursor);
new_n = kzalloc(sizeof(struct assoc_array_node), GFP_KERNEL);
if (!new_n)
goto enomem;
pr_devel("dup node %p -> %p\n", node, new_n);
new_n->back_pointer = new_parent;
new_n->parent_slot = node->parent_slot;
*new_ptr_pp = new_parent = assoc_array_node_to_ptr(new_n);
new_ptr_pp = NULL;
slot = 0;
continue_node:
/* Filter across any leaves and gc any subtrees */
for (; slot < ASSOC_ARRAY_FAN_OUT; slot++) {
ptr = node->slots[slot];
if (!ptr)
continue;
if (assoc_array_ptr_is_leaf(ptr)) {
if (iterator(assoc_array_ptr_to_leaf(ptr),
iterator_data))
/* The iterator will have done any reference
* counting on the object for us.
*/
new_n->slots[slot] = ptr;
continue;
}
new_ptr_pp = &new_n->slots[slot];
cursor = ptr;
goto descend;
}
pr_devel("-- compress node %p --\n", new_n);
/* Count up the number of empty slots in this node and work out the
* subtree leaf count.
*/
new_n->nr_leaves_on_branch = 0;
nr_free = 0;
for (slot = 0; slot < ASSOC_ARRAY_FAN_OUT; slot++) {
ptr = new_n->slots[slot];
if (!ptr)
nr_free++;
else if (assoc_array_ptr_is_leaf(ptr))
new_n->nr_leaves_on_branch++;
}
pr_devel("free=%d, leaves=%lu\n", nr_free, new_n->nr_leaves_on_branch);
/* See what we can fold in */
next_slot = 0;
for (slot = 0; slot < ASSOC_ARRAY_FAN_OUT; slot++) {
struct assoc_array_shortcut *s;
struct assoc_array_node *child;
ptr = new_n->slots[slot];
if (!ptr || assoc_array_ptr_is_leaf(ptr))
continue;
s = NULL;
if (assoc_array_ptr_is_shortcut(ptr)) {
s = assoc_array_ptr_to_shortcut(ptr);
ptr = s->next_node;
}
child = assoc_array_ptr_to_node(ptr);
new_n->nr_leaves_on_branch += child->nr_leaves_on_branch;
if (child->nr_leaves_on_branch <= nr_free + 1) {
/* Fold the child node into this one */
pr_devel("[%d] fold node %lu/%d [nx %d]\n",
slot, child->nr_leaves_on_branch, nr_free + 1,
next_slot);
/* We would already have reaped an intervening shortcut
* on the way back up the tree.
*/
BUG_ON(s);
new_n->slots[slot] = NULL;
nr_free++;
if (slot < next_slot)
next_slot = slot;
for (i = 0; i < ASSOC_ARRAY_FAN_OUT; i++) {
struct assoc_array_ptr *p = child->slots[i];
if (!p)
continue;
BUG_ON(assoc_array_ptr_is_meta(p));
while (new_n->slots[next_slot])
next_slot++;
BUG_ON(next_slot >= ASSOC_ARRAY_FAN_OUT);
new_n->slots[next_slot++] = p;
nr_free--;
}
kfree(child);
} else {
pr_devel("[%d] retain node %lu/%d [nx %d]\n",
slot, child->nr_leaves_on_branch, nr_free + 1,
next_slot);
}
}
pr_devel("after: %lu\n", new_n->nr_leaves_on_branch);
nr_leaves_on_tree = new_n->nr_leaves_on_branch;
/* Excise this node if it is singly occupied by a shortcut */
if (nr_free == ASSOC_ARRAY_FAN_OUT - 1) {
for (slot = 0; slot < ASSOC_ARRAY_FAN_OUT; slot++)
if ((ptr = new_n->slots[slot]))
break;
if (assoc_array_ptr_is_meta(ptr) &&
assoc_array_ptr_is_shortcut(ptr)) {
pr_devel("excise node %p with 1 shortcut\n", new_n);
new_s = assoc_array_ptr_to_shortcut(ptr);
new_parent = new_n->back_pointer;
slot = new_n->parent_slot;
kfree(new_n);
if (!new_parent) {
new_s->back_pointer = NULL;
new_s->parent_slot = 0;
new_root = ptr;
goto gc_complete;
}
if (assoc_array_ptr_is_shortcut(new_parent)) {
/* We can discard any preceding shortcut also */
struct assoc_array_shortcut *s =
assoc_array_ptr_to_shortcut(new_parent);
pr_devel("excise preceding shortcut\n");
new_parent = new_s->back_pointer = s->back_pointer;
slot = new_s->parent_slot = s->parent_slot;
kfree(s);
if (!new_parent) {
new_s->back_pointer = NULL;
new_s->parent_slot = 0;
new_root = ptr;
goto gc_complete;
}
}
new_s->back_pointer = new_parent;
new_s->parent_slot = slot;
new_n = assoc_array_ptr_to_node(new_parent);
new_n->slots[slot] = ptr;
goto ascend_old_tree;
}
}
/* Excise any shortcuts we might encounter that point to nodes that
* only contain leaves.
*/
ptr = new_n->back_pointer;
if (!ptr)
goto gc_complete;
if (assoc_array_ptr_is_shortcut(ptr)) {
new_s = assoc_array_ptr_to_shortcut(ptr);
new_parent = new_s->back_pointer;
slot = new_s->parent_slot;
if (new_n->nr_leaves_on_branch <= ASSOC_ARRAY_FAN_OUT) {
struct assoc_array_node *n;
pr_devel("excise shortcut\n");
new_n->back_pointer = new_parent;
new_n->parent_slot = slot;
kfree(new_s);
if (!new_parent) {
new_root = assoc_array_node_to_ptr(new_n);
goto gc_complete;
}
n = assoc_array_ptr_to_node(new_parent);
n->slots[slot] = assoc_array_node_to_ptr(new_n);
}
} else {
new_parent = ptr;
}
new_n = assoc_array_ptr_to_node(new_parent);
ascend_old_tree:
ptr = node->back_pointer;
if (assoc_array_ptr_is_shortcut(ptr)) {
shortcut = assoc_array_ptr_to_shortcut(ptr);
slot = shortcut->parent_slot;
cursor = shortcut->back_pointer;
} else {
slot = node->parent_slot;
cursor = ptr;
}
BUG_ON(!ptr);
node = assoc_array_ptr_to_node(cursor);
slot++;
goto continue_node;
gc_complete:
edit->set[0].to = new_root;
assoc_array_apply_edit(edit);
array->nr_leaves_on_tree = nr_leaves_on_tree;
return 0;
enomem:
pr_devel("enomem\n");
assoc_array_destroy_subtree(new_root, edit->ops);
kfree(edit);
return -ENOMEM;
} | 1262 | True | 1 |
|
CVE-2017-2647 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/97258', 'name': '97258', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2444', 'name': 'RHSA-2017:2444', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2437', 'name': 'RHSA-2017:2437', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-2/', 'name': 'USN-3849-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-1/', 'name': 'USN-3849-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.'}] | 2019-01-15T11:29Z | 2017-03-31T04:59Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | David Howells | 2014-09-16 17:36:06+01:00 | KEYS: Remove key_type::match in favour of overriding default by match_preparse
A previous patch added a ->match_preparse() method to the key type. This is
allowed to override the function called by the iteration algorithm.
Therefore, we can just set a default that simply checks for an exact match of
the key description with the original criterion data and allow match_preparse
to override it as needed.
The key_type::match op is then redundant and can be removed, as can the
user_match() function.
Signed-off-by: David Howells <[email protected]>
Acked-by: Vivek Goyal <[email protected]> | c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | asymmetric_key_match | asymmetric_key_match( const struct key * key , const struct key_match_data * match_data) | ['key', 'match_data'] | static int asymmetric_key_match(const struct key *key,
const struct key_match_data *match_data)
{
const struct asymmetric_key_subtype *subtype = asymmetric_key_subtype(key);
const char *description = match_data->raw_data;
const char *spec = description;
const char *id;
ptrdiff_t speclen;
if (!subtype || !spec || !*spec)
return 0;
/* See if the full key description matches as is */
if (key->description && strcmp(key->description, description) == 0)
return 1;
/* All tests from here on break the criterion description into a
* specifier, a colon and then an identifier.
*/
id = strchr(spec, ':');
if (!id)
return 0;
speclen = id - spec;
id++;
if (speclen == 2 && memcmp(spec, "id", 2) == 0)
return asymmetric_keyid_match(asymmetric_key_id(key), id);
if (speclen == subtype->name_len &&
memcmp(spec, subtype->name, speclen) == 0)
return 1;
return 0;
} | 167 | True | 1 |
|
CVE-2017-2647 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/97258', 'name': '97258', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2444', 'name': 'RHSA-2017:2444', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2437', 'name': 'RHSA-2017:2437', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-2/', 'name': 'USN-3849-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-1/', 'name': 'USN-3849-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.'}] | 2019-01-15T11:29Z | 2017-03-31T04:59Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | David Howells | 2014-09-16 17:36:06+01:00 | KEYS: Remove key_type::match in favour of overriding default by match_preparse
A previous patch added a ->match_preparse() method to the key type. This is
allowed to override the function called by the iteration algorithm.
Therefore, we can just set a default that simply checks for an exact match of
the key description with the original criterion data and allow match_preparse
to override it as needed.
The key_type::match op is then redundant and can be removed, as can the
user_match() function.
Signed-off-by: David Howells <[email protected]>
Acked-by: Vivek Goyal <[email protected]> | c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | dns_resolver_match | dns_resolver_match( const struct key * key , const struct key_match_data * match_data) | ['key', 'match_data'] | dns_resolver_match(const struct key *key,
const struct key_match_data *match_data)
{
int slen, dlen, ret = 0;
const char *src = key->description, *dsp = match_data->raw_data;
kenter("%s,%s", src, dsp);
if (!src || !dsp)
goto no_match;
if (strcasecmp(src, dsp) == 0)
goto matched;
slen = strlen(src);
dlen = strlen(dsp);
if (slen <= 0 || dlen <= 0)
goto no_match;
if (src[slen - 1] == '.')
slen--;
if (dsp[dlen - 1] == '.')
dlen--;
if (slen != dlen || strncasecmp(src, dsp, slen) != 0)
goto no_match;
matched:
ret = 1;
no_match:
kleave(" = %d", ret);
return ret;
} | 168 | True | 1 |
|
CVE-2017-2647 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/97258', 'name': '97258', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2444', 'name': 'RHSA-2017:2444', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2437', 'name': 'RHSA-2017:2437', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-2/', 'name': 'USN-3849-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-1/', 'name': 'USN-3849-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.'}] | 2019-01-15T11:29Z | 2017-03-31T04:59Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | David Howells | 2014-09-16 17:36:06+01:00 | KEYS: Remove key_type::match in favour of overriding default by match_preparse
A previous patch added a ->match_preparse() method to the key type. This is
allowed to override the function called by the iteration algorithm.
Therefore, we can just set a default that simply checks for an exact match of
the key description with the original criterion data and allow match_preparse
to override it as needed.
The key_type::match op is then redundant and can be removed, as can the
user_match() function.
Signed-off-by: David Howells <[email protected]>
Acked-by: Vivek Goyal <[email protected]> | c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | key_create_or_update | key_create_or_update( key_ref_t keyring_ref , const char * type , const char * description , const void * payload , size_t plen , key_perm_t perm , unsigned long flags) | ['keyring_ref', 'type', 'description', 'payload', 'plen', 'perm', 'flags'] | key_ref_t key_create_or_update(key_ref_t keyring_ref,
const char *type,
const char *description,
const void *payload,
size_t plen,
key_perm_t perm,
unsigned long flags)
{
struct keyring_index_key index_key = {
.description = description,
};
struct key_preparsed_payload prep;
struct assoc_array_edit *edit;
const struct cred *cred = current_cred();
struct key *keyring, *key = NULL;
key_ref_t key_ref;
int ret;
/* look up the key type to see if it's one of the registered kernel
* types */
index_key.type = key_type_lookup(type);
if (IS_ERR(index_key.type)) {
key_ref = ERR_PTR(-ENODEV);
goto error;
}
key_ref = ERR_PTR(-EINVAL);
if (!index_key.type->match || !index_key.type->instantiate ||
(!index_key.description && !index_key.type->preparse))
goto error_put_type;
keyring = key_ref_to_ptr(keyring_ref);
key_check(keyring);
key_ref = ERR_PTR(-ENOTDIR);
if (keyring->type != &key_type_keyring)
goto error_put_type;
memset(&prep, 0, sizeof(prep));
prep.data = payload;
prep.datalen = plen;
prep.quotalen = index_key.type->def_datalen;
prep.trusted = flags & KEY_ALLOC_TRUSTED;
prep.expiry = TIME_T_MAX;
if (index_key.type->preparse) {
ret = index_key.type->preparse(&prep);
if (ret < 0) {
key_ref = ERR_PTR(ret);
goto error_free_prep;
}
if (!index_key.description)
index_key.description = prep.description;
key_ref = ERR_PTR(-EINVAL);
if (!index_key.description)
goto error_free_prep;
}
index_key.desc_len = strlen(index_key.description);
key_ref = ERR_PTR(-EPERM);
if (!prep.trusted && test_bit(KEY_FLAG_TRUSTED_ONLY, &keyring->flags))
goto error_free_prep;
flags |= prep.trusted ? KEY_ALLOC_TRUSTED : 0;
ret = __key_link_begin(keyring, &index_key, &edit);
if (ret < 0) {
key_ref = ERR_PTR(ret);
goto error_free_prep;
}
/* if we're going to allocate a new key, we're going to have
* to modify the keyring */
ret = key_permission(keyring_ref, KEY_NEED_WRITE);
if (ret < 0) {
key_ref = ERR_PTR(ret);
goto error_link_end;
}
/* if it's possible to update this type of key, search for an existing
* key of the same type and description in the destination keyring and
* update that instead if possible
*/
if (index_key.type->update) {
key_ref = find_key_to_update(keyring_ref, &index_key);
if (key_ref)
goto found_matching_key;
}
/* if the client doesn't provide, decide on the permissions we want */
if (perm == KEY_PERM_UNDEF) {
perm = KEY_POS_VIEW | KEY_POS_SEARCH | KEY_POS_LINK | KEY_POS_SETATTR;
perm |= KEY_USR_VIEW;
if (index_key.type->read)
perm |= KEY_POS_READ;
if (index_key.type == &key_type_keyring ||
index_key.type->update)
perm |= KEY_POS_WRITE;
}
/* allocate a new key */
key = key_alloc(index_key.type, index_key.description,
cred->fsuid, cred->fsgid, cred, perm, flags);
if (IS_ERR(key)) {
key_ref = ERR_CAST(key);
goto error_link_end;
}
/* instantiate it and link it into the target keyring */
ret = __key_instantiate_and_link(key, &prep, keyring, NULL, &edit);
if (ret < 0) {
key_put(key);
key_ref = ERR_PTR(ret);
goto error_link_end;
}
key_ref = make_key_ref(key, is_key_possessed(keyring_ref));
error_link_end:
__key_link_end(keyring, &index_key, edit);
error_free_prep:
if (index_key.type->preparse)
index_key.type->free_preparse(&prep);
error_put_type:
key_type_put(index_key.type);
error:
return key_ref;
found_matching_key:
/* we found a matching key, so we're going to try to update it
* - we can drop the locks first as we have the key pinned
*/
__key_link_end(keyring, &index_key, edit);
key_ref = __key_update(key_ref, &prep);
goto error_free_prep;
} | 661 | True | 1 |
|
CVE-2017-2647 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/97258', 'name': '97258', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2444', 'name': 'RHSA-2017:2444', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2437', 'name': 'RHSA-2017:2437', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-2/', 'name': 'USN-3849-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-1/', 'name': 'USN-3849-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.'}] | 2019-01-15T11:29Z | 2017-03-31T04:59Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | David Howells | 2014-09-16 17:36:06+01:00 | KEYS: Remove key_type::match in favour of overriding default by match_preparse
A previous patch added a ->match_preparse() method to the key type. This is
allowed to override the function called by the iteration algorithm.
Therefore, we can just set a default that simply checks for an exact match of
the key description with the original criterion data and allow match_preparse
to override it as needed.
The key_type::match op is then redundant and can be removed, as can the
user_match() function.
Signed-off-by: David Howells <[email protected]>
Acked-by: Vivek Goyal <[email protected]> | c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | keyring_search | keyring_search( key_ref_t keyring , struct key_type * type , const char * description) | ['keyring', 'type', 'description'] | key_ref_t keyring_search(key_ref_t keyring,
struct key_type *type,
const char *description)
{
struct keyring_search_context ctx = {
.index_key.type = type,
.index_key.description = description,
.cred = current_cred(),
.match_data.cmp = type->match,
.match_data.raw_data = description,
.match_data.lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT,
.flags = KEYRING_SEARCH_DO_STATE_CHECK,
};
key_ref_t key;
int ret;
if (!ctx.match_data.cmp)
return ERR_PTR(-ENOKEY);
if (type->match_preparse) {
ret = type->match_preparse(&ctx.match_data);
if (ret < 0)
return ERR_PTR(ret);
}
key = keyring_search_aux(keyring, &ctx);
if (type->match_free)
type->match_free(&ctx.match_data);
return key;
} | 156 | True | 1 |
|
CVE-2017-2647 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/97258', 'name': '97258', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2444', 'name': 'RHSA-2017:2444', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2437', 'name': 'RHSA-2017:2437', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-2/', 'name': 'USN-3849-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-1/', 'name': 'USN-3849-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.'}] | 2019-01-15T11:29Z | 2017-03-31T04:59Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | David Howells | 2014-09-16 17:36:06+01:00 | KEYS: Remove key_type::match in favour of overriding default by match_preparse
A previous patch added a ->match_preparse() method to the key type. This is
allowed to override the function called by the iteration algorithm.
Therefore, we can just set a default that simply checks for an exact match of
the key description with the original criterion data and allow match_preparse
to override it as needed.
The key_type::match op is then redundant and can be removed, as can the
user_match() function.
Signed-off-by: David Howells <[email protected]>
Acked-by: Vivek Goyal <[email protected]> | c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | request_key_and_link | request_key_and_link( struct key_type * type , const char * description , const void * callout_info , size_t callout_len , void * aux , struct key * dest_keyring , unsigned long flags) | ['type', 'description', 'callout_info', 'callout_len', 'aux', 'dest_keyring', 'flags'] | struct key *request_key_and_link(struct key_type *type,
const char *description,
const void *callout_info,
size_t callout_len,
void *aux,
struct key *dest_keyring,
unsigned long flags)
{
struct keyring_search_context ctx = {
.index_key.type = type,
.index_key.description = description,
.cred = current_cred(),
.match_data.cmp = type->match,
.match_data.raw_data = description,
.match_data.lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT,
};
struct key *key;
key_ref_t key_ref;
int ret;
kenter("%s,%s,%p,%zu,%p,%p,%lx",
ctx.index_key.type->name, ctx.index_key.description,
callout_info, callout_len, aux, dest_keyring, flags);
if (type->match_preparse) {
ret = type->match_preparse(&ctx.match_data);
if (ret < 0) {
key = ERR_PTR(ret);
goto error;
}
}
/* search all the process keyrings for a key */
key_ref = search_process_keyrings(&ctx);
if (!IS_ERR(key_ref)) {
key = key_ref_to_ptr(key_ref);
if (dest_keyring) {
construct_get_dest_keyring(&dest_keyring);
ret = key_link(dest_keyring, key);
key_put(dest_keyring);
if (ret < 0) {
key_put(key);
key = ERR_PTR(ret);
goto error_free;
}
}
} else if (PTR_ERR(key_ref) != -EAGAIN) {
key = ERR_CAST(key_ref);
} else {
/* the search failed, but the keyrings were searchable, so we
* should consult userspace if we can */
key = ERR_PTR(-ENOKEY);
if (!callout_info)
goto error_free;
key = construct_key_and_link(&ctx, callout_info, callout_len,
aux, dest_keyring, flags);
}
error_free:
if (type->match_free)
type->match_free(&ctx.match_data);
error:
kleave(" = %p", key);
return key;
} | 325 | True | 1 |
|
CVE-2017-2647 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/97258', 'name': '97258', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2444', 'name': 'RHSA-2017:2444', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2437', 'name': 'RHSA-2017:2437', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-2/', 'name': 'USN-3849-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-1/', 'name': 'USN-3849-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.'}] | 2019-01-15T11:29Z | 2017-03-31T04:59Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | David Howells | 2014-09-16 17:36:06+01:00 | KEYS: Remove key_type::match in favour of overriding default by match_preparse
A previous patch added a ->match_preparse() method to the key type. This is
allowed to override the function called by the iteration algorithm.
Therefore, we can just set a default that simply checks for an exact match of
the key description with the original criterion data and allow match_preparse
to override it as needed.
The key_type::match op is then redundant and can be removed, as can the
user_match() function.
Signed-off-by: David Howells <[email protected]>
Acked-by: Vivek Goyal <[email protected]> | c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | key_get_instantiation_authkey | key_get_instantiation_authkey( key_serial_t target_id) | ['target_id'] | struct key *key_get_instantiation_authkey(key_serial_t target_id)
{
char description[16];
struct keyring_search_context ctx = {
.index_key.type = &key_type_request_key_auth,
.index_key.description = description,
.cred = current_cred(),
.match_data.cmp = user_match,
.match_data.raw_data = description,
.match_data.lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT,
};
struct key *authkey;
key_ref_t authkey_ref;
sprintf(description, "%x", target_id);
authkey_ref = search_process_keyrings(&ctx);
if (IS_ERR(authkey_ref)) {
authkey = ERR_CAST(authkey_ref);
if (authkey == ERR_PTR(-EAGAIN))
authkey = ERR_PTR(-ENOKEY);
goto error;
}
authkey = key_ref_to_ptr(authkey_ref);
if (test_bit(KEY_FLAG_REVOKED, &authkey->flags)) {
key_put(authkey);
authkey = ERR_PTR(-EKEYREVOKED);
}
error:
return authkey;
} | 164 | True | 1 |
|
CVE-2017-2647 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1428353', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/97258', 'name': '97258', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2444', 'name': 'RHSA-2017:2444', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2437', 'name': 'RHSA-2017:2437', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:2077', 'name': 'RHSA-2017:2077', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://access.redhat.com/errata/RHSA-2017:1842', 'name': 'RHSA-2017:1842', 'refsource': 'REDHAT', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-2/', 'name': 'USN-3849-2', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'https://usn.ubuntu.com/3849-1/', 'name': 'USN-3849-1', 'refsource': 'UBUNTU', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.'}] | 2019-01-15T11:29Z | 2017-03-31T04:59Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | David Howells | 2014-09-16 17:36:06+01:00 | KEYS: Remove key_type::match in favour of overriding default by match_preparse
A previous patch added a ->match_preparse() method to the key type. This is
allowed to override the function called by the iteration algorithm.
Therefore, we can just set a default that simply checks for an exact match of
the key description with the original criterion data and allow match_preparse
to override it as needed.
The key_type::match op is then redundant and can be removed, as can the
user_match() function.
Signed-off-by: David Howells <[email protected]>
Acked-by: Vivek Goyal <[email protected]> | c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | user_match | user_match( const struct key * key , const struct key_match_data * match_data) | ['key', 'match_data'] | int user_match(const struct key *key, const struct key_match_data *match_data)
{
return strcmp(key->description, match_data->raw_data) == 0;
} | 30 | True | 1 |
|
CVE-2014-7842 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4', 'name': 'https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a2b9e6c1a35afcc0973acb72e591c714e78885ff', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a2b9e6c1a35afcc0973acb72e591c714e78885ff', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/a2b9e6c1a35afcc0973acb72e591c714e78885ff', 'name': 'https://github.com/torvalds/linux/commit/a2b9e6c1a35afcc0973acb72e591c714e78885ff', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1163762', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1163762', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/11/13/7', 'name': '[oss-security] 20141113 CVE-2014-7842 Linux kernel: kvm: reporting emulation failures to userspace', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://secunia.com/advisories/62326', 'name': '62326', 'refsource': 'SECUNIA', 'tags': []}, {'url': 'http://secunia.com/advisories/62305', 'name': '62305', 'refsource': 'SECUNIA', 'tags': []}, {'url': 'http://secunia.com/advisories/62336', 'name': '62336', 'refsource': 'SECUNIA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html', 'name': 'SUSE-SU-2015:0652', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0855.html', 'name': 'RHSA-2016:0855', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/71078', 'name': '71078', 'refsource': 'BID', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.24:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.18:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.48:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.63:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.38:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.46:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.47:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.11.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.14.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.14:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.13.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.13.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.68:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.13.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.27:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.34:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.35:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.57:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.58:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.32:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.15:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.7:*:*:*:*:*:arm64:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.11.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.11.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.11.9:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.12.14:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.12.15:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.13.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.14:rc1:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.17.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.13.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.2:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc4:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.36:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.37:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.51:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.52:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.14:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.14.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.3', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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'cpe:2.3:o:linux:linux_kernel:3.1:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.27:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.11.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.12.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.2:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Race condition in arch/x86/kvm/x86.c in the Linux kernel before 3.17.4 allows guest OS users to cause a denial of service (guest OS crash) via a crafted application that performs an MMIO transaction or a PIO transaction to trigger a guest userspace emulation error report, a similar issue to CVE-2010-5313.'}] | 2017-01-03T02:59Z | 2014-11-30T01:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Nadav Amit | 2014-09-17 02:50:50+03:00 | KVM: x86: Don't report guest userspace emulation error to userspace
Commit fc3a9157d314 ("KVM: X86: Don't report L2 emulation failures to
user-space") disabled the reporting of L2 (nested guest) emulation failures to
userspace due to race-condition between a vmexit and the instruction emulator.
The same rational applies also to userspace applications that are permitted by
the guest OS to access MMIO area or perform PIO.
This patch extends the current behavior - of injecting a #UD instead of
reporting it to userspace - also for guest userspace code.
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | a2b9e6c1a35afcc0973acb72e591c714e78885ff | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | handle_emulation_failure | handle_emulation_failure( struct kvm_vcpu * vcpu) | ['vcpu'] | static int handle_emulation_failure(struct kvm_vcpu *vcpu)
{
int r = EMULATE_DONE;
++vcpu->stat.insn_emulation_fail;
trace_kvm_emulate_insn_failed(vcpu);
if (!is_guest_mode(vcpu)) {
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
vcpu->run->internal.ndata = 0;
r = EMULATE_FAIL;
}
kvm_queue_exception(vcpu, UD_VECTOR);
return r;
} | 78 | True | 1 |
|
CVE-2014-8160 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:P/A:N | NETWORK | LOW | NONE | NONE | PARTIAL | NONE | 5.0 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2015/01/14/3', 'name': '[oss-security] 20150114 CVE-2014-8160 Linux Kernel: SCTP firewalling fails until SCTP module is loaded', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1182059', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1182059', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/db29a9508a9246e77087c5531e45b2c88ec6988b', 'name': 'https://github.com/torvalds/linux/commit/db29a9508a9246e77087c5531e45b2c88ec6988b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.spinics.net/lists/netfilter-devel/msg33430.html', 'name': '[netfilter-devel] 20140925 [PATCH nf] netfilter: conntrack: disable generic protocol tracking', 'refsource': 'MLIST', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=db29a9508a9246e77087c5531e45b2c88ec6988b', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=db29a9508a9246e77087c5531e45b2c88ec6988b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2518-1', 'name': 'USN-2518-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2515-1', 'name': 'USN-2515-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2516-1', 'name': 'USN-2516-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2517-1', 'name': 'USN-2517-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/72061', 'name': '72061', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.ubuntu.com/usn/USN-2514-1', 'name': 'USN-2514-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2513-1', 'name': 'USN-2513-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0284.html', 'name': 'RHSA-2015:0284', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0674.html', 'name': 'RHSA-2015:0674', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3170', 'name': 'DSA-3170', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html', 'name': 'SUSE-SU-2015:0529', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:057', 'name': 'MDVSA-2015:057', 'refsource': 'MANDRIVA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html', 'name': 'SUSE-SU-2015:0652', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html', 'name': 'openSUSE-SU-2015:0714', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.18', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:ltss:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_real_time_extension:11:sp3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_desktop:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_server:12:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:6.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_aus:6.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_tus:6.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:6.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_tus:6.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'net/netfilter/nf_conntrack_proto_generic.c in the Linux kernel before 3.18 generates incorrect conntrack entries during handling of certain iptables rule sets for the SCTP, DCCP, GRE, and UDP-Lite protocols, which allows remote attackers to bypass intended access restrictions via packets with disallowed port numbers.'}] | 2020-05-21T20:11Z | 2015-03-02T11:59Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Florian Westphal | 2014-09-26 11:35:42+02:00 | netfilter: conntrack: disable generic tracking for known protocols
Given following iptables ruleset:
-P FORWARD DROP
-A FORWARD -m sctp --dport 9 -j ACCEPT
-A FORWARD -p tcp --dport 80 -j ACCEPT
-A FORWARD -p tcp -m conntrack -m state ESTABLISHED,RELATED -j ACCEPT
One would assume that this allows SCTP on port 9 and TCP on port 80.
Unfortunately, if the SCTP conntrack module is not loaded, this allows
*all* SCTP communication, to pass though, i.e. -p sctp -j ACCEPT,
which we think is a security issue.
This is because on the first SCTP packet on port 9, we create a dummy
"generic l4" conntrack entry without any port information (since
conntrack doesn't know how to extract this information).
All subsequent packets that are unknown will then be in established
state since they will fallback to proto_generic and will match the
'generic' entry.
Our originally proposed version [1] completely disabled generic protocol
tracking, but Jozsef suggests to not track protocols for which a more
suitable helper is available, hence we now mitigate the issue for in
tree known ct protocol helpers only, so that at least NAT and direction
information will still be preserved for others.
[1] http://www.spinics.net/lists/netfilter-devel/msg33430.html
Joint work with Daniel Borkmann.
Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: Jozsef Kadlecsik <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]> | db29a9508a9246e77087c5531e45b2c88ec6988b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | generic_new | generic_new( struct nf_conn * ct , const struct sk_buff * skb , unsigned int dataoff , unsigned int * timeouts) | ['ct', 'skb', 'dataoff', 'timeouts'] | static bool generic_new(struct nf_conn *ct, const struct sk_buff *skb,
unsigned int dataoff, unsigned int *timeouts)
{
return true;
} | 27 | True | 1 |
|
CVE-2014-3673 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NETWORK | LOW | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 7.5 | HIGH | 3.9 | 3.6 | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1147850', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1147850', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Issue Tracking', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'name': 'https://github.com/torvalds/linux/commit/9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3088.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3088.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3087.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3087.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70883', 'name': '70883', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3089.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3089.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://secunia.com/advisories/62428', 'name': '62428', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0062.html', 'name': 'RHSA-2015:0062', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0115.html', 'name': 'RHSA-2015:0115', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html', 'name': 'SUSE-SU-2015:0529', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html', 'name': 'SUSE-SU-2015:0652', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html', 'name': 'SUSE-SU-2015:0812', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722450701342&w=2', 'name': 'HPSBGN03285', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722544401658&w=2', 'name': 'HPSBGN03282', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp1:*:*:ltss:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:10:sp4:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:5:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The SCTP implementation in the Linux kernel through 3.17.2 allows remote attackers to cause a denial of service (system crash) via a malformed ASCONF chunk, related to net/sctp/sm_make_chunk.c and net/sctp/sm_statefuns.c.'}] | 2021-07-15T19:16Z | 2014-11-10T11:55Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Daniel Borkmann | 2014-10-09 22:55:31+02:00 | net: sctp: fix skb_over_panic when receiving malformed ASCONF chunks
Commit 6f4c618ddb0 ("SCTP : Add paramters validity check for
ASCONF chunk") added basic verification of ASCONF chunks, however,
it is still possible to remotely crash a server by sending a
special crafted ASCONF chunk, even up to pre 2.6.12 kernels:
skb_over_panic: text:ffffffffa01ea1c3 len:31056 put:30768
head:ffff88011bd81800 data:ffff88011bd81800 tail:0x7950
end:0x440 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:129!
[...]
Call Trace:
<IRQ>
[<ffffffff8144fb1c>] skb_put+0x5c/0x70
[<ffffffffa01ea1c3>] sctp_addto_chunk+0x63/0xd0 [sctp]
[<ffffffffa01eadaf>] sctp_process_asconf+0x1af/0x540 [sctp]
[<ffffffff8152d025>] ? _read_unlock_bh+0x15/0x20
[<ffffffffa01e0038>] sctp_sf_do_asconf+0x168/0x240 [sctp]
[<ffffffffa01e3751>] sctp_do_sm+0x71/0x1210 [sctp]
[<ffffffff8147645d>] ? fib_rules_lookup+0xad/0xf0
[<ffffffffa01e6b22>] ? sctp_cmp_addr_exact+0x32/0x40 [sctp]
[<ffffffffa01e8393>] sctp_assoc_bh_rcv+0xd3/0x180 [sctp]
[<ffffffffa01ee986>] sctp_inq_push+0x56/0x80 [sctp]
[<ffffffffa01fcc42>] sctp_rcv+0x982/0xa10 [sctp]
[<ffffffffa01d5123>] ? ipt_local_in_hook+0x23/0x28 [iptable_filter]
[<ffffffff8148bdc9>] ? nf_iterate+0x69/0xb0
[<ffffffff81496d10>] ? ip_local_deliver_finish+0x0/0x2d0
[<ffffffff8148bf86>] ? nf_hook_slow+0x76/0x120
[<ffffffff81496d10>] ? ip_local_deliver_finish+0x0/0x2d0
[<ffffffff81496ded>] ip_local_deliver_finish+0xdd/0x2d0
[<ffffffff81497078>] ip_local_deliver+0x98/0xa0
[<ffffffff8149653d>] ip_rcv_finish+0x12d/0x440
[<ffffffff81496ac5>] ip_rcv+0x275/0x350
[<ffffffff8145c88b>] __netif_receive_skb+0x4ab/0x750
[<ffffffff81460588>] netif_receive_skb+0x58/0x60
This can be triggered e.g., through a simple scripted nmap
connection scan injecting the chunk after the handshake, for
example, ...
-------------- INIT[ASCONF; ASCONF_ACK] ------------->
<----------- INIT-ACK[ASCONF; ASCONF_ACK] ------------
-------------------- COOKIE-ECHO -------------------->
<-------------------- COOKIE-ACK ---------------------
------------------ ASCONF; UNKNOWN ------------------>
... where ASCONF chunk of length 280 contains 2 parameters ...
1) Add IP address parameter (param length: 16)
2) Add/del IP address parameter (param length: 255)
... followed by an UNKNOWN chunk of e.g. 4 bytes. Here, the
Address Parameter in the ASCONF chunk is even missing, too.
This is just an example and similarly-crafted ASCONF chunks
could be used just as well.
The ASCONF chunk passes through sctp_verify_asconf() as all
parameters passed sanity checks, and after walking, we ended
up successfully at the chunk end boundary, and thus may invoke
sctp_process_asconf(). Parameter walking is done with
WORD_ROUND() to take padding into account.
In sctp_process_asconf()'s TLV processing, we may fail in
sctp_process_asconf_param() e.g., due to removal of the IP
address that is also the source address of the packet containing
the ASCONF chunk, and thus we need to add all TLVs after the
failure to our ASCONF response to remote via helper function
sctp_add_asconf_response(), which basically invokes a
sctp_addto_chunk() adding the error parameters to the given
skb.
When walking to the next parameter this time, we proceed
with ...
length = ntohs(asconf_param->param_hdr.length);
asconf_param = (void *)asconf_param + length;
... instead of the WORD_ROUND()'ed length, thus resulting here
in an off-by-one that leads to reading the follow-up garbage
parameter length of 12336, and thus throwing an skb_over_panic
for the reply when trying to sctp_addto_chunk() next time,
which implicitly calls the skb_put() with that length.
Fix it by using sctp_walk_params() [ which is also used in
INIT parameter processing ] macro in the verification *and*
in ASCONF processing: it will make sure we don't spill over,
that we walk parameters WORD_ROUND()'ed. Moreover, we're being
more defensive and guard against unknown parameter types and
missized addresses.
Joint work with Vlad Yasevich.
Fixes: b896b82be4ae ("[SCTP] ADDIP: Support for processing incoming ASCONF_ACK chunks.")
Signed-off-by: Daniel Borkmann <[email protected]>
Signed-off-by: Vlad Yasevich <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 9de7922bc709eee2f609cd01d98aaedc4cf5ea74 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | sctp_process_asconf | sctp_process_asconf( struct sctp_association * asoc , struct sctp_chunk * asconf) | ['asoc', 'asconf'] | struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc,
struct sctp_chunk *asconf)
{
sctp_addiphdr_t *hdr;
union sctp_addr_param *addr_param;
sctp_addip_param_t *asconf_param;
struct sctp_chunk *asconf_ack;
__be16 err_code;
int length = 0;
int chunk_len;
__u32 serial;
int all_param_pass = 1;
chunk_len = ntohs(asconf->chunk_hdr->length) - sizeof(sctp_chunkhdr_t);
hdr = (sctp_addiphdr_t *)asconf->skb->data;
serial = ntohl(hdr->serial);
/* Skip the addiphdr and store a pointer to address parameter. */
length = sizeof(sctp_addiphdr_t);
addr_param = (union sctp_addr_param *)(asconf->skb->data + length);
chunk_len -= length;
/* Skip the address parameter and store a pointer to the first
* asconf parameter.
*/
length = ntohs(addr_param->p.length);
asconf_param = (void *)addr_param + length;
chunk_len -= length;
/* create an ASCONF_ACK chunk.
* Based on the definitions of parameters, we know that the size of
* ASCONF_ACK parameters are less than or equal to the fourfold of ASCONF
* parameters.
*/
asconf_ack = sctp_make_asconf_ack(asoc, serial, chunk_len * 4);
if (!asconf_ack)
goto done;
/* Process the TLVs contained within the ASCONF chunk. */
while (chunk_len > 0) {
err_code = sctp_process_asconf_param(asoc, asconf,
asconf_param);
/* ADDIP 4.1 A7)
* If an error response is received for a TLV parameter,
* all TLVs with no response before the failed TLV are
* considered successful if not reported. All TLVs after
* the failed response are considered unsuccessful unless
* a specific success indication is present for the parameter.
*/
if (SCTP_ERROR_NO_ERROR != err_code)
all_param_pass = 0;
if (!all_param_pass)
sctp_add_asconf_response(asconf_ack,
asconf_param->crr_id, err_code,
asconf_param);
/* ADDIP 4.3 D11) When an endpoint receiving an ASCONF to add
* an IP address sends an 'Out of Resource' in its response, it
* MUST also fail any subsequent add or delete requests bundled
* in the ASCONF.
*/
if (SCTP_ERROR_RSRC_LOW == err_code)
goto done;
/* Move to the next ASCONF param. */
length = ntohs(asconf_param->param_hdr.length);
asconf_param = (void *)asconf_param + length;
chunk_len -= length;
}
done:
asoc->peer.addip_serial++;
/* If we are sending a new ASCONF_ACK hold a reference to it in assoc
* after freeing the reference to old asconf ack if any.
*/
if (asconf_ack) {
sctp_chunk_hold(asconf_ack);
list_add_tail(&asconf_ack->transmitted_list,
&asoc->asconf_ack_list);
}
return asconf_ack;
} | 279 | True | 1 |
|
CVE-2014-3673 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NETWORK | LOW | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 7.5 | HIGH | 3.9 | 3.6 | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1147850', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1147850', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Issue Tracking', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'name': 'https://github.com/torvalds/linux/commit/9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3088.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3088.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3087.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3087.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70883', 'name': '70883', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3089.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3089.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://secunia.com/advisories/62428', 'name': '62428', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0062.html', 'name': 'RHSA-2015:0062', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0115.html', 'name': 'RHSA-2015:0115', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html', 'name': 'SUSE-SU-2015:0529', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html', 'name': 'SUSE-SU-2015:0652', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html', 'name': 'SUSE-SU-2015:0812', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722450701342&w=2', 'name': 'HPSBGN03285', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722544401658&w=2', 'name': 'HPSBGN03282', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp1:*:*:ltss:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:10:sp4:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:5:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The SCTP implementation in the Linux kernel through 3.17.2 allows remote attackers to cause a denial of service (system crash) via a malformed ASCONF chunk, related to net/sctp/sm_make_chunk.c and net/sctp/sm_statefuns.c.'}] | 2021-07-15T19:16Z | 2014-11-10T11:55Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Daniel Borkmann | 2014-10-09 22:55:31+02:00 | net: sctp: fix skb_over_panic when receiving malformed ASCONF chunks
Commit 6f4c618ddb0 ("SCTP : Add paramters validity check for
ASCONF chunk") added basic verification of ASCONF chunks, however,
it is still possible to remotely crash a server by sending a
special crafted ASCONF chunk, even up to pre 2.6.12 kernels:
skb_over_panic: text:ffffffffa01ea1c3 len:31056 put:30768
head:ffff88011bd81800 data:ffff88011bd81800 tail:0x7950
end:0x440 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:129!
[...]
Call Trace:
<IRQ>
[<ffffffff8144fb1c>] skb_put+0x5c/0x70
[<ffffffffa01ea1c3>] sctp_addto_chunk+0x63/0xd0 [sctp]
[<ffffffffa01eadaf>] sctp_process_asconf+0x1af/0x540 [sctp]
[<ffffffff8152d025>] ? _read_unlock_bh+0x15/0x20
[<ffffffffa01e0038>] sctp_sf_do_asconf+0x168/0x240 [sctp]
[<ffffffffa01e3751>] sctp_do_sm+0x71/0x1210 [sctp]
[<ffffffff8147645d>] ? fib_rules_lookup+0xad/0xf0
[<ffffffffa01e6b22>] ? sctp_cmp_addr_exact+0x32/0x40 [sctp]
[<ffffffffa01e8393>] sctp_assoc_bh_rcv+0xd3/0x180 [sctp]
[<ffffffffa01ee986>] sctp_inq_push+0x56/0x80 [sctp]
[<ffffffffa01fcc42>] sctp_rcv+0x982/0xa10 [sctp]
[<ffffffffa01d5123>] ? ipt_local_in_hook+0x23/0x28 [iptable_filter]
[<ffffffff8148bdc9>] ? nf_iterate+0x69/0xb0
[<ffffffff81496d10>] ? ip_local_deliver_finish+0x0/0x2d0
[<ffffffff8148bf86>] ? nf_hook_slow+0x76/0x120
[<ffffffff81496d10>] ? ip_local_deliver_finish+0x0/0x2d0
[<ffffffff81496ded>] ip_local_deliver_finish+0xdd/0x2d0
[<ffffffff81497078>] ip_local_deliver+0x98/0xa0
[<ffffffff8149653d>] ip_rcv_finish+0x12d/0x440
[<ffffffff81496ac5>] ip_rcv+0x275/0x350
[<ffffffff8145c88b>] __netif_receive_skb+0x4ab/0x750
[<ffffffff81460588>] netif_receive_skb+0x58/0x60
This can be triggered e.g., through a simple scripted nmap
connection scan injecting the chunk after the handshake, for
example, ...
-------------- INIT[ASCONF; ASCONF_ACK] ------------->
<----------- INIT-ACK[ASCONF; ASCONF_ACK] ------------
-------------------- COOKIE-ECHO -------------------->
<-------------------- COOKIE-ACK ---------------------
------------------ ASCONF; UNKNOWN ------------------>
... where ASCONF chunk of length 280 contains 2 parameters ...
1) Add IP address parameter (param length: 16)
2) Add/del IP address parameter (param length: 255)
... followed by an UNKNOWN chunk of e.g. 4 bytes. Here, the
Address Parameter in the ASCONF chunk is even missing, too.
This is just an example and similarly-crafted ASCONF chunks
could be used just as well.
The ASCONF chunk passes through sctp_verify_asconf() as all
parameters passed sanity checks, and after walking, we ended
up successfully at the chunk end boundary, and thus may invoke
sctp_process_asconf(). Parameter walking is done with
WORD_ROUND() to take padding into account.
In sctp_process_asconf()'s TLV processing, we may fail in
sctp_process_asconf_param() e.g., due to removal of the IP
address that is also the source address of the packet containing
the ASCONF chunk, and thus we need to add all TLVs after the
failure to our ASCONF response to remote via helper function
sctp_add_asconf_response(), which basically invokes a
sctp_addto_chunk() adding the error parameters to the given
skb.
When walking to the next parameter this time, we proceed
with ...
length = ntohs(asconf_param->param_hdr.length);
asconf_param = (void *)asconf_param + length;
... instead of the WORD_ROUND()'ed length, thus resulting here
in an off-by-one that leads to reading the follow-up garbage
parameter length of 12336, and thus throwing an skb_over_panic
for the reply when trying to sctp_addto_chunk() next time,
which implicitly calls the skb_put() with that length.
Fix it by using sctp_walk_params() [ which is also used in
INIT parameter processing ] macro in the verification *and*
in ASCONF processing: it will make sure we don't spill over,
that we walk parameters WORD_ROUND()'ed. Moreover, we're being
more defensive and guard against unknown parameter types and
missized addresses.
Joint work with Vlad Yasevich.
Fixes: b896b82be4ae ("[SCTP] ADDIP: Support for processing incoming ASCONF_ACK chunks.")
Signed-off-by: Daniel Borkmann <[email protected]>
Signed-off-by: Vlad Yasevich <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 9de7922bc709eee2f609cd01d98aaedc4cf5ea74 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | sctp_verify_asconf | sctp_verify_asconf( const struct sctp_association * asoc , struct sctp_paramhdr * param_hdr , void * chunk_end , struct sctp_paramhdr ** errp) | ['asoc', 'param_hdr', 'chunk_end', 'errp'] | int sctp_verify_asconf(const struct sctp_association *asoc,
struct sctp_paramhdr *param_hdr, void *chunk_end,
struct sctp_paramhdr **errp) {
sctp_addip_param_t *asconf_param;
union sctp_params param;
int length, plen;
param.v = (sctp_paramhdr_t *) param_hdr;
while (param.v <= chunk_end - sizeof(sctp_paramhdr_t)) {
length = ntohs(param.p->length);
*errp = param.p;
if (param.v > chunk_end - length ||
length < sizeof(sctp_paramhdr_t))
return 0;
switch (param.p->type) {
case SCTP_PARAM_ADD_IP:
case SCTP_PARAM_DEL_IP:
case SCTP_PARAM_SET_PRIMARY:
asconf_param = (sctp_addip_param_t *)param.v;
plen = ntohs(asconf_param->param_hdr.length);
if (plen < sizeof(sctp_addip_param_t) +
sizeof(sctp_paramhdr_t))
return 0;
break;
case SCTP_PARAM_SUCCESS_REPORT:
case SCTP_PARAM_ADAPTATION_LAYER_IND:
if (length != sizeof(sctp_addip_param_t))
return 0;
break;
default:
break;
}
param.v += WORD_ROUND(length);
}
if (param.v != chunk_end)
return 0;
return 1;
} | 206 | True | 1 |
|
CVE-2014-3673 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NETWORK | LOW | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 7.5 | HIGH | 3.9 | 3.6 | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1147850', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1147850', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Issue Tracking', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'name': 'https://github.com/torvalds/linux/commit/9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3088.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3088.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3087.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3087.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70883', 'name': '70883', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3089.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3089.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://secunia.com/advisories/62428', 'name': '62428', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0062.html', 'name': 'RHSA-2015:0062', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0115.html', 'name': 'RHSA-2015:0115', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html', 'name': 'SUSE-SU-2015:0529', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html', 'name': 'SUSE-SU-2015:0652', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html', 'name': 'SUSE-SU-2015:0812', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722450701342&w=2', 'name': 'HPSBGN03285', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722544401658&w=2', 'name': 'HPSBGN03282', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp1:*:*:ltss:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:10:sp4:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:5:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The SCTP implementation in the Linux kernel through 3.17.2 allows remote attackers to cause a denial of service (system crash) via a malformed ASCONF chunk, related to net/sctp/sm_make_chunk.c and net/sctp/sm_statefuns.c.'}] | 2021-07-15T19:16Z | 2014-11-10T11:55Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Daniel Borkmann | 2014-10-09 22:55:31+02:00 | net: sctp: fix skb_over_panic when receiving malformed ASCONF chunks
Commit 6f4c618ddb0 ("SCTP : Add paramters validity check for
ASCONF chunk") added basic verification of ASCONF chunks, however,
it is still possible to remotely crash a server by sending a
special crafted ASCONF chunk, even up to pre 2.6.12 kernels:
skb_over_panic: text:ffffffffa01ea1c3 len:31056 put:30768
head:ffff88011bd81800 data:ffff88011bd81800 tail:0x7950
end:0x440 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:129!
[...]
Call Trace:
<IRQ>
[<ffffffff8144fb1c>] skb_put+0x5c/0x70
[<ffffffffa01ea1c3>] sctp_addto_chunk+0x63/0xd0 [sctp]
[<ffffffffa01eadaf>] sctp_process_asconf+0x1af/0x540 [sctp]
[<ffffffff8152d025>] ? _read_unlock_bh+0x15/0x20
[<ffffffffa01e0038>] sctp_sf_do_asconf+0x168/0x240 [sctp]
[<ffffffffa01e3751>] sctp_do_sm+0x71/0x1210 [sctp]
[<ffffffff8147645d>] ? fib_rules_lookup+0xad/0xf0
[<ffffffffa01e6b22>] ? sctp_cmp_addr_exact+0x32/0x40 [sctp]
[<ffffffffa01e8393>] sctp_assoc_bh_rcv+0xd3/0x180 [sctp]
[<ffffffffa01ee986>] sctp_inq_push+0x56/0x80 [sctp]
[<ffffffffa01fcc42>] sctp_rcv+0x982/0xa10 [sctp]
[<ffffffffa01d5123>] ? ipt_local_in_hook+0x23/0x28 [iptable_filter]
[<ffffffff8148bdc9>] ? nf_iterate+0x69/0xb0
[<ffffffff81496d10>] ? ip_local_deliver_finish+0x0/0x2d0
[<ffffffff8148bf86>] ? nf_hook_slow+0x76/0x120
[<ffffffff81496d10>] ? ip_local_deliver_finish+0x0/0x2d0
[<ffffffff81496ded>] ip_local_deliver_finish+0xdd/0x2d0
[<ffffffff81497078>] ip_local_deliver+0x98/0xa0
[<ffffffff8149653d>] ip_rcv_finish+0x12d/0x440
[<ffffffff81496ac5>] ip_rcv+0x275/0x350
[<ffffffff8145c88b>] __netif_receive_skb+0x4ab/0x750
[<ffffffff81460588>] netif_receive_skb+0x58/0x60
This can be triggered e.g., through a simple scripted nmap
connection scan injecting the chunk after the handshake, for
example, ...
-------------- INIT[ASCONF; ASCONF_ACK] ------------->
<----------- INIT-ACK[ASCONF; ASCONF_ACK] ------------
-------------------- COOKIE-ECHO -------------------->
<-------------------- COOKIE-ACK ---------------------
------------------ ASCONF; UNKNOWN ------------------>
... where ASCONF chunk of length 280 contains 2 parameters ...
1) Add IP address parameter (param length: 16)
2) Add/del IP address parameter (param length: 255)
... followed by an UNKNOWN chunk of e.g. 4 bytes. Here, the
Address Parameter in the ASCONF chunk is even missing, too.
This is just an example and similarly-crafted ASCONF chunks
could be used just as well.
The ASCONF chunk passes through sctp_verify_asconf() as all
parameters passed sanity checks, and after walking, we ended
up successfully at the chunk end boundary, and thus may invoke
sctp_process_asconf(). Parameter walking is done with
WORD_ROUND() to take padding into account.
In sctp_process_asconf()'s TLV processing, we may fail in
sctp_process_asconf_param() e.g., due to removal of the IP
address that is also the source address of the packet containing
the ASCONF chunk, and thus we need to add all TLVs after the
failure to our ASCONF response to remote via helper function
sctp_add_asconf_response(), which basically invokes a
sctp_addto_chunk() adding the error parameters to the given
skb.
When walking to the next parameter this time, we proceed
with ...
length = ntohs(asconf_param->param_hdr.length);
asconf_param = (void *)asconf_param + length;
... instead of the WORD_ROUND()'ed length, thus resulting here
in an off-by-one that leads to reading the follow-up garbage
parameter length of 12336, and thus throwing an skb_over_panic
for the reply when trying to sctp_addto_chunk() next time,
which implicitly calls the skb_put() with that length.
Fix it by using sctp_walk_params() [ which is also used in
INIT parameter processing ] macro in the verification *and*
in ASCONF processing: it will make sure we don't spill over,
that we walk parameters WORD_ROUND()'ed. Moreover, we're being
more defensive and guard against unknown parameter types and
missized addresses.
Joint work with Vlad Yasevich.
Fixes: b896b82be4ae ("[SCTP] ADDIP: Support for processing incoming ASCONF_ACK chunks.")
Signed-off-by: Daniel Borkmann <[email protected]>
Signed-off-by: Vlad Yasevich <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 9de7922bc709eee2f609cd01d98aaedc4cf5ea74 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | sctp_sf_do_asconf | sctp_sf_do_asconf( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands) | ['net', 'ep', 'asoc', 'type', 'arg', 'commands'] | sctp_disposition_t sctp_sf_do_asconf(struct net *net,
const struct sctp_endpoint *ep,
const struct sctp_association *asoc,
const sctp_subtype_t type, void *arg,
sctp_cmd_seq_t *commands)
{
struct sctp_chunk *chunk = arg;
struct sctp_chunk *asconf_ack = NULL;
struct sctp_paramhdr *err_param = NULL;
sctp_addiphdr_t *hdr;
union sctp_addr_param *addr_param;
__u32 serial;
int length;
if (!sctp_vtag_verify(chunk, asoc)) {
sctp_add_cmd_sf(commands, SCTP_CMD_REPORT_BAD_TAG,
SCTP_NULL());
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
}
/* ADD-IP: Section 4.1.1
* This chunk MUST be sent in an authenticated way by using
* the mechanism defined in [I-D.ietf-tsvwg-sctp-auth]. If this chunk
* is received unauthenticated it MUST be silently discarded as
* described in [I-D.ietf-tsvwg-sctp-auth].
*/
if (!net->sctp.addip_noauth && !chunk->auth)
return sctp_sf_discard_chunk(net, ep, asoc, type, arg, commands);
/* Make sure that the ASCONF ADDIP chunk has a valid length. */
if (!sctp_chunk_length_valid(chunk, sizeof(sctp_addip_chunk_t)))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
commands);
hdr = (sctp_addiphdr_t *)chunk->skb->data;
serial = ntohl(hdr->serial);
addr_param = (union sctp_addr_param *)hdr->params;
length = ntohs(addr_param->p.length);
if (length < sizeof(sctp_paramhdr_t))
return sctp_sf_violation_paramlen(net, ep, asoc, type, arg,
(void *)addr_param, commands);
/* Verify the ASCONF chunk before processing it. */
if (!sctp_verify_asconf(asoc,
(sctp_paramhdr_t *)((void *)addr_param + length),
(void *)chunk->chunk_end,
&err_param))
return sctp_sf_violation_paramlen(net, ep, asoc, type, arg,
(void *)err_param, commands);
/* ADDIP 5.2 E1) Compare the value of the serial number to the value
* the endpoint stored in a new association variable
* 'Peer-Serial-Number'.
*/
if (serial == asoc->peer.addip_serial + 1) {
/* If this is the first instance of ASCONF in the packet,
* we can clean our old ASCONF-ACKs.
*/
if (!chunk->has_asconf)
sctp_assoc_clean_asconf_ack_cache(asoc);
/* ADDIP 5.2 E4) When the Sequence Number matches the next one
* expected, process the ASCONF as described below and after
* processing the ASCONF Chunk, append an ASCONF-ACK Chunk to
* the response packet and cache a copy of it (in the event it
* later needs to be retransmitted).
*
* Essentially, do V1-V5.
*/
asconf_ack = sctp_process_asconf((struct sctp_association *)
asoc, chunk);
if (!asconf_ack)
return SCTP_DISPOSITION_NOMEM;
} else if (serial < asoc->peer.addip_serial + 1) {
/* ADDIP 5.2 E2)
* If the value found in the Sequence Number is less than the
* ('Peer- Sequence-Number' + 1), simply skip to the next
* ASCONF, and include in the outbound response packet
* any previously cached ASCONF-ACK response that was
* sent and saved that matches the Sequence Number of the
* ASCONF. Note: It is possible that no cached ASCONF-ACK
* Chunk exists. This will occur when an older ASCONF
* arrives out of order. In such a case, the receiver
* should skip the ASCONF Chunk and not include ASCONF-ACK
* Chunk for that chunk.
*/
asconf_ack = sctp_assoc_lookup_asconf_ack(asoc, hdr->serial);
if (!asconf_ack)
return SCTP_DISPOSITION_DISCARD;
/* Reset the transport so that we select the correct one
* this time around. This is to make sure that we don't
* accidentally use a stale transport that's been removed.
*/
asconf_ack->transport = NULL;
} else {
/* ADDIP 5.2 E5) Otherwise, the ASCONF Chunk is discarded since
* it must be either a stale packet or from an attacker.
*/
return SCTP_DISPOSITION_DISCARD;
}
/* ADDIP 5.2 E6) The destination address of the SCTP packet
* containing the ASCONF-ACK Chunks MUST be the source address of
* the SCTP packet that held the ASCONF Chunks.
*
* To do this properly, we'll set the destination address of the chunk
* and at the transmit time, will try look up the transport to use.
* Since ASCONFs may be bundled, the correct transport may not be
* created until we process the entire packet, thus this workaround.
*/
asconf_ack->dest = chunk->source;
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(asconf_ack));
if (asoc->new_transport) {
sctp_sf_heartbeat(ep, asoc, type, asoc->new_transport, commands);
((struct sctp_association *)asoc)->new_transport = NULL;
}
return SCTP_DISPOSITION_CONSUME;
} | 449 | True | 1 |
|
CVE-2014-3673 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NETWORK | LOW | NONE | NONE | UNCHANGED | NONE | NONE | HIGH | 7.5 | HIGH | 3.9 | 3.6 | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1147850', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1147850', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Issue Tracking', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'name': 'https://github.com/torvalds/linux/commit/9de7922bc709eee2f609cd01d98aaedc4cf5ea74', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3088.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3088.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3087.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3087.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70883', 'name': '70883', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://linux.oracle.com/errata/ELSA-2014-3089.html', 'name': 'http://linux.oracle.com/errata/ELSA-2014-3089.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://secunia.com/advisories/62428', 'name': '62428', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0062.html', 'name': 'RHSA-2015:0062', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0115.html', 'name': 'RHSA-2015:0115', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html', 'name': 'SUSE-SU-2015:0529', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html', 'name': 'SUSE-SU-2015:0652', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html', 'name': 'SUSE-SU-2015:0812', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722450701342&w=2', 'name': 'HPSBGN03285', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722544401658&w=2', 'name': 'HPSBGN03282', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-20'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp1:*:*:ltss:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:10:sp4:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:5:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The SCTP implementation in the Linux kernel through 3.17.2 allows remote attackers to cause a denial of service (system crash) via a malformed ASCONF chunk, related to net/sctp/sm_make_chunk.c and net/sctp/sm_statefuns.c.'}] | 2021-07-15T19:16Z | 2014-11-10T11:55Z | Improper Input Validation | The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
Input validation is a frequently-used technique
for checking potentially dangerous inputs in order to
ensure that the inputs are safe for processing within the
code, or when communicating with other components. When
software does not validate input properly, an attacker is
able to craft the input in a form that is not expected by
the rest of the application. This will lead to parts of the
system receiving unintended input, which may result in
altered control flow, arbitrary control of a resource, or
arbitrary code execution.
Input validation is not the only technique for
processing input, however. Other techniques attempt to
transform potentially-dangerous input into something safe, such
as filtering (CWE-790) - which attempts to remove dangerous
inputs - or encoding/escaping (CWE-116), which attempts to
ensure that the input is not misinterpreted when it is included
in output to another component. Other techniques exist as well
(see CWE-138 for more examples.)
Input validation can be applied to:
raw data - strings, numbers, parameters, file contents, etc.
metadata - information about the raw data, such as headers or size
Data can be simple or structured. Structured data
can be composed of many nested layers, composed of
combinations of metadata and raw data, with other simple or
structured data.
Many properties of raw data or metadata may need
to be validated upon entry into the code, such
as:
specified quantities such as size, length, frequency, price, rate, number of operations, time, etc.
implied or derived quantities, such as the actual size of a file instead of a specified size
indexes, offsets, or positions into more complex data structures
symbolic keys or other elements into hash tables, associative arrays, etc.
well-formedness, i.e. syntactic correctness - compliance with expected syntax
lexical token correctness - compliance with rules for what is treated as a token
specified or derived type - the actual type of the input (or what the input appears to be)
consistency - between individual data elements, between raw data and metadata, between references, etc.
conformance to domain-specific rules, e.g. business logic
equivalence - ensuring that equivalent inputs are treated the same
authenticity, ownership, or other attestations about the input, e.g. a cryptographic signature to prove the source of the data
Implied or derived properties of data must often
be calculated or inferred by the code itself. Errors in
deriving properties may be considered a contributing factor
to improper input validation.
Note that "input validation" has very different
meanings to different people, or within different
classification schemes. Caution must be used when
referencing this CWE entry or mapping to it. For example,
some weaknesses might involve inadvertently giving control
to an attacker over an input when they should not be able
to provide an input at all, but sometimes this is referred
to as input validation.
Finally, it is important to emphasize that the
distinctions between input validation and output escaping
are often blurred, and developers must be careful to
understand the difference, including how input validation
is not always sufficient to prevent vulnerabilities,
especially when less stringent data types must be
supported, such as free-form text. Consider a SQL injection
scenario in which a person's last name is inserted into a
query. The name "O'Reilly" would likely pass the validation
step since it is a common last name in the English
language. However, this valid name cannot be directly
inserted into the database because it contains the "'"
apostrophe character, which would need to be escaped or
otherwise transformed. In this case, removing the
apostrophe might reduce the risk of SQL injection, but it
would produce incorrect behavior because the wrong name
would be recorded.
| https://cwe.mitre.org/data/definitions/20.html | 0 | Daniel Borkmann | 2014-10-09 22:55:31+02:00 | net: sctp: fix skb_over_panic when receiving malformed ASCONF chunks
Commit 6f4c618ddb0 ("SCTP : Add paramters validity check for
ASCONF chunk") added basic verification of ASCONF chunks, however,
it is still possible to remotely crash a server by sending a
special crafted ASCONF chunk, even up to pre 2.6.12 kernels:
skb_over_panic: text:ffffffffa01ea1c3 len:31056 put:30768
head:ffff88011bd81800 data:ffff88011bd81800 tail:0x7950
end:0x440 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:129!
[...]
Call Trace:
<IRQ>
[<ffffffff8144fb1c>] skb_put+0x5c/0x70
[<ffffffffa01ea1c3>] sctp_addto_chunk+0x63/0xd0 [sctp]
[<ffffffffa01eadaf>] sctp_process_asconf+0x1af/0x540 [sctp]
[<ffffffff8152d025>] ? _read_unlock_bh+0x15/0x20
[<ffffffffa01e0038>] sctp_sf_do_asconf+0x168/0x240 [sctp]
[<ffffffffa01e3751>] sctp_do_sm+0x71/0x1210 [sctp]
[<ffffffff8147645d>] ? fib_rules_lookup+0xad/0xf0
[<ffffffffa01e6b22>] ? sctp_cmp_addr_exact+0x32/0x40 [sctp]
[<ffffffffa01e8393>] sctp_assoc_bh_rcv+0xd3/0x180 [sctp]
[<ffffffffa01ee986>] sctp_inq_push+0x56/0x80 [sctp]
[<ffffffffa01fcc42>] sctp_rcv+0x982/0xa10 [sctp]
[<ffffffffa01d5123>] ? ipt_local_in_hook+0x23/0x28 [iptable_filter]
[<ffffffff8148bdc9>] ? nf_iterate+0x69/0xb0
[<ffffffff81496d10>] ? ip_local_deliver_finish+0x0/0x2d0
[<ffffffff8148bf86>] ? nf_hook_slow+0x76/0x120
[<ffffffff81496d10>] ? ip_local_deliver_finish+0x0/0x2d0
[<ffffffff81496ded>] ip_local_deliver_finish+0xdd/0x2d0
[<ffffffff81497078>] ip_local_deliver+0x98/0xa0
[<ffffffff8149653d>] ip_rcv_finish+0x12d/0x440
[<ffffffff81496ac5>] ip_rcv+0x275/0x350
[<ffffffff8145c88b>] __netif_receive_skb+0x4ab/0x750
[<ffffffff81460588>] netif_receive_skb+0x58/0x60
This can be triggered e.g., through a simple scripted nmap
connection scan injecting the chunk after the handshake, for
example, ...
-------------- INIT[ASCONF; ASCONF_ACK] ------------->
<----------- INIT-ACK[ASCONF; ASCONF_ACK] ------------
-------------------- COOKIE-ECHO -------------------->
<-------------------- COOKIE-ACK ---------------------
------------------ ASCONF; UNKNOWN ------------------>
... where ASCONF chunk of length 280 contains 2 parameters ...
1) Add IP address parameter (param length: 16)
2) Add/del IP address parameter (param length: 255)
... followed by an UNKNOWN chunk of e.g. 4 bytes. Here, the
Address Parameter in the ASCONF chunk is even missing, too.
This is just an example and similarly-crafted ASCONF chunks
could be used just as well.
The ASCONF chunk passes through sctp_verify_asconf() as all
parameters passed sanity checks, and after walking, we ended
up successfully at the chunk end boundary, and thus may invoke
sctp_process_asconf(). Parameter walking is done with
WORD_ROUND() to take padding into account.
In sctp_process_asconf()'s TLV processing, we may fail in
sctp_process_asconf_param() e.g., due to removal of the IP
address that is also the source address of the packet containing
the ASCONF chunk, and thus we need to add all TLVs after the
failure to our ASCONF response to remote via helper function
sctp_add_asconf_response(), which basically invokes a
sctp_addto_chunk() adding the error parameters to the given
skb.
When walking to the next parameter this time, we proceed
with ...
length = ntohs(asconf_param->param_hdr.length);
asconf_param = (void *)asconf_param + length;
... instead of the WORD_ROUND()'ed length, thus resulting here
in an off-by-one that leads to reading the follow-up garbage
parameter length of 12336, and thus throwing an skb_over_panic
for the reply when trying to sctp_addto_chunk() next time,
which implicitly calls the skb_put() with that length.
Fix it by using sctp_walk_params() [ which is also used in
INIT parameter processing ] macro in the verification *and*
in ASCONF processing: it will make sure we don't spill over,
that we walk parameters WORD_ROUND()'ed. Moreover, we're being
more defensive and guard against unknown parameter types and
missized addresses.
Joint work with Vlad Yasevich.
Fixes: b896b82be4ae ("[SCTP] ADDIP: Support for processing incoming ASCONF_ACK chunks.")
Signed-off-by: Daniel Borkmann <[email protected]>
Signed-off-by: Vlad Yasevich <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 9de7922bc709eee2f609cd01d98aaedc4cf5ea74 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | sctp_sf_do_asconf_ack | sctp_sf_do_asconf_ack( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands) | ['net', 'ep', 'asoc', 'type', 'arg', 'commands'] | sctp_disposition_t sctp_sf_do_asconf_ack(struct net *net,
const struct sctp_endpoint *ep,
const struct sctp_association *asoc,
const sctp_subtype_t type, void *arg,
sctp_cmd_seq_t *commands)
{
struct sctp_chunk *asconf_ack = arg;
struct sctp_chunk *last_asconf = asoc->addip_last_asconf;
struct sctp_chunk *abort;
struct sctp_paramhdr *err_param = NULL;
sctp_addiphdr_t *addip_hdr;
__u32 sent_serial, rcvd_serial;
if (!sctp_vtag_verify(asconf_ack, asoc)) {
sctp_add_cmd_sf(commands, SCTP_CMD_REPORT_BAD_TAG,
SCTP_NULL());
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
}
/* ADD-IP, Section 4.1.2:
* This chunk MUST be sent in an authenticated way by using
* the mechanism defined in [I-D.ietf-tsvwg-sctp-auth]. If this chunk
* is received unauthenticated it MUST be silently discarded as
* described in [I-D.ietf-tsvwg-sctp-auth].
*/
if (!net->sctp.addip_noauth && !asconf_ack->auth)
return sctp_sf_discard_chunk(net, ep, asoc, type, arg, commands);
/* Make sure that the ADDIP chunk has a valid length. */
if (!sctp_chunk_length_valid(asconf_ack, sizeof(sctp_addip_chunk_t)))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
commands);
addip_hdr = (sctp_addiphdr_t *)asconf_ack->skb->data;
rcvd_serial = ntohl(addip_hdr->serial);
/* Verify the ASCONF-ACK chunk before processing it. */
if (!sctp_verify_asconf(asoc,
(sctp_paramhdr_t *)addip_hdr->params,
(void *)asconf_ack->chunk_end,
&err_param))
return sctp_sf_violation_paramlen(net, ep, asoc, type, arg,
(void *)err_param, commands);
if (last_asconf) {
addip_hdr = (sctp_addiphdr_t *)last_asconf->subh.addip_hdr;
sent_serial = ntohl(addip_hdr->serial);
} else {
sent_serial = asoc->addip_serial - 1;
}
/* D0) If an endpoint receives an ASCONF-ACK that is greater than or
* equal to the next serial number to be used but no ASCONF chunk is
* outstanding the endpoint MUST ABORT the association. Note that a
* sequence number is greater than if it is no more than 2^^31-1
* larger than the current sequence number (using serial arithmetic).
*/
if (ADDIP_SERIAL_gte(rcvd_serial, sent_serial + 1) &&
!(asoc->addip_last_asconf)) {
abort = sctp_make_abort(asoc, asconf_ack,
sizeof(sctp_errhdr_t));
if (abort) {
sctp_init_cause(abort, SCTP_ERROR_ASCONF_ACK, 0);
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
SCTP_CHUNK(abort));
}
/* We are going to ABORT, so we might as well stop
* processing the rest of the chunks in the packet.
*/
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP,
SCTP_TO(SCTP_EVENT_TIMEOUT_T4_RTO));
sctp_add_cmd_sf(commands, SCTP_CMD_DISCARD_PACKET, SCTP_NULL());
sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR,
SCTP_ERROR(ECONNABORTED));
sctp_add_cmd_sf(commands, SCTP_CMD_ASSOC_FAILED,
SCTP_PERR(SCTP_ERROR_ASCONF_ACK));
SCTP_INC_STATS(net, SCTP_MIB_ABORTEDS);
SCTP_DEC_STATS(net, SCTP_MIB_CURRESTAB);
return SCTP_DISPOSITION_ABORT;
}
if ((rcvd_serial == sent_serial) && asoc->addip_last_asconf) {
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP,
SCTP_TO(SCTP_EVENT_TIMEOUT_T4_RTO));
if (!sctp_process_asconf_ack((struct sctp_association *)asoc,
asconf_ack)) {
/* Successfully processed ASCONF_ACK. We can
* release the next asconf if we have one.
*/
sctp_add_cmd_sf(commands, SCTP_CMD_SEND_NEXT_ASCONF,
SCTP_NULL());
return SCTP_DISPOSITION_CONSUME;
}
abort = sctp_make_abort(asoc, asconf_ack,
sizeof(sctp_errhdr_t));
if (abort) {
sctp_init_cause(abort, SCTP_ERROR_RSRC_LOW, 0);
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
SCTP_CHUNK(abort));
}
/* We are going to ABORT, so we might as well stop
* processing the rest of the chunks in the packet.
*/
sctp_add_cmd_sf(commands, SCTP_CMD_DISCARD_PACKET, SCTP_NULL());
sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR,
SCTP_ERROR(ECONNABORTED));
sctp_add_cmd_sf(commands, SCTP_CMD_ASSOC_FAILED,
SCTP_PERR(SCTP_ERROR_ASCONF_ACK));
SCTP_INC_STATS(net, SCTP_MIB_ABORTEDS);
SCTP_DEC_STATS(net, SCTP_MIB_CURRESTAB);
return SCTP_DISPOSITION_ABORT;
}
return SCTP_DISPOSITION_DISCARD;
} | 554 | True | 1 |
|
CVE-2014-3688 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:P | NETWORK | LOW | NONE | NONE | NONE | PARTIAL | 5.0 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2014/11/13/8', 'name': '[oss-security] 20141113 Linux kernel: SCTP issues', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1155745', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1155745', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/26b87c7881006311828bb0ab271a551a62dcceb4', 'name': 'https://github.com/torvalds/linux/commit/26b87c7881006311828bb0ab271a551a62dcceb4', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=26b87c7881006311828bb0ab271a551a62dcceb4', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=26b87c7881006311828bb0ab271a551a62dcceb4', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0062.html', 'name': 'RHSA-2015:0062', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0115.html', 'name': 'RHSA-2015:0115', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html', 'name': 'SUSE-SU-2015:0652', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://marc.info/?l=bugtraq&m=142722450701342&w=2', 'name': 'HPSBGN03285', 'refsource': 'HP', 'tags': []}, {'url': 'http://marc.info/?l=bugtraq&m=142722544401658&w=2', 'name': 'HPSBGN03282', 'refsource': 'HP', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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'cpe:2.3:o:linux:linux_kernel:3.0.39:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.45:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.53:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.60:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.61:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.27:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.12.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.17.1:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "The SCTP implementation in the Linux kernel before 3.17.4 allows remote attackers to cause a denial of service (memory consumption) by triggering a large number of chunks in an association's output queue, as demonstrated by ASCONF probes, related to net/sctp/inqueue.c and net/sctp/sm_statefuns.c."}] | 2016-08-23T02:08Z | 2014-11-30T01:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Daniel Borkmann | 2014-10-09 22:55:33+02:00 | net: sctp: fix remote memory pressure from excessive queueing
This scenario is not limited to ASCONF, just taken as one
example triggering the issue. When receiving ASCONF probes
in the form of ...
-------------- INIT[ASCONF; ASCONF_ACK] ------------->
<----------- INIT-ACK[ASCONF; ASCONF_ACK] ------------
-------------------- COOKIE-ECHO -------------------->
<-------------------- COOKIE-ACK ---------------------
---- ASCONF_a; [ASCONF_b; ...; ASCONF_n;] JUNK ------>
[...]
---- ASCONF_m; [ASCONF_o; ...; ASCONF_z;] JUNK ------>
... where ASCONF_a, ASCONF_b, ..., ASCONF_z are good-formed
ASCONFs and have increasing serial numbers, we process such
ASCONF chunk(s) marked with !end_of_packet and !singleton,
since we have not yet reached the SCTP packet end. SCTP does
only do verification on a chunk by chunk basis, as an SCTP
packet is nothing more than just a container of a stream of
chunks which it eats up one by one.
We could run into the case that we receive a packet with a
malformed tail, above marked as trailing JUNK. All previous
chunks are here goodformed, so the stack will eat up all
previous chunks up to this point. In case JUNK does not fit
into a chunk header and there are no more other chunks in
the input queue, or in case JUNK contains a garbage chunk
header, but the encoded chunk length would exceed the skb
tail, or we came here from an entirely different scenario
and the chunk has pdiscard=1 mark (without having had a flush
point), it will happen, that we will excessively queue up
the association's output queue (a correct final chunk may
then turn it into a response flood when flushing the
queue ;)): I ran a simple script with incremental ASCONF
serial numbers and could see the server side consuming
excessive amount of RAM [before/after: up to 2GB and more].
The issue at heart is that the chunk train basically ends
with !end_of_packet and !singleton markers and since commit
2e3216cd54b1 ("sctp: Follow security requirement of responding
with 1 packet") therefore preventing an output queue flush
point in sctp_do_sm() -> sctp_cmd_interpreter() on the input
chunk (chunk = event_arg) even though local_cork is set,
but its precedence has changed since then. In the normal
case, the last chunk with end_of_packet=1 would trigger the
queue flush to accommodate possible outgoing bundling.
In the input queue, sctp_inq_pop() seems to do the right thing
in terms of discarding invalid chunks. So, above JUNK will
not enter the state machine and instead be released and exit
the sctp_assoc_bh_rcv() chunk processing loop. It's simply
the flush point being missing at loop exit. Adding a try-flush
approach on the output queue might not work as the underlying
infrastructure might be long gone at this point due to the
side-effect interpreter run.
One possibility, albeit a bit of a kludge, would be to defer
invalid chunk freeing into the state machine in order to
possibly trigger packet discards and thus indirectly a queue
flush on error. It would surely be better to discard chunks
as in the current, perhaps better controlled environment, but
going back and forth, it's simply architecturally not possible.
I tried various trailing JUNK attack cases and it seems to
look good now.
Joint work with Vlad Yasevich.
Fixes: 2e3216cd54b1 ("sctp: Follow security requirement of responding with 1 packet")
Signed-off-by: Daniel Borkmann <[email protected]>
Signed-off-by: Vlad Yasevich <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 26b87c7881006311828bb0ab271a551a62dcceb4 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | sctp_inq_pop | sctp_inq_pop( struct sctp_inq * queue) | ['queue'] | struct sctp_chunk *sctp_inq_pop(struct sctp_inq *queue)
{
struct sctp_chunk *chunk;
sctp_chunkhdr_t *ch = NULL;
/* The assumption is that we are safe to process the chunks
* at this time.
*/
if ((chunk = queue->in_progress)) {
/* There is a packet that we have been working on.
* Any post processing work to do before we move on?
*/
if (chunk->singleton ||
chunk->end_of_packet ||
chunk->pdiscard) {
sctp_chunk_free(chunk);
chunk = queue->in_progress = NULL;
} else {
/* Nothing to do. Next chunk in the packet, please. */
ch = (sctp_chunkhdr_t *) chunk->chunk_end;
/* Force chunk->skb->data to chunk->chunk_end. */
skb_pull(chunk->skb,
chunk->chunk_end - chunk->skb->data);
/* Verify that we have at least chunk headers
* worth of buffer left.
*/
if (skb_headlen(chunk->skb) < sizeof(sctp_chunkhdr_t)) {
sctp_chunk_free(chunk);
chunk = queue->in_progress = NULL;
}
}
}
/* Do we need to take the next packet out of the queue to process? */
if (!chunk) {
struct list_head *entry;
/* Is the queue empty? */
if (list_empty(&queue->in_chunk_list))
return NULL;
entry = queue->in_chunk_list.next;
chunk = queue->in_progress =
list_entry(entry, struct sctp_chunk, list);
list_del_init(entry);
/* This is the first chunk in the packet. */
chunk->singleton = 1;
ch = (sctp_chunkhdr_t *) chunk->skb->data;
chunk->data_accepted = 0;
}
chunk->chunk_hdr = ch;
chunk->chunk_end = ((__u8 *)ch) + WORD_ROUND(ntohs(ch->length));
/* In the unlikely case of an IP reassembly, the skb could be
* non-linear. If so, update chunk_end so that it doesn't go past
* the skb->tail.
*/
if (unlikely(skb_is_nonlinear(chunk->skb))) {
if (chunk->chunk_end > skb_tail_pointer(chunk->skb))
chunk->chunk_end = skb_tail_pointer(chunk->skb);
}
skb_pull(chunk->skb, sizeof(sctp_chunkhdr_t));
chunk->subh.v = NULL; /* Subheader is no longer valid. */
if (chunk->chunk_end < skb_tail_pointer(chunk->skb)) {
/* This is not a singleton */
chunk->singleton = 0;
} else if (chunk->chunk_end > skb_tail_pointer(chunk->skb)) {
/* RFC 2960, Section 6.10 Bundling
*
* Partial chunks MUST NOT be placed in an SCTP packet.
* If the receiver detects a partial chunk, it MUST drop
* the chunk.
*
* Since the end of the chunk is past the end of our buffer
* (which contains the whole packet, we can freely discard
* the whole packet.
*/
sctp_chunk_free(chunk);
chunk = queue->in_progress = NULL;
return NULL;
} else {
/* We are at the end of the packet, so mark the chunk
* in case we need to send a SACK.
*/
chunk->end_of_packet = 1;
}
pr_debug("+++sctp_inq_pop+++ chunk:%p[%s], length:%d, skb->len:%d\n",
chunk, sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)),
ntohs(chunk->chunk_hdr->length), chunk->skb->len);
return chunk;
} | 383 | True | 1 |
||
CVE-2014-3690 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/d974baa398f34393db76be45f7d4d04fbdbb4a0a', 'name': 'https://github.com/torvalds/linux/commit/d974baa398f34393db76be45f7d4d04fbdbb4a0a', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d974baa398f34393db76be45f7d4d04fbdbb4a0a', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d974baa398f34393db76be45f7d4d04fbdbb4a0a', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/21/4', 'name': '[oss-security] 20141021 CVE-2014-3690: KVM DoS triggerable by malicious host userspace', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1153322', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1153322', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.2', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/29/7', 'name': '[oss-security] 20141029 Re: CVE-2014-3690: KVM DoS triggerable by malicious host userspace', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2421-1', 'name': 'USN-2421-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2419-1', 'name': 'USN-2419-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2420-1', 'name': 'USN-2420-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70691', 'name': '70691', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://secunia.com/advisories/60174', 'name': '60174', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00035.html', 'name': 'SUSE-SU-2015:0178', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': ['Broken Link']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0782.html', 'name': 'RHSA-2015:0782', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-400'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_real_time_extension:11:sp3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 3.17.2 on Intel processors does not ensure that the value in the CR4 control register remains the same after a VM entry, which allows host OS users to kill arbitrary processes or cause a denial of service (system disruption) by leveraging /dev/kvm access, as demonstrated by PR_SET_TSC prctl calls within a modified copy of QEMU.'}] | 2020-08-13T20:34Z | 2014-11-10T11:55Z | Uncontrolled Resource Consumption | The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. |
Limited resources include memory, file system storage, database connection pool entries, and CPU. If an attacker can trigger the allocation of these limited resources, but the number or size of the resources is not controlled, then the attacker could cause a denial of service that consumes all available resources. This would prevent valid users from accessing the software, and it could potentially have an impact on the surrounding environment. For example, a memory exhaustion attack against an application could slow down the application as well as its host operating system.
There are at least three distinct scenarios which can commonly lead to resource exhaustion:
Lack of throttling for the number of allocated resources
Losing all references to a resource before reaching the shutdown stage
Not closing/returning a resource after processing
Resource exhaustion problems are often result due to an incorrect implementation of the following situations:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for releasing the resource.
| https://cwe.mitre.org/data/definitions/400.html | 0 | Andy Lutomirski | 2014-10-08 09:02:13-07:00 | x86,kvm,vmx: Preserve CR4 across VM entry
CR4 isn't constant; at least the TSD and PCE bits can vary.
TBH, treating CR0 and CR3 as constant scares me a bit, too, but it looks
like it's correct.
This adds a branch and a read from cr4 to each vm entry. Because it is
extremely likely that consecutive entries into the same vcpu will have
the same host cr4 value, this fixes up the vmcs instead of restoring cr4
after the fact. A subsequent patch will add a kernel-wide cr4 shadow,
reducing the overhead in the common case to just two memory reads and a
branch.
Signed-off-by: Andy Lutomirski <[email protected]>
Acked-by: Paolo Bonzini <[email protected]>
Cc: [email protected]
Cc: Petr Matousek <[email protected]>
Cc: Gleb Natapov <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]> | d974baa398f34393db76be45f7d4d04fbdbb4a0a | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | vmx_set_constant_host_state | vmx_set_constant_host_state( struct vcpu_vmx * vmx) | ['vmx'] | static void vmx_set_constant_host_state(struct vcpu_vmx *vmx)
{
u32 low32, high32;
unsigned long tmpl;
struct desc_ptr dt;
vmcs_writel(HOST_CR0, read_cr0() & ~X86_CR0_TS); /* 22.2.3 */
vmcs_writel(HOST_CR4, read_cr4()); /* 22.2.3, 22.2.5 */
vmcs_writel(HOST_CR3, read_cr3()); /* 22.2.3 FIXME: shadow tables */
vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS); /* 22.2.4 */
#ifdef CONFIG_X86_64
/*
* Load null selectors, so we can avoid reloading them in
* __vmx_load_host_state(), in case userspace uses the null selectors
* too (the expected case).
*/
vmcs_write16(HOST_DS_SELECTOR, 0);
vmcs_write16(HOST_ES_SELECTOR, 0);
#else
vmcs_write16(HOST_DS_SELECTOR, __KERNEL_DS); /* 22.2.4 */
vmcs_write16(HOST_ES_SELECTOR, __KERNEL_DS); /* 22.2.4 */
#endif
vmcs_write16(HOST_SS_SELECTOR, __KERNEL_DS); /* 22.2.4 */
vmcs_write16(HOST_TR_SELECTOR, GDT_ENTRY_TSS*8); /* 22.2.4 */
native_store_idt(&dt);
vmcs_writel(HOST_IDTR_BASE, dt.address); /* 22.2.4 */
vmx->host_idt_base = dt.address;
vmcs_writel(HOST_RIP, vmx_return); /* 22.2.5 */
rdmsr(MSR_IA32_SYSENTER_CS, low32, high32);
vmcs_write32(HOST_IA32_SYSENTER_CS, low32);
rdmsrl(MSR_IA32_SYSENTER_EIP, tmpl);
vmcs_writel(HOST_IA32_SYSENTER_EIP, tmpl); /* 22.2.3 */
if (vmcs_config.vmexit_ctrl & VM_EXIT_LOAD_IA32_PAT) {
rdmsr(MSR_IA32_CR_PAT, low32, high32);
vmcs_write64(HOST_IA32_PAT, low32 | ((u64) high32 << 32));
}
} | 198 | True | 1 |
|
CVE-2014-3690 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/d974baa398f34393db76be45f7d4d04fbdbb4a0a', 'name': 'https://github.com/torvalds/linux/commit/d974baa398f34393db76be45f7d4d04fbdbb4a0a', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d974baa398f34393db76be45f7d4d04fbdbb4a0a', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d974baa398f34393db76be45f7d4d04fbdbb4a0a', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/21/4', 'name': '[oss-security] 20141021 CVE-2014-3690: KVM DoS triggerable by malicious host userspace', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1153322', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1153322', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.2', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/29/7', 'name': '[oss-security] 20141029 Re: CVE-2014-3690: KVM DoS triggerable by malicious host userspace', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2421-1', 'name': 'USN-2421-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2419-1', 'name': 'USN-2419-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2420-1', 'name': 'USN-2420-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70691', 'name': '70691', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://secunia.com/advisories/60174', 'name': '60174', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00035.html', 'name': 'SUSE-SU-2015:0178', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': ['Broken Link']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0782.html', 'name': 'RHSA-2015:0782', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-400'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_real_time_extension:11:sp3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:novell:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 3.17.2 on Intel processors does not ensure that the value in the CR4 control register remains the same after a VM entry, which allows host OS users to kill arbitrary processes or cause a denial of service (system disruption) by leveraging /dev/kvm access, as demonstrated by PR_SET_TSC prctl calls within a modified copy of QEMU.'}] | 2020-08-13T20:34Z | 2014-11-10T11:55Z | Uncontrolled Resource Consumption | The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. |
Limited resources include memory, file system storage, database connection pool entries, and CPU. If an attacker can trigger the allocation of these limited resources, but the number or size of the resources is not controlled, then the attacker could cause a denial of service that consumes all available resources. This would prevent valid users from accessing the software, and it could potentially have an impact on the surrounding environment. For example, a memory exhaustion attack against an application could slow down the application as well as its host operating system.
There are at least three distinct scenarios which can commonly lead to resource exhaustion:
Lack of throttling for the number of allocated resources
Losing all references to a resource before reaching the shutdown stage
Not closing/returning a resource after processing
Resource exhaustion problems are often result due to an incorrect implementation of the following situations:
Error conditions and other exceptional circumstances.
Confusion over which part of the program is responsible for releasing the resource.
| https://cwe.mitre.org/data/definitions/400.html | 0 | Andy Lutomirski | 2014-10-08 09:02:13-07:00 | x86,kvm,vmx: Preserve CR4 across VM entry
CR4 isn't constant; at least the TSD and PCE bits can vary.
TBH, treating CR0 and CR3 as constant scares me a bit, too, but it looks
like it's correct.
This adds a branch and a read from cr4 to each vm entry. Because it is
extremely likely that consecutive entries into the same vcpu will have
the same host cr4 value, this fixes up the vmcs instead of restoring cr4
after the fact. A subsequent patch will add a kernel-wide cr4 shadow,
reducing the overhead in the common case to just two memory reads and a
branch.
Signed-off-by: Andy Lutomirski <[email protected]>
Acked-by: Paolo Bonzini <[email protected]>
Cc: [email protected]
Cc: Petr Matousek <[email protected]>
Cc: Gleb Natapov <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]> | d974baa398f34393db76be45f7d4d04fbdbb4a0a | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | vmx_vcpu_run | vmx_vcpu_run( struct kvm_vcpu * vcpu) | ['vcpu'] | static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
unsigned long debugctlmsr;
/* Record the guest's net vcpu time for enforced NMI injections. */
if (unlikely(!cpu_has_virtual_nmis() && vmx->soft_vnmi_blocked))
vmx->entry_time = ktime_get();
/* Don't enter VMX if guest state is invalid, let the exit handler
start emulation until we arrive back to a valid state */
if (vmx->emulation_required)
return;
if (vmx->ple_window_dirty) {
vmx->ple_window_dirty = false;
vmcs_write32(PLE_WINDOW, vmx->ple_window);
}
if (vmx->nested.sync_shadow_vmcs) {
copy_vmcs12_to_shadow(vmx);
vmx->nested.sync_shadow_vmcs = false;
}
if (test_bit(VCPU_REGS_RSP, (unsigned long *)&vcpu->arch.regs_dirty))
vmcs_writel(GUEST_RSP, vcpu->arch.regs[VCPU_REGS_RSP]);
if (test_bit(VCPU_REGS_RIP, (unsigned long *)&vcpu->arch.regs_dirty))
vmcs_writel(GUEST_RIP, vcpu->arch.regs[VCPU_REGS_RIP]);
/* When single-stepping over STI and MOV SS, we must clear the
* corresponding interruptibility bits in the guest state. Otherwise
* vmentry fails as it then expects bit 14 (BS) in pending debug
* exceptions being set, but that's not correct for the guest debugging
* case. */
if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
vmx_set_interrupt_shadow(vcpu, 0);
atomic_switch_perf_msrs(vmx);
debugctlmsr = get_debugctlmsr();
vmx->__launched = vmx->loaded_vmcs->launched;
asm(
/* Store host registers */
"push %%" _ASM_DX "; push %%" _ASM_BP ";"
"push %%" _ASM_CX " \n\t" /* placeholder for guest rcx */
"push %%" _ASM_CX " \n\t"
"cmp %%" _ASM_SP ", %c[host_rsp](%0) \n\t"
"je 1f \n\t"
"mov %%" _ASM_SP ", %c[host_rsp](%0) \n\t"
__ex(ASM_VMX_VMWRITE_RSP_RDX) "\n\t"
"1: \n\t"
/* Reload cr2 if changed */
"mov %c[cr2](%0), %%" _ASM_AX " \n\t"
"mov %%cr2, %%" _ASM_DX " \n\t"
"cmp %%" _ASM_AX ", %%" _ASM_DX " \n\t"
"je 2f \n\t"
"mov %%" _ASM_AX", %%cr2 \n\t"
"2: \n\t"
/* Check if vmlaunch of vmresume is needed */
"cmpl $0, %c[launched](%0) \n\t"
/* Load guest registers. Don't clobber flags. */
"mov %c[rax](%0), %%" _ASM_AX " \n\t"
"mov %c[rbx](%0), %%" _ASM_BX " \n\t"
"mov %c[rdx](%0), %%" _ASM_DX " \n\t"
"mov %c[rsi](%0), %%" _ASM_SI " \n\t"
"mov %c[rdi](%0), %%" _ASM_DI " \n\t"
"mov %c[rbp](%0), %%" _ASM_BP " \n\t"
#ifdef CONFIG_X86_64
"mov %c[r8](%0), %%r8 \n\t"
"mov %c[r9](%0), %%r9 \n\t"
"mov %c[r10](%0), %%r10 \n\t"
"mov %c[r11](%0), %%r11 \n\t"
"mov %c[r12](%0), %%r12 \n\t"
"mov %c[r13](%0), %%r13 \n\t"
"mov %c[r14](%0), %%r14 \n\t"
"mov %c[r15](%0), %%r15 \n\t"
#endif
"mov %c[rcx](%0), %%" _ASM_CX " \n\t" /* kills %0 (ecx) */
/* Enter guest mode */
"jne 1f \n\t"
__ex(ASM_VMX_VMLAUNCH) "\n\t"
"jmp 2f \n\t"
"1: " __ex(ASM_VMX_VMRESUME) "\n\t"
"2: "
/* Save guest registers, load host registers, keep flags */
"mov %0, %c[wordsize](%%" _ASM_SP ") \n\t"
"pop %0 \n\t"
"mov %%" _ASM_AX ", %c[rax](%0) \n\t"
"mov %%" _ASM_BX ", %c[rbx](%0) \n\t"
__ASM_SIZE(pop) " %c[rcx](%0) \n\t"
"mov %%" _ASM_DX ", %c[rdx](%0) \n\t"
"mov %%" _ASM_SI ", %c[rsi](%0) \n\t"
"mov %%" _ASM_DI ", %c[rdi](%0) \n\t"
"mov %%" _ASM_BP ", %c[rbp](%0) \n\t"
#ifdef CONFIG_X86_64
"mov %%r8, %c[r8](%0) \n\t"
"mov %%r9, %c[r9](%0) \n\t"
"mov %%r10, %c[r10](%0) \n\t"
"mov %%r11, %c[r11](%0) \n\t"
"mov %%r12, %c[r12](%0) \n\t"
"mov %%r13, %c[r13](%0) \n\t"
"mov %%r14, %c[r14](%0) \n\t"
"mov %%r15, %c[r15](%0) \n\t"
#endif
"mov %%cr2, %%" _ASM_AX " \n\t"
"mov %%" _ASM_AX ", %c[cr2](%0) \n\t"
"pop %%" _ASM_BP "; pop %%" _ASM_DX " \n\t"
"setbe %c[fail](%0) \n\t"
".pushsection .rodata \n\t"
".global vmx_return \n\t"
"vmx_return: " _ASM_PTR " 2b \n\t"
".popsection"
: : "c"(vmx), "d"((unsigned long)HOST_RSP),
[launched]"i"(offsetof(struct vcpu_vmx, __launched)),
[fail]"i"(offsetof(struct vcpu_vmx, fail)),
[host_rsp]"i"(offsetof(struct vcpu_vmx, host_rsp)),
[rax]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RAX])),
[rbx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBX])),
[rcx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RCX])),
[rdx]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDX])),
[rsi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RSI])),
[rdi]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RDI])),
[rbp]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_RBP])),
#ifdef CONFIG_X86_64
[r8]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R8])),
[r9]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R9])),
[r10]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R10])),
[r11]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R11])),
[r12]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R12])),
[r13]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R13])),
[r14]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R14])),
[r15]"i"(offsetof(struct vcpu_vmx, vcpu.arch.regs[VCPU_REGS_R15])),
#endif
[cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)),
[wordsize]"i"(sizeof(ulong))
: "cc", "memory"
#ifdef CONFIG_X86_64
, "rax", "rbx", "rdi", "rsi"
, "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
#else
, "eax", "ebx", "edi", "esi"
#endif
);
/* MSR_IA32_DEBUGCTLMSR is zeroed on vmexit. Restore it if needed */
if (debugctlmsr)
update_debugctlmsr(debugctlmsr);
#ifndef CONFIG_X86_64
/*
* The sysexit path does not restore ds/es, so we must set them to
* a reasonable value ourselves.
*
* We can't defer this to vmx_load_host_state() since that function
* may be executed in interrupt context, which saves and restore segments
* around it, nullifying its effect.
*/
loadsegment(ds, __USER_DS);
loadsegment(es, __USER_DS);
#endif
vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP)
| (1 << VCPU_EXREG_RFLAGS)
| (1 << VCPU_EXREG_PDPTR)
| (1 << VCPU_EXREG_SEGMENTS)
| (1 << VCPU_EXREG_CR3));
vcpu->arch.regs_dirty = 0;
vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
vmx->loaded_vmcs->launched = 1;
vmx->exit_reason = vmcs_read32(VM_EXIT_REASON);
trace_kvm_exit(vmx->exit_reason, vcpu, KVM_ISA_VMX);
/*
* the KVM_REQ_EVENT optimization bit is only on for one entry, and if
* we did not inject a still-pending event to L1 now because of
* nested_run_pending, we need to re-enable this bit.
*/
if (vmx->nested.nested_run_pending)
kvm_make_request(KVM_REQ_EVENT, vcpu);
vmx->nested.nested_run_pending = 0;
vmx_complete_atomic_exit(vmx);
vmx_recover_nmi_blocking(vmx);
vmx_complete_interrupts(vmx);
} | 935 | True | 1 |
|
CVE-2014-3610 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=854e8bb1aa06c578c2c9145fa6bfe3680ef63b23', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=854e8bb1aa06c578c2c9145fa6bfe3680ef63b23', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144883', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144883', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/854e8bb1aa06c578c2c9145fa6bfe3680ef63b23', 'name': 'https://github.com/torvalds/linux/commit/854e8bb1aa06c578c2c9145fa6bfe3680ef63b23', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2491-1', 'name': 'USN-2491-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70742', 'name': '70742', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0869.html', 'name': 'RHSA-2015:0869', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The WRMSR processing functionality in the KVM subsystem in the Linux kernel through 3.17.2 does not properly handle the writing of a non-canonical address to a model-specific register, which allows guest OS users to cause a denial of service (host OS crash) by leveraging guest OS privileges, related to the wrmsr_interception function in arch/x86/kvm/svm.c and the handle_wrmsr function in arch/x86/kvm/vmx.c.'}] | 2020-08-13T17:39Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-16 03:24:05+03:00 | KVM: x86: Check non-canonical addresses upon WRMSR
Upon WRMSR, the CPU should inject #GP if a non-canonical value (address) is
written to certain MSRs. The behavior is "almost" identical for AMD and Intel
(ignoring MSRs that are not implemented in either architecture since they would
anyhow #GP). However, IA32_SYSENTER_ESP and IA32_SYSENTER_EIP cause #GP if
non-canonical address is written on Intel but not on AMD (which ignores the top
32-bits).
Accordingly, this patch injects a #GP on the MSRs which behave identically on
Intel and AMD. To eliminate the differences between the architecutres, the
value which is written to IA32_SYSENTER_ESP and IA32_SYSENTER_EIP is turned to
canonical value before writing instead of injecting a #GP.
Some references from Intel and AMD manuals:
According to Intel SDM description of WRMSR instruction #GP is expected on
WRMSR "If the source register contains a non-canonical address and ECX
specifies one of the following MSRs: IA32_DS_AREA, IA32_FS_BASE, IA32_GS_BASE,
IA32_KERNEL_GS_BASE, IA32_LSTAR, IA32_SYSENTER_EIP, IA32_SYSENTER_ESP."
According to AMD manual instruction manual:
LSTAR/CSTAR (SYSCALL): "The WRMSR instruction loads the target RIP into the
LSTAR and CSTAR registers. If an RIP written by WRMSR is not in canonical
form, a general-protection exception (#GP) occurs."
IA32_GS_BASE and IA32_FS_BASE (WRFSBASE/WRGSBASE): "The address written to the
base field must be in canonical form or a #GP fault will occur."
IA32_KERNEL_GS_BASE (SWAPGS): "The address stored in the KernelGSbase MSR must
be in canonical form."
This patch fixes CVE-2014-3610.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 854e8bb1aa06c578c2c9145fa6bfe3680ef63b23 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | wrmsr_interception | wrmsr_interception( struct vcpu_svm * svm) | ['svm'] | static int wrmsr_interception(struct vcpu_svm *svm)
{
struct msr_data msr;
u32 ecx = svm->vcpu.arch.regs[VCPU_REGS_RCX];
u64 data = (svm->vcpu.arch.regs[VCPU_REGS_RAX] & -1u)
| ((u64)(svm->vcpu.arch.regs[VCPU_REGS_RDX] & -1u) << 32);
msr.data = data;
msr.index = ecx;
msr.host_initiated = false;
svm->next_rip = kvm_rip_read(&svm->vcpu) + 2;
if (svm_set_msr(&svm->vcpu, &msr)) {
trace_kvm_msr_write_ex(ecx, data);
kvm_inject_gp(&svm->vcpu, 0);
} else {
trace_kvm_msr_write(ecx, data);
skip_emulated_instruction(&svm->vcpu);
}
return 1;
} | 155 | True | 1 |
|
CVE-2014-3610 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=854e8bb1aa06c578c2c9145fa6bfe3680ef63b23', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=854e8bb1aa06c578c2c9145fa6bfe3680ef63b23', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144883', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144883', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/854e8bb1aa06c578c2c9145fa6bfe3680ef63b23', 'name': 'https://github.com/torvalds/linux/commit/854e8bb1aa06c578c2c9145fa6bfe3680ef63b23', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2491-1', 'name': 'USN-2491-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70742', 'name': '70742', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0869.html', 'name': 'RHSA-2015:0869', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The WRMSR processing functionality in the KVM subsystem in the Linux kernel through 3.17.2 does not properly handle the writing of a non-canonical address to a model-specific register, which allows guest OS users to cause a denial of service (host OS crash) by leveraging guest OS privileges, related to the wrmsr_interception function in arch/x86/kvm/svm.c and the handle_wrmsr function in arch/x86/kvm/vmx.c.'}] | 2020-08-13T17:39Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-16 03:24:05+03:00 | KVM: x86: Check non-canonical addresses upon WRMSR
Upon WRMSR, the CPU should inject #GP if a non-canonical value (address) is
written to certain MSRs. The behavior is "almost" identical for AMD and Intel
(ignoring MSRs that are not implemented in either architecture since they would
anyhow #GP). However, IA32_SYSENTER_ESP and IA32_SYSENTER_EIP cause #GP if
non-canonical address is written on Intel but not on AMD (which ignores the top
32-bits).
Accordingly, this patch injects a #GP on the MSRs which behave identically on
Intel and AMD. To eliminate the differences between the architecutres, the
value which is written to IA32_SYSENTER_ESP and IA32_SYSENTER_EIP is turned to
canonical value before writing instead of injecting a #GP.
Some references from Intel and AMD manuals:
According to Intel SDM description of WRMSR instruction #GP is expected on
WRMSR "If the source register contains a non-canonical address and ECX
specifies one of the following MSRs: IA32_DS_AREA, IA32_FS_BASE, IA32_GS_BASE,
IA32_KERNEL_GS_BASE, IA32_LSTAR, IA32_SYSENTER_EIP, IA32_SYSENTER_ESP."
According to AMD manual instruction manual:
LSTAR/CSTAR (SYSCALL): "The WRMSR instruction loads the target RIP into the
LSTAR and CSTAR registers. If an RIP written by WRMSR is not in canonical
form, a general-protection exception (#GP) occurs."
IA32_GS_BASE and IA32_FS_BASE (WRFSBASE/WRGSBASE): "The address written to the
base field must be in canonical form or a #GP fault will occur."
IA32_KERNEL_GS_BASE (SWAPGS): "The address stored in the KernelGSbase MSR must
be in canonical form."
This patch fixes CVE-2014-3610.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 854e8bb1aa06c578c2c9145fa6bfe3680ef63b23 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | handle_wrmsr | handle_wrmsr( struct kvm_vcpu * vcpu) | ['vcpu'] | static int handle_wrmsr(struct kvm_vcpu *vcpu)
{
struct msr_data msr;
u32 ecx = vcpu->arch.regs[VCPU_REGS_RCX];
u64 data = (vcpu->arch.regs[VCPU_REGS_RAX] & -1u)
| ((u64)(vcpu->arch.regs[VCPU_REGS_RDX] & -1u) << 32);
msr.data = data;
msr.index = ecx;
msr.host_initiated = false;
if (vmx_set_msr(vcpu, &msr) != 0) {
trace_kvm_msr_write_ex(ecx, data);
kvm_inject_gp(vcpu, 0);
return 1;
}
trace_kvm_msr_write(ecx, data);
skip_emulated_instruction(vcpu);
return 1;
} | 128 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | assign_eip_near | assign_eip_near( struct x86_emulate_ctxt * ctxt , ulong dst) | ['ctxt', 'dst'] | static inline void assign_eip_near(struct x86_emulate_ctxt *ctxt, ulong dst)
{
switch (ctxt->op_bytes) {
case 2:
ctxt->_eip = (u16)dst;
break;
case 4:
ctxt->_eip = (u32)dst;
break;
case 8:
ctxt->_eip = dst;
break;
default:
WARN(1, "unsupported eip assignment size\n");
}
} | 68 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_call | em_call( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_call(struct x86_emulate_ctxt *ctxt)
{
long rel = ctxt->src.val;
ctxt->src.val = (unsigned long)ctxt->_eip;
jmp_rel(ctxt, rel);
return em_push(ctxt);
} | 45 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_grp45 | em_grp45( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_grp45(struct x86_emulate_ctxt *ctxt)
{
int rc = X86EMUL_CONTINUE;
switch (ctxt->modrm_reg) {
case 2: /* call near abs */ {
long int old_eip;
old_eip = ctxt->_eip;
ctxt->_eip = ctxt->src.val;
ctxt->src.val = old_eip;
rc = em_push(ctxt);
break;
}
case 4: /* jmp abs */
ctxt->_eip = ctxt->src.val;
break;
case 5: /* jmp far */
rc = em_jmp_far(ctxt);
break;
case 6: /* push */
rc = em_push(ctxt);
break;
}
return rc;
} | 106 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_jcxz | em_jcxz( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_jcxz(struct x86_emulate_ctxt *ctxt)
{
if (address_mask(ctxt, reg_read(ctxt, VCPU_REGS_RCX)) == 0)
jmp_rel(ctxt, ctxt->src.val);
return X86EMUL_CONTINUE;
} | 39 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_loop | em_loop( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_loop(struct x86_emulate_ctxt *ctxt)
{
register_address_increment(ctxt, reg_rmw(ctxt, VCPU_REGS_RCX), -1);
if ((address_mask(ctxt, reg_read(ctxt, VCPU_REGS_RCX)) != 0) &&
(ctxt->b == 0xe2 || test_cc(ctxt->b ^ 0x5, ctxt->eflags)))
jmp_rel(ctxt, ctxt->src.val);
return X86EMUL_CONTINUE;
} | 77 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_ret | em_ret( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_ret(struct x86_emulate_ctxt *ctxt)
{
ctxt->dst.type = OP_REG;
ctxt->dst.addr.reg = &ctxt->_eip;
ctxt->dst.bytes = ctxt->op_bytes;
return em_pop(ctxt);
} | 46 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_ret_near_imm | em_ret_near_imm( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_ret_near_imm(struct x86_emulate_ctxt *ctxt)
{
int rc;
ctxt->dst.type = OP_REG;
ctxt->dst.addr.reg = &ctxt->_eip;
ctxt->dst.bytes = ctxt->op_bytes;
rc = emulate_pop(ctxt, &ctxt->dst.val, ctxt->op_bytes);
if (rc != X86EMUL_CONTINUE)
return rc;
rsp_increment(ctxt, ctxt->src.val);
return X86EMUL_CONTINUE;
} | 84 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_sysexit | em_sysexit( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_sysexit(struct x86_emulate_ctxt *ctxt)
{
const struct x86_emulate_ops *ops = ctxt->ops;
struct desc_struct cs, ss;
u64 msr_data;
int usermode;
u16 cs_sel = 0, ss_sel = 0;
/* inject #GP if in real mode or Virtual 8086 mode */
if (ctxt->mode == X86EMUL_MODE_REAL ||
ctxt->mode == X86EMUL_MODE_VM86)
return emulate_gp(ctxt, 0);
setup_syscalls_segments(ctxt, &cs, &ss);
if ((ctxt->rex_prefix & 0x8) != 0x0)
usermode = X86EMUL_MODE_PROT64;
else
usermode = X86EMUL_MODE_PROT32;
cs.dpl = 3;
ss.dpl = 3;
ops->get_msr(ctxt, MSR_IA32_SYSENTER_CS, &msr_data);
switch (usermode) {
case X86EMUL_MODE_PROT32:
cs_sel = (u16)(msr_data + 16);
if ((msr_data & 0xfffc) == 0x0)
return emulate_gp(ctxt, 0);
ss_sel = (u16)(msr_data + 24);
break;
case X86EMUL_MODE_PROT64:
cs_sel = (u16)(msr_data + 32);
if (msr_data == 0x0)
return emulate_gp(ctxt, 0);
ss_sel = cs_sel + 8;
cs.d = 0;
cs.l = 1;
break;
}
cs_sel |= SELECTOR_RPL_MASK;
ss_sel |= SELECTOR_RPL_MASK;
ops->set_segment(ctxt, cs_sel, &cs, 0, VCPU_SREG_CS);
ops->set_segment(ctxt, ss_sel, &ss, 0, VCPU_SREG_SS);
ctxt->_eip = reg_read(ctxt, VCPU_REGS_RDX);
*reg_write(ctxt, VCPU_REGS_RSP) = reg_read(ctxt, VCPU_REGS_RCX);
return X86EMUL_CONTINUE;
} | 286 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | jmp_rel | jmp_rel( struct x86_emulate_ctxt * ctxt , int rel) | ['ctxt', 'rel'] | static inline void jmp_rel(struct x86_emulate_ctxt *ctxt, int rel)
{
assign_eip_near(ctxt, ctxt->_eip + rel);
} | 23 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:38+03:00 | KVM: x86: Emulator fixes for eip canonical checks on near branches
Before changing rip (during jmp, call, ret, etc.) the target should be asserted
to be canonical one, as real CPUs do. During sysret, both target rsp and rip
should be canonical. If any of these values is noncanonical, a #GP exception
should occur. The exception to this rule are syscall and sysenter instructions
in which the assigned rip is checked during the assignment to the relevant
MSRs.
This patch fixes the emulator to behave as real CPUs do for near branches.
Far branches are handled by the next patch.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 234f3ce485d54017f15cf5e0699cff4100121601 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | x86_emulate_insn | x86_emulate_insn( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
{
const struct x86_emulate_ops *ops = ctxt->ops;
int rc = X86EMUL_CONTINUE;
int saved_dst_type = ctxt->dst.type;
ctxt->mem_read.pos = 0;
/* LOCK prefix is allowed only with some instructions */
if (ctxt->lock_prefix && (!(ctxt->d & Lock) || ctxt->dst.type != OP_MEM)) {
rc = emulate_ud(ctxt);
goto done;
}
if ((ctxt->d & SrcMask) == SrcMemFAddr && ctxt->src.type != OP_MEM) {
rc = emulate_ud(ctxt);
goto done;
}
if (unlikely(ctxt->d &
(No64|Undefined|Sse|Mmx|Intercept|CheckPerm|Priv|Prot|String))) {
if ((ctxt->mode == X86EMUL_MODE_PROT64 && (ctxt->d & No64)) ||
(ctxt->d & Undefined)) {
rc = emulate_ud(ctxt);
goto done;
}
if (((ctxt->d & (Sse|Mmx)) && ((ops->get_cr(ctxt, 0) & X86_CR0_EM)))
|| ((ctxt->d & Sse) && !(ops->get_cr(ctxt, 4) & X86_CR4_OSFXSR))) {
rc = emulate_ud(ctxt);
goto done;
}
if ((ctxt->d & (Sse|Mmx)) && (ops->get_cr(ctxt, 0) & X86_CR0_TS)) {
rc = emulate_nm(ctxt);
goto done;
}
if (ctxt->d & Mmx) {
rc = flush_pending_x87_faults(ctxt);
if (rc != X86EMUL_CONTINUE)
goto done;
/*
* Now that we know the fpu is exception safe, we can fetch
* operands from it.
*/
fetch_possible_mmx_operand(ctxt, &ctxt->src);
fetch_possible_mmx_operand(ctxt, &ctxt->src2);
if (!(ctxt->d & Mov))
fetch_possible_mmx_operand(ctxt, &ctxt->dst);
}
if (unlikely(ctxt->guest_mode) && (ctxt->d & Intercept)) {
rc = emulator_check_intercept(ctxt, ctxt->intercept,
X86_ICPT_PRE_EXCEPT);
if (rc != X86EMUL_CONTINUE)
goto done;
}
/* Privileged instruction can be executed only in CPL=0 */
if ((ctxt->d & Priv) && ops->cpl(ctxt)) {
if (ctxt->d & PrivUD)
rc = emulate_ud(ctxt);
else
rc = emulate_gp(ctxt, 0);
goto done;
}
/* Instruction can only be executed in protected mode */
if ((ctxt->d & Prot) && ctxt->mode < X86EMUL_MODE_PROT16) {
rc = emulate_ud(ctxt);
goto done;
}
/* Do instruction specific permission checks */
if (ctxt->d & CheckPerm) {
rc = ctxt->check_perm(ctxt);
if (rc != X86EMUL_CONTINUE)
goto done;
}
if (unlikely(ctxt->guest_mode) && (ctxt->d & Intercept)) {
rc = emulator_check_intercept(ctxt, ctxt->intercept,
X86_ICPT_POST_EXCEPT);
if (rc != X86EMUL_CONTINUE)
goto done;
}
if (ctxt->rep_prefix && (ctxt->d & String)) {
/* All REP prefixes have the same first termination condition */
if (address_mask(ctxt, reg_read(ctxt, VCPU_REGS_RCX)) == 0) {
ctxt->eip = ctxt->_eip;
ctxt->eflags &= ~EFLG_RF;
goto done;
}
}
}
if ((ctxt->src.type == OP_MEM) && !(ctxt->d & NoAccess)) {
rc = segmented_read(ctxt, ctxt->src.addr.mem,
ctxt->src.valptr, ctxt->src.bytes);
if (rc != X86EMUL_CONTINUE)
goto done;
ctxt->src.orig_val64 = ctxt->src.val64;
}
if (ctxt->src2.type == OP_MEM) {
rc = segmented_read(ctxt, ctxt->src2.addr.mem,
&ctxt->src2.val, ctxt->src2.bytes);
if (rc != X86EMUL_CONTINUE)
goto done;
}
if ((ctxt->d & DstMask) == ImplicitOps)
goto special_insn;
if ((ctxt->dst.type == OP_MEM) && !(ctxt->d & Mov)) {
/* optimisation - avoid slow emulated read if Mov */
rc = segmented_read(ctxt, ctxt->dst.addr.mem,
&ctxt->dst.val, ctxt->dst.bytes);
if (rc != X86EMUL_CONTINUE)
goto done;
}
ctxt->dst.orig_val = ctxt->dst.val;
special_insn:
if (unlikely(ctxt->guest_mode) && (ctxt->d & Intercept)) {
rc = emulator_check_intercept(ctxt, ctxt->intercept,
X86_ICPT_POST_MEMACCESS);
if (rc != X86EMUL_CONTINUE)
goto done;
}
if (ctxt->rep_prefix && (ctxt->d & String))
ctxt->eflags |= EFLG_RF;
else
ctxt->eflags &= ~EFLG_RF;
if (ctxt->execute) {
if (ctxt->d & Fastop) {
void (*fop)(struct fastop *) = (void *)ctxt->execute;
rc = fastop(ctxt, fop);
if (rc != X86EMUL_CONTINUE)
goto done;
goto writeback;
}
rc = ctxt->execute(ctxt);
if (rc != X86EMUL_CONTINUE)
goto done;
goto writeback;
}
if (ctxt->opcode_len == 2)
goto twobyte_insn;
else if (ctxt->opcode_len == 3)
goto threebyte_insn;
switch (ctxt->b) {
case 0x63: /* movsxd */
if (ctxt->mode != X86EMUL_MODE_PROT64)
goto cannot_emulate;
ctxt->dst.val = (s32) ctxt->src.val;
break;
case 0x70 ... 0x7f: /* jcc (short) */
if (test_cc(ctxt->b, ctxt->eflags))
jmp_rel(ctxt, ctxt->src.val);
break;
case 0x8d: /* lea r16/r32, m */
ctxt->dst.val = ctxt->src.addr.mem.ea;
break;
case 0x90 ... 0x97: /* nop / xchg reg, rax */
if (ctxt->dst.addr.reg == reg_rmw(ctxt, VCPU_REGS_RAX))
ctxt->dst.type = OP_NONE;
else
rc = em_xchg(ctxt);
break;
case 0x98: /* cbw/cwde/cdqe */
switch (ctxt->op_bytes) {
case 2: ctxt->dst.val = (s8)ctxt->dst.val; break;
case 4: ctxt->dst.val = (s16)ctxt->dst.val; break;
case 8: ctxt->dst.val = (s32)ctxt->dst.val; break;
}
break;
case 0xcc: /* int3 */
rc = emulate_int(ctxt, 3);
break;
case 0xcd: /* int n */
rc = emulate_int(ctxt, ctxt->src.val);
break;
case 0xce: /* into */
if (ctxt->eflags & EFLG_OF)
rc = emulate_int(ctxt, 4);
break;
case 0xe9: /* jmp rel */
case 0xeb: /* jmp rel short */
jmp_rel(ctxt, ctxt->src.val);
ctxt->dst.type = OP_NONE; /* Disable writeback. */
break;
case 0xf4: /* hlt */
ctxt->ops->halt(ctxt);
break;
case 0xf5: /* cmc */
/* complement carry flag from eflags reg */
ctxt->eflags ^= EFLG_CF;
break;
case 0xf8: /* clc */
ctxt->eflags &= ~EFLG_CF;
break;
case 0xf9: /* stc */
ctxt->eflags |= EFLG_CF;
break;
case 0xfc: /* cld */
ctxt->eflags &= ~EFLG_DF;
break;
case 0xfd: /* std */
ctxt->eflags |= EFLG_DF;
break;
default:
goto cannot_emulate;
}
if (rc != X86EMUL_CONTINUE)
goto done;
writeback:
if (ctxt->d & SrcWrite) {
BUG_ON(ctxt->src.type == OP_MEM || ctxt->src.type == OP_MEM_STR);
rc = writeback(ctxt, &ctxt->src);
if (rc != X86EMUL_CONTINUE)
goto done;
}
if (!(ctxt->d & NoWrite)) {
rc = writeback(ctxt, &ctxt->dst);
if (rc != X86EMUL_CONTINUE)
goto done;
}
/*
* restore dst type in case the decoding will be reused
* (happens for string instruction )
*/
ctxt->dst.type = saved_dst_type;
if ((ctxt->d & SrcMask) == SrcSI)
string_addr_inc(ctxt, VCPU_REGS_RSI, &ctxt->src);
if ((ctxt->d & DstMask) == DstDI)
string_addr_inc(ctxt, VCPU_REGS_RDI, &ctxt->dst);
if (ctxt->rep_prefix && (ctxt->d & String)) {
unsigned int count;
struct read_cache *r = &ctxt->io_read;
if ((ctxt->d & SrcMask) == SrcSI)
count = ctxt->src.count;
else
count = ctxt->dst.count;
register_address_increment(ctxt, reg_rmw(ctxt, VCPU_REGS_RCX),
-count);
if (!string_insn_completed(ctxt)) {
/*
* Re-enter guest when pio read ahead buffer is empty
* or, if it is not used, after each 1024 iteration.
*/
if ((r->end != 0 || reg_read(ctxt, VCPU_REGS_RCX) & 0x3ff) &&
(r->end == 0 || r->end != r->pos)) {
/*
* Reset read cache. Usually happens before
* decode, but since instruction is restarted
* we have to do it here.
*/
ctxt->mem_read.end = 0;
writeback_registers(ctxt);
return EMULATION_RESTART;
}
goto done; /* skip rip writeback */
}
ctxt->eflags &= ~EFLG_RF;
}
ctxt->eip = ctxt->_eip;
done:
if (rc == X86EMUL_PROPAGATE_FAULT) {
WARN_ON(ctxt->exception.vector > 0x1f);
ctxt->have_exception = true;
}
if (rc == X86EMUL_INTERCEPTED)
return EMULATION_INTERCEPTED;
if (rc == X86EMUL_CONTINUE)
writeback_registers(ctxt);
return (rc == X86EMUL_UNHANDLEABLE) ? EMULATION_FAILED : EMULATION_OK;
twobyte_insn:
switch (ctxt->b) {
case 0x09: /* wbinvd */
(ctxt->ops->wbinvd)(ctxt);
break;
case 0x08: /* invd */
case 0x0d: /* GrpP (prefetch) */
case 0x18: /* Grp16 (prefetch/nop) */
case 0x1f: /* nop */
break;
case 0x20: /* mov cr, reg */
ctxt->dst.val = ops->get_cr(ctxt, ctxt->modrm_reg);
break;
case 0x21: /* mov from dr to reg */
ops->get_dr(ctxt, ctxt->modrm_reg, &ctxt->dst.val);
break;
case 0x40 ... 0x4f: /* cmov */
if (test_cc(ctxt->b, ctxt->eflags))
ctxt->dst.val = ctxt->src.val;
else if (ctxt->mode != X86EMUL_MODE_PROT64 ||
ctxt->op_bytes != 4)
ctxt->dst.type = OP_NONE; /* no writeback */
break;
case 0x80 ... 0x8f: /* jnz rel, etc*/
if (test_cc(ctxt->b, ctxt->eflags))
jmp_rel(ctxt, ctxt->src.val);
break;
case 0x90 ... 0x9f: /* setcc r/m8 */
ctxt->dst.val = test_cc(ctxt->b, ctxt->eflags);
break;
case 0xae: /* clflush */
break;
case 0xb6 ... 0xb7: /* movzx */
ctxt->dst.bytes = ctxt->op_bytes;
ctxt->dst.val = (ctxt->src.bytes == 1) ? (u8) ctxt->src.val
: (u16) ctxt->src.val;
break;
case 0xbe ... 0xbf: /* movsx */
ctxt->dst.bytes = ctxt->op_bytes;
ctxt->dst.val = (ctxt->src.bytes == 1) ? (s8) ctxt->src.val :
(s16) ctxt->src.val;
break;
case 0xc3: /* movnti */
ctxt->dst.bytes = ctxt->op_bytes;
ctxt->dst.val = (ctxt->op_bytes == 8) ? (u64) ctxt->src.val :
(u32) ctxt->src.val;
break;
default:
goto cannot_emulate;
}
threebyte_insn:
if (rc != X86EMUL_CONTINUE)
goto done;
goto writeback;
cannot_emulate:
return EMULATION_FAILED;
} | 2062 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:39+03:00 | KVM: x86: Handle errors when RIP is set during far jumps
Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not
handle this case, and may result in failed vm-entry once the assignment is
done. The tricky part of doing so is that loading the new CS affects the
VMCS/VMCB state, so if we fail during loading the new RIP, we are left in
unconsistent state. Therefore, this patch saves on 64-bit the old CS
descriptor and restores it if loading RIP failed.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | d1442d85cc30ea75f7d399474ca738e0bc96f715 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | __load_segment_descriptor | __load_segment_descriptor( struct x86_emulate_ctxt * ctxt , u16 selector , int seg , u8 cpl , bool in_task_switch) | ['ctxt', 'selector', 'seg', 'cpl', 'in_task_switch'] | static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
u16 selector, int seg, u8 cpl, bool in_task_switch)
{
struct desc_struct seg_desc, old_desc;
u8 dpl, rpl;
unsigned err_vec = GP_VECTOR;
u32 err_code = 0;
bool null_selector = !(selector & ~0x3); /* 0000-0003 are null */
ulong desc_addr;
int ret;
u16 dummy;
u32 base3 = 0;
memset(&seg_desc, 0, sizeof seg_desc);
if (ctxt->mode == X86EMUL_MODE_REAL) {
/* set real mode segment descriptor (keep limit etc. for
* unreal mode) */
ctxt->ops->get_segment(ctxt, &dummy, &seg_desc, NULL, seg);
set_desc_base(&seg_desc, selector << 4);
goto load;
} else if (seg <= VCPU_SREG_GS && ctxt->mode == X86EMUL_MODE_VM86) {
/* VM86 needs a clean new segment descriptor */
set_desc_base(&seg_desc, selector << 4);
set_desc_limit(&seg_desc, 0xffff);
seg_desc.type = 3;
seg_desc.p = 1;
seg_desc.s = 1;
seg_desc.dpl = 3;
goto load;
}
rpl = selector & 3;
/* NULL selector is not valid for TR, CS and SS (except for long mode) */
if ((seg == VCPU_SREG_CS
|| (seg == VCPU_SREG_SS
&& (ctxt->mode != X86EMUL_MODE_PROT64 || rpl != cpl))
|| seg == VCPU_SREG_TR)
&& null_selector)
goto exception;
/* TR should be in GDT only */
if (seg == VCPU_SREG_TR && (selector & (1 << 2)))
goto exception;
if (null_selector) /* for NULL selector skip all following checks */
goto load;
ret = read_segment_descriptor(ctxt, selector, &seg_desc, &desc_addr);
if (ret != X86EMUL_CONTINUE)
return ret;
err_code = selector & 0xfffc;
err_vec = in_task_switch ? TS_VECTOR : GP_VECTOR;
/* can't load system descriptor into segment selector */
if (seg <= VCPU_SREG_GS && !seg_desc.s)
goto exception;
if (!seg_desc.p) {
err_vec = (seg == VCPU_SREG_SS) ? SS_VECTOR : NP_VECTOR;
goto exception;
}
dpl = seg_desc.dpl;
switch (seg) {
case VCPU_SREG_SS:
/*
* segment is not a writable data segment or segment
* selector's RPL != CPL or segment selector's RPL != CPL
*/
if (rpl != cpl || (seg_desc.type & 0xa) != 0x2 || dpl != cpl)
goto exception;
break;
case VCPU_SREG_CS:
if (!(seg_desc.type & 8))
goto exception;
if (seg_desc.type & 4) {
/* conforming */
if (dpl > cpl)
goto exception;
} else {
/* nonconforming */
if (rpl > cpl || dpl != cpl)
goto exception;
}
/* in long-mode d/b must be clear if l is set */
if (seg_desc.d && seg_desc.l) {
u64 efer = 0;
ctxt->ops->get_msr(ctxt, MSR_EFER, &efer);
if (efer & EFER_LMA)
goto exception;
}
/* CS(RPL) <- CPL */
selector = (selector & 0xfffc) | cpl;
break;
case VCPU_SREG_TR:
if (seg_desc.s || (seg_desc.type != 1 && seg_desc.type != 9))
goto exception;
old_desc = seg_desc;
seg_desc.type |= 2; /* busy */
ret = ctxt->ops->cmpxchg_emulated(ctxt, desc_addr, &old_desc, &seg_desc,
sizeof(seg_desc), &ctxt->exception);
if (ret != X86EMUL_CONTINUE)
return ret;
break;
case VCPU_SREG_LDTR:
if (seg_desc.s || seg_desc.type != 2)
goto exception;
break;
default: /* DS, ES, FS, or GS */
/*
* segment is not a data or readable code segment or
* ((segment is a data or nonconforming code segment)
* and (both RPL and CPL > DPL))
*/
if ((seg_desc.type & 0xa) == 0x8 ||
(((seg_desc.type & 0xc) != 0xc) &&
(rpl > dpl && cpl > dpl)))
goto exception;
break;
}
if (seg_desc.s) {
/* mark segment as accessed */
seg_desc.type |= 1;
ret = write_segment_descriptor(ctxt, selector, &seg_desc);
if (ret != X86EMUL_CONTINUE)
return ret;
} else if (ctxt->mode == X86EMUL_MODE_PROT64) {
ret = ctxt->ops->read_std(ctxt, desc_addr+8, &base3,
sizeof(base3), &ctxt->exception);
if (ret != X86EMUL_CONTINUE)
return ret;
}
load:
ctxt->ops->set_segment(ctxt, selector, &seg_desc, base3, seg);
return X86EMUL_CONTINUE;
exception:
return emulate_exception(ctxt, err_vec, err_code, true);
} | 728 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:39+03:00 | KVM: x86: Handle errors when RIP is set during far jumps
Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not
handle this case, and may result in failed vm-entry once the assignment is
done. The tricky part of doing so is that loading the new CS affects the
VMCS/VMCB state, so if we fail during loading the new RIP, we are left in
unconsistent state. Therefore, this patch saves on 64-bit the old CS
descriptor and restores it if loading RIP failed.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | d1442d85cc30ea75f7d399474ca738e0bc96f715 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_call_far | em_call_far( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_call_far(struct x86_emulate_ctxt *ctxt)
{
u16 sel, old_cs;
ulong old_eip;
int rc;
old_cs = get_segment_selector(ctxt, VCPU_SREG_CS);
old_eip = ctxt->_eip;
memcpy(&sel, ctxt->src.valptr + ctxt->op_bytes, 2);
if (load_segment_descriptor(ctxt, sel, VCPU_SREG_CS))
return X86EMUL_CONTINUE;
ctxt->_eip = 0;
memcpy(&ctxt->_eip, ctxt->src.valptr, ctxt->op_bytes);
ctxt->src.val = old_cs;
rc = em_push(ctxt);
if (rc != X86EMUL_CONTINUE)
return rc;
ctxt->src.val = old_eip;
return em_push(ctxt);
} | 129 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:39+03:00 | KVM: x86: Handle errors when RIP is set during far jumps
Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not
handle this case, and may result in failed vm-entry once the assignment is
done. The tricky part of doing so is that loading the new CS affects the
VMCS/VMCB state, so if we fail during loading the new RIP, we are left in
unconsistent state. Therefore, this patch saves on 64-bit the old CS
descriptor and restores it if loading RIP failed.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | d1442d85cc30ea75f7d399474ca738e0bc96f715 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_jmp_far | em_jmp_far( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_jmp_far(struct x86_emulate_ctxt *ctxt)
{
int rc;
unsigned short sel;
memcpy(&sel, ctxt->src.valptr + ctxt->op_bytes, 2);
rc = load_segment_descriptor(ctxt, sel, VCPU_SREG_CS);
if (rc != X86EMUL_CONTINUE)
return rc;
ctxt->_eip = 0;
memcpy(&ctxt->_eip, ctxt->src.valptr, ctxt->op_bytes);
return X86EMUL_CONTINUE;
} | 81 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:39+03:00 | KVM: x86: Handle errors when RIP is set during far jumps
Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not
handle this case, and may result in failed vm-entry once the assignment is
done. The tricky part of doing so is that loading the new CS affects the
VMCS/VMCB state, so if we fail during loading the new RIP, we are left in
unconsistent state. Therefore, this patch saves on 64-bit the old CS
descriptor and restores it if loading RIP failed.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | d1442d85cc30ea75f7d399474ca738e0bc96f715 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_ret_far | em_ret_far( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_ret_far(struct x86_emulate_ctxt *ctxt)
{
int rc;
unsigned long cs;
int cpl = ctxt->ops->cpl(ctxt);
rc = emulate_pop(ctxt, &ctxt->_eip, ctxt->op_bytes);
if (rc != X86EMUL_CONTINUE)
return rc;
if (ctxt->op_bytes == 4)
ctxt->_eip = (u32)ctxt->_eip;
rc = emulate_pop(ctxt, &cs, ctxt->op_bytes);
if (rc != X86EMUL_CONTINUE)
return rc;
/* Outer-privilege level return is not implemented */
if (ctxt->mode >= X86EMUL_MODE_PROT16 && (cs & 3) > cpl)
return X86EMUL_UNHANDLEABLE;
rc = load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS);
return rc;
} | 131 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:39+03:00 | KVM: x86: Handle errors when RIP is set during far jumps
Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not
handle this case, and may result in failed vm-entry once the assignment is
done. The tricky part of doing so is that loading the new CS affects the
VMCS/VMCB state, so if we fail during loading the new RIP, we are left in
unconsistent state. Therefore, this patch saves on 64-bit the old CS
descriptor and restores it if loading RIP failed.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | d1442d85cc30ea75f7d399474ca738e0bc96f715 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | load_segment_descriptor | load_segment_descriptor( struct x86_emulate_ctxt * ctxt , u16 selector , int seg) | ['ctxt', 'selector', 'seg'] | static int load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
u16 selector, int seg)
{
u8 cpl = ctxt->ops->cpl(ctxt);
return __load_segment_descriptor(ctxt, selector, seg, cpl, false);
} | 41 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:39+03:00 | KVM: x86: Handle errors when RIP is set during far jumps
Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not
handle this case, and may result in failed vm-entry once the assignment is
done. The tricky part of doing so is that loading the new CS affects the
VMCS/VMCB state, so if we fail during loading the new RIP, we are left in
unconsistent state. Therefore, this patch saves on 64-bit the old CS
descriptor and restores it if loading RIP failed.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | d1442d85cc30ea75f7d399474ca738e0bc96f715 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | load_state_from_tss16 | load_state_from_tss16( struct x86_emulate_ctxt * ctxt , struct tss_segment_16 * tss) | ['ctxt', 'tss'] | static int load_state_from_tss16(struct x86_emulate_ctxt *ctxt,
struct tss_segment_16 *tss)
{
int ret;
u8 cpl;
ctxt->_eip = tss->ip;
ctxt->eflags = tss->flag | 2;
*reg_write(ctxt, VCPU_REGS_RAX) = tss->ax;
*reg_write(ctxt, VCPU_REGS_RCX) = tss->cx;
*reg_write(ctxt, VCPU_REGS_RDX) = tss->dx;
*reg_write(ctxt, VCPU_REGS_RBX) = tss->bx;
*reg_write(ctxt, VCPU_REGS_RSP) = tss->sp;
*reg_write(ctxt, VCPU_REGS_RBP) = tss->bp;
*reg_write(ctxt, VCPU_REGS_RSI) = tss->si;
*reg_write(ctxt, VCPU_REGS_RDI) = tss->di;
/*
* SDM says that segment selectors are loaded before segment
* descriptors
*/
set_segment_selector(ctxt, tss->ldt, VCPU_SREG_LDTR);
set_segment_selector(ctxt, tss->es, VCPU_SREG_ES);
set_segment_selector(ctxt, tss->cs, VCPU_SREG_CS);
set_segment_selector(ctxt, tss->ss, VCPU_SREG_SS);
set_segment_selector(ctxt, tss->ds, VCPU_SREG_DS);
cpl = tss->cs & 3;
/*
* Now load segment descriptors. If fault happens at this stage
* it is handled in a context of new task
*/
ret = __load_segment_descriptor(ctxt, tss->ldt, VCPU_SREG_LDTR, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
return X86EMUL_CONTINUE;
} | 330 | True | 1 |
|
CVE-2014-3647 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:P | LOCAL | MEDIUM | NONE | NONE | NONE | PARTIAL | 1.9 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'https://github.com/torvalds/linux/commit/d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144897', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'name': 'https://github.com/torvalds/linux/commit/234f3ce485d54017f15cf5e0699cff4100121601', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1442d85cc30ea75f7d399474ca738e0bc96f715', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70748', 'name': '70748', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T18:09Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Nadav Amit | 2014-09-18 22:39:39+03:00 | KVM: x86: Handle errors when RIP is set during far jumps
Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not
handle this case, and may result in failed vm-entry once the assignment is
done. The tricky part of doing so is that loading the new CS affects the
VMCS/VMCB state, so if we fail during loading the new RIP, we are left in
unconsistent state. Therefore, this patch saves on 64-bit the old CS
descriptor and restores it if loading RIP failed.
This fixes CVE-2014-3647.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | d1442d85cc30ea75f7d399474ca738e0bc96f715 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | load_state_from_tss32 | load_state_from_tss32( struct x86_emulate_ctxt * ctxt , struct tss_segment_32 * tss) | ['ctxt', 'tss'] | static int load_state_from_tss32(struct x86_emulate_ctxt *ctxt,
struct tss_segment_32 *tss)
{
int ret;
u8 cpl;
if (ctxt->ops->set_cr(ctxt, 3, tss->cr3))
return emulate_gp(ctxt, 0);
ctxt->_eip = tss->eip;
ctxt->eflags = tss->eflags | 2;
/* General purpose registers */
*reg_write(ctxt, VCPU_REGS_RAX) = tss->eax;
*reg_write(ctxt, VCPU_REGS_RCX) = tss->ecx;
*reg_write(ctxt, VCPU_REGS_RDX) = tss->edx;
*reg_write(ctxt, VCPU_REGS_RBX) = tss->ebx;
*reg_write(ctxt, VCPU_REGS_RSP) = tss->esp;
*reg_write(ctxt, VCPU_REGS_RBP) = tss->ebp;
*reg_write(ctxt, VCPU_REGS_RSI) = tss->esi;
*reg_write(ctxt, VCPU_REGS_RDI) = tss->edi;
/*
* SDM says that segment selectors are loaded before segment
* descriptors. This is important because CPL checks will
* use CS.RPL.
*/
set_segment_selector(ctxt, tss->ldt_selector, VCPU_SREG_LDTR);
set_segment_selector(ctxt, tss->es, VCPU_SREG_ES);
set_segment_selector(ctxt, tss->cs, VCPU_SREG_CS);
set_segment_selector(ctxt, tss->ss, VCPU_SREG_SS);
set_segment_selector(ctxt, tss->ds, VCPU_SREG_DS);
set_segment_selector(ctxt, tss->fs, VCPU_SREG_FS);
set_segment_selector(ctxt, tss->gs, VCPU_SREG_GS);
/*
* If we're switching between Protected Mode and VM86, we need to make
* sure to update the mode before loading the segment descriptors so
* that the selectors are interpreted correctly.
*/
if (ctxt->eflags & X86_EFLAGS_VM) {
ctxt->mode = X86EMUL_MODE_VM86;
cpl = 3;
} else {
ctxt->mode = X86EMUL_MODE_PROT32;
cpl = tss->cs & 3;
}
/*
* Now load segment descriptors. If fault happenes at this stage
* it is handled in a context of new task
*/
ret = __load_segment_descriptor(ctxt, tss->ldt_selector, VCPU_SREG_LDTR, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->fs, VCPU_SREG_FS, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
ret = __load_segment_descriptor(ctxt, tss->gs, VCPU_SREG_GS, cpl, true);
if (ret != X86EMUL_CONTINUE)
return ret;
return X86EMUL_CONTINUE;
} | 458 | True | 1 |
|
CVE-2014-3646 | False | False | False | True | AV:L/AC:M/Au:N/C:N/I:N/A:C | LOCAL | MEDIUM | NONE | NONE | NONE | COMPLETE | 4.7 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | False | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144825', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1144825', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/9', 'name': '[oss-security] 20141024 kvm issues', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a642fc305053cc1c6e47e4f4df327895747ab485', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a642fc305053cc1c6e47e4f4df327895747ab485', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/a642fc305053cc1c6e47e4f4df327895747ab485', 'name': 'https://github.com/torvalds/linux/commit/a642fc305053cc1c6e47e4f4df327895747ab485', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2394-1', 'name': 'USN-2394-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2418-1', 'name': 'USN-2418-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2417-1', 'name': 'USN-2417-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2014/dsa-3060', 'name': 'DSA-3060', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0126.html', 'name': 'RHSA-2015:0126', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0284.html', 'name': 'RHSA-2015:0284', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel through 3.17.2 does not have an exit handler for the INVVPID instruction, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.'}] | 2020-08-13T19:34Z | 2014-11-10T11:55Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Petr Matousek | 2014-09-23 20:22:30+02:00 | kvm: vmx: handle invvpid vm exit gracefully
On systems with invvpid instruction support (corresponding bit in
IA32_VMX_EPT_VPID_CAP MSR is set) guest invocation of invvpid
causes vm exit, which is currently not handled and results in
propagation of unknown exit to userspace.
Fix this by installing an invvpid vm exit handler.
This is CVE-2014-3646.
Cc: [email protected]
Signed-off-by: Petr Matousek <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | a642fc305053cc1c6e47e4f4df327895747ab485 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | nested_vmx_exit_handled | nested_vmx_exit_handled( struct kvm_vcpu * vcpu) | ['vcpu'] | static bool nested_vmx_exit_handled(struct kvm_vcpu *vcpu)
{
u32 intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
struct vcpu_vmx *vmx = to_vmx(vcpu);
struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
u32 exit_reason = vmx->exit_reason;
trace_kvm_nested_vmexit(kvm_rip_read(vcpu), exit_reason,
vmcs_readl(EXIT_QUALIFICATION),
vmx->idt_vectoring_info,
intr_info,
vmcs_read32(VM_EXIT_INTR_ERROR_CODE),
KVM_ISA_VMX);
if (vmx->nested.nested_run_pending)
return 0;
if (unlikely(vmx->fail)) {
pr_info_ratelimited("%s failed vm entry %x\n", __func__,
vmcs_read32(VM_INSTRUCTION_ERROR));
return 1;
}
switch (exit_reason) {
case EXIT_REASON_EXCEPTION_NMI:
if (!is_exception(intr_info))
return 0;
else if (is_page_fault(intr_info))
return enable_ept;
else if (is_no_device(intr_info) &&
!(vmcs12->guest_cr0 & X86_CR0_TS))
return 0;
return vmcs12->exception_bitmap &
(1u << (intr_info & INTR_INFO_VECTOR_MASK));
case EXIT_REASON_EXTERNAL_INTERRUPT:
return 0;
case EXIT_REASON_TRIPLE_FAULT:
return 1;
case EXIT_REASON_PENDING_INTERRUPT:
return nested_cpu_has(vmcs12, CPU_BASED_VIRTUAL_INTR_PENDING);
case EXIT_REASON_NMI_WINDOW:
return nested_cpu_has(vmcs12, CPU_BASED_VIRTUAL_NMI_PENDING);
case EXIT_REASON_TASK_SWITCH:
return 1;
case EXIT_REASON_CPUID:
if (kvm_register_read(vcpu, VCPU_REGS_RAX) == 0xa)
return 0;
return 1;
case EXIT_REASON_HLT:
return nested_cpu_has(vmcs12, CPU_BASED_HLT_EXITING);
case EXIT_REASON_INVD:
return 1;
case EXIT_REASON_INVLPG:
return nested_cpu_has(vmcs12, CPU_BASED_INVLPG_EXITING);
case EXIT_REASON_RDPMC:
return nested_cpu_has(vmcs12, CPU_BASED_RDPMC_EXITING);
case EXIT_REASON_RDTSC:
return nested_cpu_has(vmcs12, CPU_BASED_RDTSC_EXITING);
case EXIT_REASON_VMCALL: case EXIT_REASON_VMCLEAR:
case EXIT_REASON_VMLAUNCH: case EXIT_REASON_VMPTRLD:
case EXIT_REASON_VMPTRST: case EXIT_REASON_VMREAD:
case EXIT_REASON_VMRESUME: case EXIT_REASON_VMWRITE:
case EXIT_REASON_VMOFF: case EXIT_REASON_VMON:
case EXIT_REASON_INVEPT:
/*
* VMX instructions trap unconditionally. This allows L1 to
* emulate them for its L2 guest, i.e., allows 3-level nesting!
*/
return 1;
case EXIT_REASON_CR_ACCESS:
return nested_vmx_exit_handled_cr(vcpu, vmcs12);
case EXIT_REASON_DR_ACCESS:
return nested_cpu_has(vmcs12, CPU_BASED_MOV_DR_EXITING);
case EXIT_REASON_IO_INSTRUCTION:
return nested_vmx_exit_handled_io(vcpu, vmcs12);
case EXIT_REASON_MSR_READ:
case EXIT_REASON_MSR_WRITE:
return nested_vmx_exit_handled_msr(vcpu, vmcs12, exit_reason);
case EXIT_REASON_INVALID_STATE:
return 1;
case EXIT_REASON_MWAIT_INSTRUCTION:
return nested_cpu_has(vmcs12, CPU_BASED_MWAIT_EXITING);
case EXIT_REASON_MONITOR_INSTRUCTION:
return nested_cpu_has(vmcs12, CPU_BASED_MONITOR_EXITING);
case EXIT_REASON_PAUSE_INSTRUCTION:
return nested_cpu_has(vmcs12, CPU_BASED_PAUSE_EXITING) ||
nested_cpu_has2(vmcs12,
SECONDARY_EXEC_PAUSE_LOOP_EXITING);
case EXIT_REASON_MCE_DURING_VMENTRY:
return 0;
case EXIT_REASON_TPR_BELOW_THRESHOLD:
return nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW);
case EXIT_REASON_APIC_ACCESS:
return nested_cpu_has2(vmcs12,
SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES);
case EXIT_REASON_EPT_VIOLATION:
/*
* L0 always deals with the EPT violation. If nested EPT is
* used, and the nested mmu code discovers that the address is
* missing in the guest EPT table (EPT12), the EPT violation
* will be injected with nested_ept_inject_page_fault()
*/
return 0;
case EXIT_REASON_EPT_MISCONFIG:
/*
* L2 never uses directly L1's EPT, but rather L0's own EPT
* table (shadow on EPT) or a merged EPT table that L0 built
* (EPT on EPT). So any problems with the structure of the
* table is L0's fault.
*/
return 0;
case EXIT_REASON_WBINVD:
return nested_cpu_has2(vmcs12, SECONDARY_EXEC_WBINVD_EXITING);
case EXIT_REASON_XSETBV:
return 1;
default:
return 1;
}
} | 479 | True | 1 |
|
CVE-2014-8481 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://github.com/torvalds/linux/commit/a430c9166312e1aa3d80bce32374233bdbfeba32', 'name': 'https://github.com/torvalds/linux/commit/a430c9166312e1aa3d80bce32374233bdbfeba32', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/23/7', 'name': '[oss-security] 20141023 CVE Request: Linux 3.17 guest-triggerable KVM OOPS', 'refsource': 'MLIST', 'tags': ['Exploit']}, {'url': 'http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427', 'name': '[kvm] 20141013 [PATCH 0/2] KVM: x86: Fixing clflush/hint_nop/prefetch', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a430c9166312e1aa3d80bce32374233bdbfeba32', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a430c9166312e1aa3d80bce32374233bdbfeba32', 'refsource': 'CONFIRM', 'tags': ['Exploit']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1156615', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1156615', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://secunia.com/advisories/62042', 'name': '62042', 'refsource': 'SECUNIA', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:rc1:*:*:*:*:*:*', 'versionEndIncluding': '3.18', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.'}] | 2015-11-20T16:08Z | 2014-11-10T11:55Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Paolo Bonzini | 2014-10-23 14:54:14+02:00 | KVM: emulate: avoid accessing NULL ctxt->memopp
A failure to decode the instruction can cause a NULL pointer access.
This is fixed simply by moving the "done" label as close as possible
to the return.
This fixes CVE-2014-8481.
Reported-by: Andy Lutomirski <[email protected]>
Cc: [email protected]
Fixes: 41061cdb98a0bec464278b4db8e894a3121671f5
Signed-off-by: Paolo Bonzini <[email protected]> | a430c9166312e1aa3d80bce32374233bdbfeba32 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | x86_decode_insn | x86_decode_insn( struct x86_emulate_ctxt * ctxt , void * insn , int insn_len) | ['ctxt', 'insn', 'insn_len'] | int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len)
{
int rc = X86EMUL_CONTINUE;
int mode = ctxt->mode;
int def_op_bytes, def_ad_bytes, goffset, simd_prefix;
bool op_prefix = false;
bool has_seg_override = false;
struct opcode opcode;
ctxt->memop.type = OP_NONE;
ctxt->memopp = NULL;
ctxt->_eip = ctxt->eip;
ctxt->fetch.ptr = ctxt->fetch.data;
ctxt->fetch.end = ctxt->fetch.data + insn_len;
ctxt->opcode_len = 1;
if (insn_len > 0)
memcpy(ctxt->fetch.data, insn, insn_len);
else {
rc = __do_insn_fetch_bytes(ctxt, 1);
if (rc != X86EMUL_CONTINUE)
return rc;
}
switch (mode) {
case X86EMUL_MODE_REAL:
case X86EMUL_MODE_VM86:
case X86EMUL_MODE_PROT16:
def_op_bytes = def_ad_bytes = 2;
break;
case X86EMUL_MODE_PROT32:
def_op_bytes = def_ad_bytes = 4;
break;
#ifdef CONFIG_X86_64
case X86EMUL_MODE_PROT64:
def_op_bytes = 4;
def_ad_bytes = 8;
break;
#endif
default:
return EMULATION_FAILED;
}
ctxt->op_bytes = def_op_bytes;
ctxt->ad_bytes = def_ad_bytes;
/* Legacy prefixes. */
for (;;) {
switch (ctxt->b = insn_fetch(u8, ctxt)) {
case 0x66: /* operand-size override */
op_prefix = true;
/* switch between 2/4 bytes */
ctxt->op_bytes = def_op_bytes ^ 6;
break;
case 0x67: /* address-size override */
if (mode == X86EMUL_MODE_PROT64)
/* switch between 4/8 bytes */
ctxt->ad_bytes = def_ad_bytes ^ 12;
else
/* switch between 2/4 bytes */
ctxt->ad_bytes = def_ad_bytes ^ 6;
break;
case 0x26: /* ES override */
case 0x2e: /* CS override */
case 0x36: /* SS override */
case 0x3e: /* DS override */
has_seg_override = true;
ctxt->seg_override = (ctxt->b >> 3) & 3;
break;
case 0x64: /* FS override */
case 0x65: /* GS override */
has_seg_override = true;
ctxt->seg_override = ctxt->b & 7;
break;
case 0x40 ... 0x4f: /* REX */
if (mode != X86EMUL_MODE_PROT64)
goto done_prefixes;
ctxt->rex_prefix = ctxt->b;
continue;
case 0xf0: /* LOCK */
ctxt->lock_prefix = 1;
break;
case 0xf2: /* REPNE/REPNZ */
case 0xf3: /* REP/REPE/REPZ */
ctxt->rep_prefix = ctxt->b;
break;
default:
goto done_prefixes;
}
/* Any legacy prefix after a REX prefix nullifies its effect. */
ctxt->rex_prefix = 0;
}
done_prefixes:
/* REX prefix. */
if (ctxt->rex_prefix & 8)
ctxt->op_bytes = 8; /* REX.W */
/* Opcode byte(s). */
opcode = opcode_table[ctxt->b];
/* Two-byte opcode? */
if (ctxt->b == 0x0f) {
ctxt->opcode_len = 2;
ctxt->b = insn_fetch(u8, ctxt);
opcode = twobyte_table[ctxt->b];
/* 0F_38 opcode map */
if (ctxt->b == 0x38) {
ctxt->opcode_len = 3;
ctxt->b = insn_fetch(u8, ctxt);
opcode = opcode_map_0f_38[ctxt->b];
}
}
ctxt->d = opcode.flags;
if (ctxt->d & ModRM)
ctxt->modrm = insn_fetch(u8, ctxt);
/* vex-prefix instructions are not implemented */
if (ctxt->opcode_len == 1 && (ctxt->b == 0xc5 || ctxt->b == 0xc4) &&
(mode == X86EMUL_MODE_PROT64 ||
(mode >= X86EMUL_MODE_PROT16 && (ctxt->modrm & 0x80)))) {
ctxt->d = NotImpl;
}
while (ctxt->d & GroupMask) {
switch (ctxt->d & GroupMask) {
case Group:
goffset = (ctxt->modrm >> 3) & 7;
opcode = opcode.u.group[goffset];
break;
case GroupDual:
goffset = (ctxt->modrm >> 3) & 7;
if ((ctxt->modrm >> 6) == 3)
opcode = opcode.u.gdual->mod3[goffset];
else
opcode = opcode.u.gdual->mod012[goffset];
break;
case RMExt:
goffset = ctxt->modrm & 7;
opcode = opcode.u.group[goffset];
break;
case Prefix:
if (ctxt->rep_prefix && op_prefix)
return EMULATION_FAILED;
simd_prefix = op_prefix ? 0x66 : ctxt->rep_prefix;
switch (simd_prefix) {
case 0x00: opcode = opcode.u.gprefix->pfx_no; break;
case 0x66: opcode = opcode.u.gprefix->pfx_66; break;
case 0xf2: opcode = opcode.u.gprefix->pfx_f2; break;
case 0xf3: opcode = opcode.u.gprefix->pfx_f3; break;
}
break;
case Escape:
if (ctxt->modrm > 0xbf)
opcode = opcode.u.esc->high[ctxt->modrm - 0xc0];
else
opcode = opcode.u.esc->op[(ctxt->modrm >> 3) & 7];
break;
default:
return EMULATION_FAILED;
}
ctxt->d &= ~(u64)GroupMask;
ctxt->d |= opcode.flags;
}
/* Unrecognised? */
if (ctxt->d == 0)
return EMULATION_FAILED;
ctxt->execute = opcode.u.execute;
if (unlikely(ctxt->ud) && likely(!(ctxt->d & EmulateOnUD)))
return EMULATION_FAILED;
if (unlikely(ctxt->d &
(NotImpl|Stack|Op3264|Sse|Mmx|Intercept|CheckPerm))) {
/*
* These are copied unconditionally here, and checked unconditionally
* in x86_emulate_insn.
*/
ctxt->check_perm = opcode.check_perm;
ctxt->intercept = opcode.intercept;
if (ctxt->d & NotImpl)
return EMULATION_FAILED;
if (mode == X86EMUL_MODE_PROT64 && (ctxt->d & Stack))
ctxt->op_bytes = 8;
if (ctxt->d & Op3264) {
if (mode == X86EMUL_MODE_PROT64)
ctxt->op_bytes = 8;
else
ctxt->op_bytes = 4;
}
if (ctxt->d & Sse)
ctxt->op_bytes = 16;
else if (ctxt->d & Mmx)
ctxt->op_bytes = 8;
}
/* ModRM and SIB bytes. */
if (ctxt->d & ModRM) {
rc = decode_modrm(ctxt, &ctxt->memop);
if (!has_seg_override) {
has_seg_override = true;
ctxt->seg_override = ctxt->modrm_seg;
}
} else if (ctxt->d & MemAbs)
rc = decode_abs(ctxt, &ctxt->memop);
if (rc != X86EMUL_CONTINUE)
goto done;
if (!has_seg_override)
ctxt->seg_override = VCPU_SREG_DS;
ctxt->memop.addr.mem.seg = ctxt->seg_override;
/*
* Decode and fetch the source operand: register, memory
* or immediate.
*/
rc = decode_operand(ctxt, &ctxt->src, (ctxt->d >> SrcShift) & OpMask);
if (rc != X86EMUL_CONTINUE)
goto done;
/*
* Decode and fetch the second source operand: register, memory
* or immediate.
*/
rc = decode_operand(ctxt, &ctxt->src2, (ctxt->d >> Src2Shift) & OpMask);
if (rc != X86EMUL_CONTINUE)
goto done;
/* Decode and fetch the destination operand: register or memory. */
rc = decode_operand(ctxt, &ctxt->dst, (ctxt->d >> DstShift) & OpMask);
done:
if (ctxt->rip_relative)
ctxt->memopp->addr.mem.ea += ctxt->_eip;
return (rc != X86EMUL_CONTINUE) ? EMULATION_FAILED : EMULATION_OK;
} | 1258 | True | 1 |
||
CVE-2014-8369 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:P/A:P | LOCAL | LOW | NONE | PARTIAL | PARTIAL | PARTIAL | 4.6 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1156518', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1156518', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/7', 'name': '[oss-security] 20141024 CVE-2014-8369 - Linux kernel iommu.c excessive unpinning', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://lkml.org/lkml/2014/10/24/460', 'name': '[linux-kernel] 20141024 [PATCH 13/14] kvm: fix excessive pages un-pinning in kvm_iommu_map error path.', 'refsource': 'MLIST', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/3d32e4dbe71374a6780eaf51d719d76f9a9bf22f', 'name': 'https://github.com/torvalds/linux/commit/3d32e4dbe71374a6780eaf51d719d76f9a9bf22f', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3d32e4dbe71374a6780eaf51d719d76f9a9bf22f', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3d32e4dbe71374a6780eaf51d719d76f9a9bf22f', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://secunia.com/advisories/62326', 'name': '62326', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://www.securityfocus.com/bid/70749', 'name': '70749', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://secunia.com/advisories/62336', 'name': '62336', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://www.debian.org/security/2014/dsa-3093', 'name': 'DSA-3093', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0674.html', 'name': 'RHSA-2015:0674', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70747', 'name': '70747', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-119'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_real_time_extension:11:sp3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The kvm_iommu_map_pages function in virt/kvm/iommu.c in the Linux kernel through 3.17.2 miscalculates the number of pages during the handling of a mapping failure, which allows guest OS users to cause a denial of service (host OS page unpinning) or possibly have unspecified other impact by leveraging guest OS privileges. NOTE: this vulnerability exists because of an incorrect fix for CVE-2014-3601.'}] | 2020-08-13T19:37Z | 2014-11-10T11:55Z | Improper Restriction of Operations within the Bounds of a Memory Buffer | The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. |
Certain languages allow direct addressing of memory locations and do not automatically ensure that these locations are valid for the memory buffer that is being referenced. This can cause read or write operations to be performed on memory locations that may be associated with other variables, data structures, or internal program data.
As a result, an attacker may be able to execute arbitrary code, alter the intended control flow, read sensitive information, or cause the system to crash.
| https://cwe.mitre.org/data/definitions/119.html | 0 | Quentin Casasnovas | 2014-10-17 22:55:59+02:00 | kvm: fix excessive pages un-pinning in kvm_iommu_map error path.
The third parameter of kvm_unpin_pages() when called from
kvm_iommu_map_pages() is wrong, it should be the number of pages to un-pin
and not the page size.
This error was facilitated with an inconsistent API: kvm_pin_pages() takes
a size, but kvn_unpin_pages() takes a number of pages, so fix the problem
by matching the two.
This was introduced by commit 350b8bd ("kvm: iommu: fix the third parameter
of kvm_iommu_put_pages (CVE-2014-3601)"), which fixes the lack of
un-pinning for pages intended to be un-pinned (i.e. memory leak) but
unfortunately potentially aggravated the number of pages we un-pin that
should have stayed pinned. As far as I understand though, the same
practical mitigations apply.
This issue was found during review of Red Hat 6.6 patches to prepare
Ksplice rebootless updates.
Thanks to Vegard for his time on a late Friday evening to help me in
understanding this code.
Fixes: 350b8bd ("kvm: iommu: fix the third parameter of... (CVE-2014-3601)")
Cc: [email protected]
Signed-off-by: Quentin Casasnovas <[email protected]>
Signed-off-by: Vegard Nossum <[email protected]>
Signed-off-by: Jamie Iles <[email protected]>
Reviewed-by: Sasha Levin <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 3d32e4dbe71374a6780eaf51d719d76f9a9bf22f | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | kvm_iommu_map_pages | kvm_iommu_map_pages( struct kvm * kvm , struct kvm_memory_slot * slot) | ['kvm', 'slot'] | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
{
gfn_t gfn, end_gfn;
pfn_t pfn;
int r = 0;
struct iommu_domain *domain = kvm->arch.iommu_domain;
int flags;
/* check if iommu exists and in use */
if (!domain)
return 0;
gfn = slot->base_gfn;
end_gfn = gfn + slot->npages;
flags = IOMMU_READ;
if (!(slot->flags & KVM_MEM_READONLY))
flags |= IOMMU_WRITE;
if (!kvm->arch.iommu_noncoherent)
flags |= IOMMU_CACHE;
while (gfn < end_gfn) {
unsigned long page_size;
/* Check if already mapped */
if (iommu_iova_to_phys(domain, gfn_to_gpa(gfn))) {
gfn += 1;
continue;
}
/* Get the page size we could use to map */
page_size = kvm_host_page_size(kvm, gfn);
/* Make sure the page_size does not exceed the memslot */
while ((gfn + (page_size >> PAGE_SHIFT)) > end_gfn)
page_size >>= 1;
/* Make sure gfn is aligned to the page size we want to map */
while ((gfn << PAGE_SHIFT) & (page_size - 1))
page_size >>= 1;
/* Make sure hva is aligned to the page size we want to map */
while (__gfn_to_hva_memslot(slot, gfn) & (page_size - 1))
page_size >>= 1;
/*
* Pin all pages we are about to map in memory. This is
* important because we unmap and unpin in 4kb steps later.
*/
pfn = kvm_pin_pages(slot, gfn, page_size);
if (is_error_noslot_pfn(pfn)) {
gfn += 1;
continue;
}
/* Map into IO address space */
r = iommu_map(domain, gfn_to_gpa(gfn), pfn_to_hpa(pfn),
page_size, flags);
if (r) {
printk(KERN_ERR "kvm_iommu_map_address:"
"iommu failed to map pfn=%llx\n", pfn);
kvm_unpin_pages(kvm, pfn, page_size);
goto unmap_pages;
}
gfn += page_size >> PAGE_SHIFT;
}
return 0;
unmap_pages:
kvm_iommu_put_pages(kvm, slot->base_gfn, gfn - slot->base_gfn);
return r;
} | 297 | True | 1 |
|
CVE-2014-8369 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:P/A:P | LOCAL | LOW | NONE | PARTIAL | PARTIAL | PARTIAL | 4.6 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1156518', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1156518', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/10/24/7', 'name': '[oss-security] 20141024 CVE-2014-8369 - Linux kernel iommu.c excessive unpinning', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://lkml.org/lkml/2014/10/24/460', 'name': '[linux-kernel] 20141024 [PATCH 13/14] kvm: fix excessive pages un-pinning in kvm_iommu_map error path.', 'refsource': 'MLIST', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/3d32e4dbe71374a6780eaf51d719d76f9a9bf22f', 'name': 'https://github.com/torvalds/linux/commit/3d32e4dbe71374a6780eaf51d719d76f9a9bf22f', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3d32e4dbe71374a6780eaf51d719d76f9a9bf22f', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3d32e4dbe71374a6780eaf51d719d76f9a9bf22f', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://secunia.com/advisories/62326', 'name': '62326', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://www.securityfocus.com/bid/70749', 'name': '70749', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://secunia.com/advisories/62336', 'name': '62336', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://www.debian.org/security/2014/dsa-3093', 'name': 'DSA-3093', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0674.html', 'name': 'RHSA-2015:0674', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70747', 'name': '70747', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-119'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:linux_enterprise_real_time_extension:11:sp3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The kvm_iommu_map_pages function in virt/kvm/iommu.c in the Linux kernel through 3.17.2 miscalculates the number of pages during the handling of a mapping failure, which allows guest OS users to cause a denial of service (host OS page unpinning) or possibly have unspecified other impact by leveraging guest OS privileges. NOTE: this vulnerability exists because of an incorrect fix for CVE-2014-3601.'}] | 2020-08-13T19:37Z | 2014-11-10T11:55Z | Improper Restriction of Operations within the Bounds of a Memory Buffer | The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. |
Certain languages allow direct addressing of memory locations and do not automatically ensure that these locations are valid for the memory buffer that is being referenced. This can cause read or write operations to be performed on memory locations that may be associated with other variables, data structures, or internal program data.
As a result, an attacker may be able to execute arbitrary code, alter the intended control flow, read sensitive information, or cause the system to crash.
| https://cwe.mitre.org/data/definitions/119.html | 0 | Quentin Casasnovas | 2014-10-17 22:55:59+02:00 | kvm: fix excessive pages un-pinning in kvm_iommu_map error path.
The third parameter of kvm_unpin_pages() when called from
kvm_iommu_map_pages() is wrong, it should be the number of pages to un-pin
and not the page size.
This error was facilitated with an inconsistent API: kvm_pin_pages() takes
a size, but kvn_unpin_pages() takes a number of pages, so fix the problem
by matching the two.
This was introduced by commit 350b8bd ("kvm: iommu: fix the third parameter
of kvm_iommu_put_pages (CVE-2014-3601)"), which fixes the lack of
un-pinning for pages intended to be un-pinned (i.e. memory leak) but
unfortunately potentially aggravated the number of pages we un-pin that
should have stayed pinned. As far as I understand though, the same
practical mitigations apply.
This issue was found during review of Red Hat 6.6 patches to prepare
Ksplice rebootless updates.
Thanks to Vegard for his time on a late Friday evening to help me in
understanding this code.
Fixes: 350b8bd ("kvm: iommu: fix the third parameter of... (CVE-2014-3601)")
Cc: [email protected]
Signed-off-by: Quentin Casasnovas <[email protected]>
Signed-off-by: Vegard Nossum <[email protected]>
Signed-off-by: Jamie Iles <[email protected]>
Reviewed-by: Sasha Levin <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | 3d32e4dbe71374a6780eaf51d719d76f9a9bf22f | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | kvm_pin_pages | kvm_pin_pages( struct kvm_memory_slot * slot , gfn_t gfn , unsigned long size) | ['slot', 'gfn', 'size'] | static pfn_t kvm_pin_pages(struct kvm_memory_slot *slot, gfn_t gfn,
unsigned long size)
{
gfn_t end_gfn;
pfn_t pfn;
pfn = gfn_to_pfn_memslot(slot, gfn);
end_gfn = gfn + (size >> PAGE_SHIFT);
gfn += 1;
if (is_error_noslot_pfn(pfn))
return pfn;
while (gfn < end_gfn)
gfn_to_pfn_memslot(slot, gfn++);
return pfn;
} | 73 | True | 1 |
|
CVE-2014-7825 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/11/06/11', 'name': '[oss-security] 20141106 Exploitable issues in Linux perf/ftrace subsystems', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1943.html', 'name': 'RHSA-2014:1943', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70972', 'name': '70972', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/98557', 'name': 'linux-kernel-cve20147825-dos(98557)', 'refsource': 'XF', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-125'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the perf subsystem, which allows local users to cause a denial of service (out-of-bounds read and OOPS) or bypass the ASLR protection mechanism via a crafted application.'}] | 2020-08-14T18:17Z | 2014-11-10T11:55Z | Out-of-bounds Read | The software reads data past the end, or before the beginning, of the intended buffer. | Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
| https://cwe.mitre.org/data/definitions/125.html | 0 | Rabin Vincent | 2014-10-29 23:06:58+01:00 | tracing/syscalls: Ignore numbers outside NR_syscalls' range
ARM has some private syscalls (for example, set_tls(2)) which lie
outside the range of NR_syscalls. If any of these are called while
syscall tracing is being performed, out-of-bounds array access will
occur in the ftrace and perf sys_{enter,exit} handlers.
# trace-cmd record -e raw_syscalls:* true && trace-cmd report
...
true-653 [000] 384.675777: sys_enter: NR 192 (0, 1000, 3, 4000022, ffffffff, 0)
true-653 [000] 384.675812: sys_exit: NR 192 = 1995915264
true-653 [000] 384.675971: sys_enter: NR 983045 (76f74480, 76f74000, 76f74b28, 76f74480, 76f76f74, 1)
true-653 [000] 384.675988: sys_exit: NR 983045 = 0
...
# trace-cmd record -e syscalls:* true
[ 17.289329] Unable to handle kernel paging request at virtual address aaaaaace
[ 17.289590] pgd = 9e71c000
[ 17.289696] [aaaaaace] *pgd=00000000
[ 17.289985] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 17.290169] Modules linked in:
[ 17.290391] CPU: 0 PID: 704 Comm: true Not tainted 3.18.0-rc2+ #21
[ 17.290585] task: 9f4dab00 ti: 9e710000 task.ti: 9e710000
[ 17.290747] PC is at ftrace_syscall_enter+0x48/0x1f8
[ 17.290866] LR is at syscall_trace_enter+0x124/0x184
Fix this by ignoring out-of-NR_syscalls-bounds syscall numbers.
Commit cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
added the check for less than zero, but it should have also checked
for greater than NR_syscalls.
Link: http://lkml.kernel.org/p/[email protected]
Fixes: cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
Cc: [email protected] # 2.6.33+
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]> | 086ba77a6db00ed858ff07451bedee197df868c9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ftrace_syscall_enter | ftrace_syscall_enter( void * data , struct pt_regs * regs , long id) | ['data', 'regs', 'id'] | static void ftrace_syscall_enter(void *data, struct pt_regs *regs, long id)
{
struct trace_array *tr = data;
struct ftrace_event_file *ftrace_file;
struct syscall_trace_enter *entry;
struct syscall_metadata *sys_data;
struct ring_buffer_event *event;
struct ring_buffer *buffer;
unsigned long irq_flags;
int pc;
int syscall_nr;
int size;
syscall_nr = trace_get_syscall_nr(current, regs);
if (syscall_nr < 0)
return;
/* Here we're inside tp handler's rcu_read_lock_sched (__DO_TRACE) */
ftrace_file = rcu_dereference_sched(tr->enter_syscall_files[syscall_nr]);
if (!ftrace_file)
return;
if (ftrace_trigger_soft_disabled(ftrace_file))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
if (!sys_data)
return;
size = sizeof(*entry) + sizeof(unsigned long) * sys_data->nb_args;
local_save_flags(irq_flags);
pc = preempt_count();
buffer = tr->trace_buffer.buffer;
event = trace_buffer_lock_reserve(buffer,
sys_data->enter_event->event.type, size, irq_flags, pc);
if (!event)
return;
entry = ring_buffer_event_data(event);
entry->nr = syscall_nr;
syscall_get_arguments(current, regs, 0, sys_data->nb_args, entry->args);
event_trigger_unlock_commit(ftrace_file, buffer, event, entry,
irq_flags, pc);
} | 230 | True | 1 |
|
CVE-2014-7826 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/11/06/11', 'name': '[oss-security] 20141106 Exploitable issues in Linux perf/ftrace subsystems', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1943.html', 'name': 'RHSA-2014:1943', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70971', 'name': '70971', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/98556', 'name': 'linux-kernel-cve20147826-dos(98556)', 'refsource': 'XF', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the ftrace subsystem, which allows local users to gain privileges or cause a denial of service (invalid pointer dereference) via a crafted application.'}] | 2020-08-14T18:19Z | 2014-11-10T11:55Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | Rabin Vincent | 2014-10-29 23:06:58+01:00 | tracing/syscalls: Ignore numbers outside NR_syscalls' range
ARM has some private syscalls (for example, set_tls(2)) which lie
outside the range of NR_syscalls. If any of these are called while
syscall tracing is being performed, out-of-bounds array access will
occur in the ftrace and perf sys_{enter,exit} handlers.
# trace-cmd record -e raw_syscalls:* true && trace-cmd report
...
true-653 [000] 384.675777: sys_enter: NR 192 (0, 1000, 3, 4000022, ffffffff, 0)
true-653 [000] 384.675812: sys_exit: NR 192 = 1995915264
true-653 [000] 384.675971: sys_enter: NR 983045 (76f74480, 76f74000, 76f74b28, 76f74480, 76f76f74, 1)
true-653 [000] 384.675988: sys_exit: NR 983045 = 0
...
# trace-cmd record -e syscalls:* true
[ 17.289329] Unable to handle kernel paging request at virtual address aaaaaace
[ 17.289590] pgd = 9e71c000
[ 17.289696] [aaaaaace] *pgd=00000000
[ 17.289985] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 17.290169] Modules linked in:
[ 17.290391] CPU: 0 PID: 704 Comm: true Not tainted 3.18.0-rc2+ #21
[ 17.290585] task: 9f4dab00 ti: 9e710000 task.ti: 9e710000
[ 17.290747] PC is at ftrace_syscall_enter+0x48/0x1f8
[ 17.290866] LR is at syscall_trace_enter+0x124/0x184
Fix this by ignoring out-of-NR_syscalls-bounds syscall numbers.
Commit cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
added the check for less than zero, but it should have also checked
for greater than NR_syscalls.
Link: http://lkml.kernel.org/p/[email protected]
Fixes: cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
Cc: [email protected] # 2.6.33+
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]> | 086ba77a6db00ed858ff07451bedee197df868c9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ftrace_syscall_enter | ftrace_syscall_enter( void * data , struct pt_regs * regs , long id) | ['data', 'regs', 'id'] | static void ftrace_syscall_enter(void *data, struct pt_regs *regs, long id)
{
struct trace_array *tr = data;
struct ftrace_event_file *ftrace_file;
struct syscall_trace_enter *entry;
struct syscall_metadata *sys_data;
struct ring_buffer_event *event;
struct ring_buffer *buffer;
unsigned long irq_flags;
int pc;
int syscall_nr;
int size;
syscall_nr = trace_get_syscall_nr(current, regs);
if (syscall_nr < 0)
return;
/* Here we're inside tp handler's rcu_read_lock_sched (__DO_TRACE) */
ftrace_file = rcu_dereference_sched(tr->enter_syscall_files[syscall_nr]);
if (!ftrace_file)
return;
if (ftrace_trigger_soft_disabled(ftrace_file))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
if (!sys_data)
return;
size = sizeof(*entry) + sizeof(unsigned long) * sys_data->nb_args;
local_save_flags(irq_flags);
pc = preempt_count();
buffer = tr->trace_buffer.buffer;
event = trace_buffer_lock_reserve(buffer,
sys_data->enter_event->event.type, size, irq_flags, pc);
if (!event)
return;
entry = ring_buffer_event_data(event);
entry->nr = syscall_nr;
syscall_get_arguments(current, regs, 0, sys_data->nb_args, entry->args);
event_trigger_unlock_commit(ftrace_file, buffer, event, entry,
irq_flags, pc);
} | 230 | True | 1 |
|
CVE-2014-7825 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/11/06/11', 'name': '[oss-security] 20141106 Exploitable issues in Linux perf/ftrace subsystems', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1943.html', 'name': 'RHSA-2014:1943', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70972', 'name': '70972', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/98557', 'name': 'linux-kernel-cve20147825-dos(98557)', 'refsource': 'XF', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-125'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the perf subsystem, which allows local users to cause a denial of service (out-of-bounds read and OOPS) or bypass the ASLR protection mechanism via a crafted application.'}] | 2020-08-14T18:17Z | 2014-11-10T11:55Z | Out-of-bounds Read | The software reads data past the end, or before the beginning, of the intended buffer. | Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
| https://cwe.mitre.org/data/definitions/125.html | 0 | Rabin Vincent | 2014-10-29 23:06:58+01:00 | tracing/syscalls: Ignore numbers outside NR_syscalls' range
ARM has some private syscalls (for example, set_tls(2)) which lie
outside the range of NR_syscalls. If any of these are called while
syscall tracing is being performed, out-of-bounds array access will
occur in the ftrace and perf sys_{enter,exit} handlers.
# trace-cmd record -e raw_syscalls:* true && trace-cmd report
...
true-653 [000] 384.675777: sys_enter: NR 192 (0, 1000, 3, 4000022, ffffffff, 0)
true-653 [000] 384.675812: sys_exit: NR 192 = 1995915264
true-653 [000] 384.675971: sys_enter: NR 983045 (76f74480, 76f74000, 76f74b28, 76f74480, 76f76f74, 1)
true-653 [000] 384.675988: sys_exit: NR 983045 = 0
...
# trace-cmd record -e syscalls:* true
[ 17.289329] Unable to handle kernel paging request at virtual address aaaaaace
[ 17.289590] pgd = 9e71c000
[ 17.289696] [aaaaaace] *pgd=00000000
[ 17.289985] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 17.290169] Modules linked in:
[ 17.290391] CPU: 0 PID: 704 Comm: true Not tainted 3.18.0-rc2+ #21
[ 17.290585] task: 9f4dab00 ti: 9e710000 task.ti: 9e710000
[ 17.290747] PC is at ftrace_syscall_enter+0x48/0x1f8
[ 17.290866] LR is at syscall_trace_enter+0x124/0x184
Fix this by ignoring out-of-NR_syscalls-bounds syscall numbers.
Commit cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
added the check for less than zero, but it should have also checked
for greater than NR_syscalls.
Link: http://lkml.kernel.org/p/[email protected]
Fixes: cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
Cc: [email protected] # 2.6.33+
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]> | 086ba77a6db00ed858ff07451bedee197df868c9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ftrace_syscall_exit | ftrace_syscall_exit( void * data , struct pt_regs * regs , long ret) | ['data', 'regs', 'ret'] | static void ftrace_syscall_exit(void *data, struct pt_regs *regs, long ret)
{
struct trace_array *tr = data;
struct ftrace_event_file *ftrace_file;
struct syscall_trace_exit *entry;
struct syscall_metadata *sys_data;
struct ring_buffer_event *event;
struct ring_buffer *buffer;
unsigned long irq_flags;
int pc;
int syscall_nr;
syscall_nr = trace_get_syscall_nr(current, regs);
if (syscall_nr < 0)
return;
/* Here we're inside tp handler's rcu_read_lock_sched (__DO_TRACE()) */
ftrace_file = rcu_dereference_sched(tr->exit_syscall_files[syscall_nr]);
if (!ftrace_file)
return;
if (ftrace_trigger_soft_disabled(ftrace_file))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
if (!sys_data)
return;
local_save_flags(irq_flags);
pc = preempt_count();
buffer = tr->trace_buffer.buffer;
event = trace_buffer_lock_reserve(buffer,
sys_data->exit_event->event.type, sizeof(*entry),
irq_flags, pc);
if (!event)
return;
entry = ring_buffer_event_data(event);
entry->nr = syscall_nr;
entry->ret = syscall_get_return_value(current, regs);
event_trigger_unlock_commit(ftrace_file, buffer, event, entry,
irq_flags, pc);
} | 207 | True | 1 |
|
CVE-2014-7826 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/11/06/11', 'name': '[oss-security] 20141106 Exploitable issues in Linux perf/ftrace subsystems', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1943.html', 'name': 'RHSA-2014:1943', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70971', 'name': '70971', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/98556', 'name': 'linux-kernel-cve20147826-dos(98556)', 'refsource': 'XF', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the ftrace subsystem, which allows local users to gain privileges or cause a denial of service (invalid pointer dereference) via a crafted application.'}] | 2020-08-14T18:19Z | 2014-11-10T11:55Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | Rabin Vincent | 2014-10-29 23:06:58+01:00 | tracing/syscalls: Ignore numbers outside NR_syscalls' range
ARM has some private syscalls (for example, set_tls(2)) which lie
outside the range of NR_syscalls. If any of these are called while
syscall tracing is being performed, out-of-bounds array access will
occur in the ftrace and perf sys_{enter,exit} handlers.
# trace-cmd record -e raw_syscalls:* true && trace-cmd report
...
true-653 [000] 384.675777: sys_enter: NR 192 (0, 1000, 3, 4000022, ffffffff, 0)
true-653 [000] 384.675812: sys_exit: NR 192 = 1995915264
true-653 [000] 384.675971: sys_enter: NR 983045 (76f74480, 76f74000, 76f74b28, 76f74480, 76f76f74, 1)
true-653 [000] 384.675988: sys_exit: NR 983045 = 0
...
# trace-cmd record -e syscalls:* true
[ 17.289329] Unable to handle kernel paging request at virtual address aaaaaace
[ 17.289590] pgd = 9e71c000
[ 17.289696] [aaaaaace] *pgd=00000000
[ 17.289985] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 17.290169] Modules linked in:
[ 17.290391] CPU: 0 PID: 704 Comm: true Not tainted 3.18.0-rc2+ #21
[ 17.290585] task: 9f4dab00 ti: 9e710000 task.ti: 9e710000
[ 17.290747] PC is at ftrace_syscall_enter+0x48/0x1f8
[ 17.290866] LR is at syscall_trace_enter+0x124/0x184
Fix this by ignoring out-of-NR_syscalls-bounds syscall numbers.
Commit cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
added the check for less than zero, but it should have also checked
for greater than NR_syscalls.
Link: http://lkml.kernel.org/p/[email protected]
Fixes: cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
Cc: [email protected] # 2.6.33+
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]> | 086ba77a6db00ed858ff07451bedee197df868c9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ftrace_syscall_exit | ftrace_syscall_exit( void * data , struct pt_regs * regs , long ret) | ['data', 'regs', 'ret'] | static void ftrace_syscall_exit(void *data, struct pt_regs *regs, long ret)
{
struct trace_array *tr = data;
struct ftrace_event_file *ftrace_file;
struct syscall_trace_exit *entry;
struct syscall_metadata *sys_data;
struct ring_buffer_event *event;
struct ring_buffer *buffer;
unsigned long irq_flags;
int pc;
int syscall_nr;
syscall_nr = trace_get_syscall_nr(current, regs);
if (syscall_nr < 0)
return;
/* Here we're inside tp handler's rcu_read_lock_sched (__DO_TRACE()) */
ftrace_file = rcu_dereference_sched(tr->exit_syscall_files[syscall_nr]);
if (!ftrace_file)
return;
if (ftrace_trigger_soft_disabled(ftrace_file))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
if (!sys_data)
return;
local_save_flags(irq_flags);
pc = preempt_count();
buffer = tr->trace_buffer.buffer;
event = trace_buffer_lock_reserve(buffer,
sys_data->exit_event->event.type, sizeof(*entry),
irq_flags, pc);
if (!event)
return;
entry = ring_buffer_event_data(event);
entry->nr = syscall_nr;
entry->ret = syscall_get_return_value(current, regs);
event_trigger_unlock_commit(ftrace_file, buffer, event, entry,
irq_flags, pc);
} | 207 | True | 1 |
|
CVE-2014-7825 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/11/06/11', 'name': '[oss-security] 20141106 Exploitable issues in Linux perf/ftrace subsystems', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1943.html', 'name': 'RHSA-2014:1943', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70972', 'name': '70972', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/98557', 'name': 'linux-kernel-cve20147825-dos(98557)', 'refsource': 'XF', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-125'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the perf subsystem, which allows local users to cause a denial of service (out-of-bounds read and OOPS) or bypass the ASLR protection mechanism via a crafted application.'}] | 2020-08-14T18:17Z | 2014-11-10T11:55Z | Out-of-bounds Read | The software reads data past the end, or before the beginning, of the intended buffer. | Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
| https://cwe.mitre.org/data/definitions/125.html | 0 | Rabin Vincent | 2014-10-29 23:06:58+01:00 | tracing/syscalls: Ignore numbers outside NR_syscalls' range
ARM has some private syscalls (for example, set_tls(2)) which lie
outside the range of NR_syscalls. If any of these are called while
syscall tracing is being performed, out-of-bounds array access will
occur in the ftrace and perf sys_{enter,exit} handlers.
# trace-cmd record -e raw_syscalls:* true && trace-cmd report
...
true-653 [000] 384.675777: sys_enter: NR 192 (0, 1000, 3, 4000022, ffffffff, 0)
true-653 [000] 384.675812: sys_exit: NR 192 = 1995915264
true-653 [000] 384.675971: sys_enter: NR 983045 (76f74480, 76f74000, 76f74b28, 76f74480, 76f76f74, 1)
true-653 [000] 384.675988: sys_exit: NR 983045 = 0
...
# trace-cmd record -e syscalls:* true
[ 17.289329] Unable to handle kernel paging request at virtual address aaaaaace
[ 17.289590] pgd = 9e71c000
[ 17.289696] [aaaaaace] *pgd=00000000
[ 17.289985] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 17.290169] Modules linked in:
[ 17.290391] CPU: 0 PID: 704 Comm: true Not tainted 3.18.0-rc2+ #21
[ 17.290585] task: 9f4dab00 ti: 9e710000 task.ti: 9e710000
[ 17.290747] PC is at ftrace_syscall_enter+0x48/0x1f8
[ 17.290866] LR is at syscall_trace_enter+0x124/0x184
Fix this by ignoring out-of-NR_syscalls-bounds syscall numbers.
Commit cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
added the check for less than zero, but it should have also checked
for greater than NR_syscalls.
Link: http://lkml.kernel.org/p/[email protected]
Fixes: cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
Cc: [email protected] # 2.6.33+
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]> | 086ba77a6db00ed858ff07451bedee197df868c9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_syscall_enter | perf_syscall_enter( void * ignore , struct pt_regs * regs , long id) | ['ignore', 'regs', 'id'] | static void perf_syscall_enter(void *ignore, struct pt_regs *regs, long id)
{
struct syscall_metadata *sys_data;
struct syscall_trace_enter *rec;
struct hlist_head *head;
int syscall_nr;
int rctx;
int size;
syscall_nr = trace_get_syscall_nr(current, regs);
if (syscall_nr < 0)
return;
if (!test_bit(syscall_nr, enabled_perf_enter_syscalls))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
if (!sys_data)
return;
head = this_cpu_ptr(sys_data->enter_event->perf_events);
if (hlist_empty(head))
return;
/* get the size after alignment with the u32 buffer size field */
size = sizeof(unsigned long) * sys_data->nb_args + sizeof(*rec);
size = ALIGN(size + sizeof(u32), sizeof(u64));
size -= sizeof(u32);
rec = (struct syscall_trace_enter *)perf_trace_buf_prepare(size,
sys_data->enter_event->event.type, regs, &rctx);
if (!rec)
return;
rec->nr = syscall_nr;
syscall_get_arguments(current, regs, 0, sys_data->nb_args,
(unsigned long *)&rec->args);
perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head, NULL);
} | 225 | True | 1 |
|
CVE-2014-7826 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/11/06/11', 'name': '[oss-security] 20141106 Exploitable issues in Linux perf/ftrace subsystems', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1943.html', 'name': 'RHSA-2014:1943', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70971', 'name': '70971', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/98556', 'name': 'linux-kernel-cve20147826-dos(98556)', 'refsource': 'XF', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the ftrace subsystem, which allows local users to gain privileges or cause a denial of service (invalid pointer dereference) via a crafted application.'}] | 2020-08-14T18:19Z | 2014-11-10T11:55Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | Rabin Vincent | 2014-10-29 23:06:58+01:00 | tracing/syscalls: Ignore numbers outside NR_syscalls' range
ARM has some private syscalls (for example, set_tls(2)) which lie
outside the range of NR_syscalls. If any of these are called while
syscall tracing is being performed, out-of-bounds array access will
occur in the ftrace and perf sys_{enter,exit} handlers.
# trace-cmd record -e raw_syscalls:* true && trace-cmd report
...
true-653 [000] 384.675777: sys_enter: NR 192 (0, 1000, 3, 4000022, ffffffff, 0)
true-653 [000] 384.675812: sys_exit: NR 192 = 1995915264
true-653 [000] 384.675971: sys_enter: NR 983045 (76f74480, 76f74000, 76f74b28, 76f74480, 76f76f74, 1)
true-653 [000] 384.675988: sys_exit: NR 983045 = 0
...
# trace-cmd record -e syscalls:* true
[ 17.289329] Unable to handle kernel paging request at virtual address aaaaaace
[ 17.289590] pgd = 9e71c000
[ 17.289696] [aaaaaace] *pgd=00000000
[ 17.289985] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 17.290169] Modules linked in:
[ 17.290391] CPU: 0 PID: 704 Comm: true Not tainted 3.18.0-rc2+ #21
[ 17.290585] task: 9f4dab00 ti: 9e710000 task.ti: 9e710000
[ 17.290747] PC is at ftrace_syscall_enter+0x48/0x1f8
[ 17.290866] LR is at syscall_trace_enter+0x124/0x184
Fix this by ignoring out-of-NR_syscalls-bounds syscall numbers.
Commit cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
added the check for less than zero, but it should have also checked
for greater than NR_syscalls.
Link: http://lkml.kernel.org/p/[email protected]
Fixes: cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
Cc: [email protected] # 2.6.33+
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]> | 086ba77a6db00ed858ff07451bedee197df868c9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_syscall_enter | perf_syscall_enter( void * ignore , struct pt_regs * regs , long id) | ['ignore', 'regs', 'id'] | static void perf_syscall_enter(void *ignore, struct pt_regs *regs, long id)
{
struct syscall_metadata *sys_data;
struct syscall_trace_enter *rec;
struct hlist_head *head;
int syscall_nr;
int rctx;
int size;
syscall_nr = trace_get_syscall_nr(current, regs);
if (syscall_nr < 0)
return;
if (!test_bit(syscall_nr, enabled_perf_enter_syscalls))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
if (!sys_data)
return;
head = this_cpu_ptr(sys_data->enter_event->perf_events);
if (hlist_empty(head))
return;
/* get the size after alignment with the u32 buffer size field */
size = sizeof(unsigned long) * sys_data->nb_args + sizeof(*rec);
size = ALIGN(size + sizeof(u32), sizeof(u64));
size -= sizeof(u32);
rec = (struct syscall_trace_enter *)perf_trace_buf_prepare(size,
sys_data->enter_event->event.type, regs, &rctx);
if (!rec)
return;
rec->nr = syscall_nr;
syscall_get_arguments(current, regs, 0, sys_data->nb_args,
(unsigned long *)&rec->args);
perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head, NULL);
} | 225 | True | 1 |
|
CVE-2014-7825 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/11/06/11', 'name': '[oss-security] 20141106 Exploitable issues in Linux perf/ftrace subsystems', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1943.html', 'name': 'RHSA-2014:1943', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70972', 'name': '70972', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/98557', 'name': 'linux-kernel-cve20147825-dos(98557)', 'refsource': 'XF', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-125'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the perf subsystem, which allows local users to cause a denial of service (out-of-bounds read and OOPS) or bypass the ASLR protection mechanism via a crafted application.'}] | 2020-08-14T18:17Z | 2014-11-10T11:55Z | Out-of-bounds Read | The software reads data past the end, or before the beginning, of the intended buffer. | Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
| https://cwe.mitre.org/data/definitions/125.html | 0 | Rabin Vincent | 2014-10-29 23:06:58+01:00 | tracing/syscalls: Ignore numbers outside NR_syscalls' range
ARM has some private syscalls (for example, set_tls(2)) which lie
outside the range of NR_syscalls. If any of these are called while
syscall tracing is being performed, out-of-bounds array access will
occur in the ftrace and perf sys_{enter,exit} handlers.
# trace-cmd record -e raw_syscalls:* true && trace-cmd report
...
true-653 [000] 384.675777: sys_enter: NR 192 (0, 1000, 3, 4000022, ffffffff, 0)
true-653 [000] 384.675812: sys_exit: NR 192 = 1995915264
true-653 [000] 384.675971: sys_enter: NR 983045 (76f74480, 76f74000, 76f74b28, 76f74480, 76f76f74, 1)
true-653 [000] 384.675988: sys_exit: NR 983045 = 0
...
# trace-cmd record -e syscalls:* true
[ 17.289329] Unable to handle kernel paging request at virtual address aaaaaace
[ 17.289590] pgd = 9e71c000
[ 17.289696] [aaaaaace] *pgd=00000000
[ 17.289985] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 17.290169] Modules linked in:
[ 17.290391] CPU: 0 PID: 704 Comm: true Not tainted 3.18.0-rc2+ #21
[ 17.290585] task: 9f4dab00 ti: 9e710000 task.ti: 9e710000
[ 17.290747] PC is at ftrace_syscall_enter+0x48/0x1f8
[ 17.290866] LR is at syscall_trace_enter+0x124/0x184
Fix this by ignoring out-of-NR_syscalls-bounds syscall numbers.
Commit cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
added the check for less than zero, but it should have also checked
for greater than NR_syscalls.
Link: http://lkml.kernel.org/p/[email protected]
Fixes: cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
Cc: [email protected] # 2.6.33+
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]> | 086ba77a6db00ed858ff07451bedee197df868c9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_syscall_exit | perf_syscall_exit( void * ignore , struct pt_regs * regs , long ret) | ['ignore', 'regs', 'ret'] | static void perf_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
{
struct syscall_metadata *sys_data;
struct syscall_trace_exit *rec;
struct hlist_head *head;
int syscall_nr;
int rctx;
int size;
syscall_nr = trace_get_syscall_nr(current, regs);
if (syscall_nr < 0)
return;
if (!test_bit(syscall_nr, enabled_perf_exit_syscalls))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
if (!sys_data)
return;
head = this_cpu_ptr(sys_data->exit_event->perf_events);
if (hlist_empty(head))
return;
/* We can probably do that at build time */
size = ALIGN(sizeof(*rec) + sizeof(u32), sizeof(u64));
size -= sizeof(u32);
rec = (struct syscall_trace_exit *)perf_trace_buf_prepare(size,
sys_data->exit_event->event.type, regs, &rctx);
if (!rec)
return;
rec->nr = syscall_nr;
rec->ret = syscall_get_return_value(current, regs);
perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head, NULL);
} | 199 | True | 1 |
|
CVE-2014-7826 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1161565', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'https://github.com/torvalds/linux/commit/086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=086ba77a6db00ed858ff07451bedee197df868c9', 'refsource': 'CONFIRM', 'tags': ['Exploit', 'Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2014/11/06/11', 'name': '[oss-security] 20141106 Exploitable issues in Linux perf/ftrace subsystems', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1943.html', 'name': 'RHSA-2014:1943', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html', 'name': 'SUSE-SU-2015:0481', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0290.html', 'name': 'RHSA-2015:0290', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/70971', 'name': '70971', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/98556', 'name': 'linux-kernel-cve20147826-dos(98556)', 'refsource': 'XF', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-476'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.17.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:*:*:ltss:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the ftrace subsystem, which allows local users to gain privileges or cause a denial of service (invalid pointer dereference) via a crafted application.'}] | 2020-08-14T18:19Z | 2014-11-10T11:55Z | NULL Pointer Dereference | A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. | NULL pointer dereference issues can occur through a number of flaws, including race conditions, and simple programming omissions.
| https://cwe.mitre.org/data/definitions/476.html | 0 | Rabin Vincent | 2014-10-29 23:06:58+01:00 | tracing/syscalls: Ignore numbers outside NR_syscalls' range
ARM has some private syscalls (for example, set_tls(2)) which lie
outside the range of NR_syscalls. If any of these are called while
syscall tracing is being performed, out-of-bounds array access will
occur in the ftrace and perf sys_{enter,exit} handlers.
# trace-cmd record -e raw_syscalls:* true && trace-cmd report
...
true-653 [000] 384.675777: sys_enter: NR 192 (0, 1000, 3, 4000022, ffffffff, 0)
true-653 [000] 384.675812: sys_exit: NR 192 = 1995915264
true-653 [000] 384.675971: sys_enter: NR 983045 (76f74480, 76f74000, 76f74b28, 76f74480, 76f76f74, 1)
true-653 [000] 384.675988: sys_exit: NR 983045 = 0
...
# trace-cmd record -e syscalls:* true
[ 17.289329] Unable to handle kernel paging request at virtual address aaaaaace
[ 17.289590] pgd = 9e71c000
[ 17.289696] [aaaaaace] *pgd=00000000
[ 17.289985] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 17.290169] Modules linked in:
[ 17.290391] CPU: 0 PID: 704 Comm: true Not tainted 3.18.0-rc2+ #21
[ 17.290585] task: 9f4dab00 ti: 9e710000 task.ti: 9e710000
[ 17.290747] PC is at ftrace_syscall_enter+0x48/0x1f8
[ 17.290866] LR is at syscall_trace_enter+0x124/0x184
Fix this by ignoring out-of-NR_syscalls-bounds syscall numbers.
Commit cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
added the check for less than zero, but it should have also checked
for greater than NR_syscalls.
Link: http://lkml.kernel.org/p/[email protected]
Fixes: cd0980fc8add "tracing: Check invalid syscall nr while tracing syscalls"
Cc: [email protected] # 2.6.33+
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]> | 086ba77a6db00ed858ff07451bedee197df868c9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_syscall_exit | perf_syscall_exit( void * ignore , struct pt_regs * regs , long ret) | ['ignore', 'regs', 'ret'] | static void perf_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
{
struct syscall_metadata *sys_data;
struct syscall_trace_exit *rec;
struct hlist_head *head;
int syscall_nr;
int rctx;
int size;
syscall_nr = trace_get_syscall_nr(current, regs);
if (syscall_nr < 0)
return;
if (!test_bit(syscall_nr, enabled_perf_exit_syscalls))
return;
sys_data = syscall_nr_to_meta(syscall_nr);
if (!sys_data)
return;
head = this_cpu_ptr(sys_data->exit_event->perf_events);
if (hlist_empty(head))
return;
/* We can probably do that at build time */
size = ALIGN(sizeof(*rec) + sizeof(u32), sizeof(u64));
size -= sizeof(u32);
rec = (struct syscall_trace_exit *)perf_trace_buf_prepare(size,
sys_data->exit_event->event.type, regs, &rctx);
if (!rec)
return;
rec->nr = syscall_nr;
rec->ret = syscall_get_return_value(current, regs);
perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head, NULL);
} | 199 | True | 1 |
|
CVE-2014-9710 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'name': 'https://github.com/torvalds/linux/commit/5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/03/24/11', 'name': '[oss-security] 20150324 CVE request Linux kernel: fs: btrfs: non-atomic xattr replace operation', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1205079', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1205079', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html', 'name': 'SUSE-SU-2015:1489', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1032418', 'name': '1032418', 'refsource': 'SECTRACK', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The Btrfs implementation in the Linux kernel before 3.19 does not ensure that the visible xattr state is consistent with a requested replacement, which allows local users to bypass intended ACL settings and gain privileges via standard filesystem operations (1) during an xattr-replacement time window, related to a race condition, or (2) after an xattr-replacement attempt that fails because the data does not fit.'}] | 2016-12-31T02:59Z | 2015-05-27T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Filipe Manana | 2014-11-09 08:38:39+00:00 | Btrfs: make xattr replace operations atomic
Replacing a xattr consists of doing a lookup for its existing value, delete
the current value from the respective leaf, release the search path and then
finally insert the new value. This leaves a time window where readers (getxattr,
listxattrs) won't see any value for the xattr. Xattrs are used to store ACLs,
so this has security implications.
This change also fixes 2 other existing issues which were:
*) Deleting the old xattr value without verifying first if the new xattr will
fit in the existing leaf item (in case multiple xattrs are packed in the
same item due to name hash collision);
*) Returning -EEXIST when the flag XATTR_CREATE is given and the xattr doesn't
exist but we have have an existing item that packs muliple xattrs with
the same name hash as the input xattr. In this case we should return ENOSPC.
A test case for xfstests follows soon.
Thanks to Alexandre Oliva for reporting the non-atomicity of the xattr replace
implementation.
Reported-by: Alexandre Oliva <[email protected]>
Signed-off-by: Filipe Manana <[email protected]>
Signed-off-by: Chris Mason <[email protected]> | 5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | btrfs_search_slot | btrfs_search_slot( struct btrfs_trans_handle * trans , struct btrfs_root * root , struct btrfs_key * key , struct btrfs_path * p , int ins_len , int cow) | ['trans', 'root', 'key', 'p', 'ins_len', 'cow'] | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, struct btrfs_path *p, int
ins_len, int cow)
{
struct extent_buffer *b;
int slot;
int ret;
int err;
int level;
int lowest_unlock = 1;
int root_lock;
/* everything at write_lock_level or lower must be write locked */
int write_lock_level = 0;
u8 lowest_level = 0;
int min_write_lock_level;
int prev_cmp;
lowest_level = p->lowest_level;
WARN_ON(lowest_level && ins_len > 0);
WARN_ON(p->nodes[0] != NULL);
BUG_ON(!cow && ins_len);
if (ins_len < 0) {
lowest_unlock = 2;
/* when we are removing items, we might have to go up to level
* two as we update tree pointers Make sure we keep write
* for those levels as well
*/
write_lock_level = 2;
} else if (ins_len > 0) {
/*
* for inserting items, make sure we have a write lock on
* level 1 so we can update keys
*/
write_lock_level = 1;
}
if (!cow)
write_lock_level = -1;
if (cow && (p->keep_locks || p->lowest_level))
write_lock_level = BTRFS_MAX_LEVEL;
min_write_lock_level = write_lock_level;
again:
prev_cmp = -1;
/*
* we try very hard to do read locks on the root
*/
root_lock = BTRFS_READ_LOCK;
level = 0;
if (p->search_commit_root) {
/*
* the commit roots are read only
* so we always do read locks
*/
if (p->need_commit_sem)
down_read(&root->fs_info->commit_root_sem);
b = root->commit_root;
extent_buffer_get(b);
level = btrfs_header_level(b);
if (p->need_commit_sem)
up_read(&root->fs_info->commit_root_sem);
if (!p->skip_locking)
btrfs_tree_read_lock(b);
} else {
if (p->skip_locking) {
b = btrfs_root_node(root);
level = btrfs_header_level(b);
} else {
/* we don't know the level of the root node
* until we actually have it read locked
*/
b = btrfs_read_lock_root_node(root);
level = btrfs_header_level(b);
if (level <= write_lock_level) {
/* whoops, must trade for write lock */
btrfs_tree_read_unlock(b);
free_extent_buffer(b);
b = btrfs_lock_root_node(root);
root_lock = BTRFS_WRITE_LOCK;
/* the level might have changed, check again */
level = btrfs_header_level(b);
}
}
}
p->nodes[level] = b;
if (!p->skip_locking)
p->locks[level] = root_lock;
while (b) {
level = btrfs_header_level(b);
/*
* setup the path here so we can release it under lock
* contention with the cow code
*/
if (cow) {
/*
* if we don't really need to cow this block
* then we don't want to set the path blocking,
* so we test it here
*/
if (!should_cow_block(trans, root, b))
goto cow_done;
/*
* must have write locks on this node and the
* parent
*/
if (level > write_lock_level ||
(level + 1 > write_lock_level &&
level + 1 < BTRFS_MAX_LEVEL &&
p->nodes[level + 1])) {
write_lock_level = level + 1;
btrfs_release_path(p);
goto again;
}
btrfs_set_path_blocking(p);
err = btrfs_cow_block(trans, root, b,
p->nodes[level + 1],
p->slots[level + 1], &b);
if (err) {
ret = err;
goto done;
}
}
cow_done:
p->nodes[level] = b;
btrfs_clear_path_blocking(p, NULL, 0);
/*
* we have a lock on b and as long as we aren't changing
* the tree, there is no way to for the items in b to change.
* It is safe to drop the lock on our parent before we
* go through the expensive btree search on b.
*
* If we're inserting or deleting (ins_len != 0), then we might
* be changing slot zero, which may require changing the parent.
* So, we can't drop the lock until after we know which slot
* we're operating on.
*/
if (!ins_len && !p->keep_locks) {
int u = level + 1;
if (u < BTRFS_MAX_LEVEL && p->locks[u]) {
btrfs_tree_unlock_rw(p->nodes[u], p->locks[u]);
p->locks[u] = 0;
}
}
ret = key_search(b, key, level, &prev_cmp, &slot);
if (level != 0) {
int dec = 0;
if (ret && slot > 0) {
dec = 1;
slot -= 1;
}
p->slots[level] = slot;
err = setup_nodes_for_search(trans, root, p, b, level,
ins_len, &write_lock_level);
if (err == -EAGAIN)
goto again;
if (err) {
ret = err;
goto done;
}
b = p->nodes[level];
slot = p->slots[level];
/*
* slot 0 is special, if we change the key
* we have to update the parent pointer
* which means we must have a write lock
* on the parent
*/
if (slot == 0 && ins_len &&
write_lock_level < level + 1) {
write_lock_level = level + 1;
btrfs_release_path(p);
goto again;
}
unlock_up(p, level, lowest_unlock,
min_write_lock_level, &write_lock_level);
if (level == lowest_level) {
if (dec)
p->slots[level]++;
goto done;
}
err = read_block_for_search(trans, root, p,
&b, level, slot, key, 0);
if (err == -EAGAIN)
goto again;
if (err) {
ret = err;
goto done;
}
if (!p->skip_locking) {
level = btrfs_header_level(b);
if (level <= write_lock_level) {
err = btrfs_try_tree_write_lock(b);
if (!err) {
btrfs_set_path_blocking(p);
btrfs_tree_lock(b);
btrfs_clear_path_blocking(p, b,
BTRFS_WRITE_LOCK);
}
p->locks[level] = BTRFS_WRITE_LOCK;
} else {
err = btrfs_try_tree_read_lock(b);
if (!err) {
btrfs_set_path_blocking(p);
btrfs_tree_read_lock(b);
btrfs_clear_path_blocking(p, b,
BTRFS_READ_LOCK);
}
p->locks[level] = BTRFS_READ_LOCK;
}
p->nodes[level] = b;
}
} else {
p->slots[level] = slot;
if (ins_len > 0 &&
btrfs_leaf_free_space(root, b) < ins_len) {
if (write_lock_level < 1) {
write_lock_level = 1;
btrfs_release_path(p);
goto again;
}
btrfs_set_path_blocking(p);
err = split_leaf(trans, root, key,
p, ins_len, ret == 0);
btrfs_clear_path_blocking(p, NULL, 0);
BUG_ON(err > 0);
if (err) {
ret = err;
goto done;
}
}
if (!p->search_for_split)
unlock_up(p, level, lowest_unlock,
min_write_lock_level, &write_lock_level);
goto done;
}
}
ret = 1;
done:
/*
* we don't really know what they plan on doing with the path
* from here on, so for now just mark it as blocking
*/
if (!p->leave_spinning)
btrfs_set_path_blocking(p);
if (ret < 0)
btrfs_release_path(p);
return ret;
} | 1072 | True | 1 |
|
CVE-2014-9710 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'name': 'https://github.com/torvalds/linux/commit/5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/03/24/11', 'name': '[oss-security] 20150324 CVE request Linux kernel: fs: btrfs: non-atomic xattr replace operation', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1205079', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1205079', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html', 'name': 'SUSE-SU-2015:1489', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1032418', 'name': '1032418', 'refsource': 'SECTRACK', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The Btrfs implementation in the Linux kernel before 3.19 does not ensure that the visible xattr state is consistent with a requested replacement, which allows local users to bypass intended ACL settings and gain privileges via standard filesystem operations (1) during an xattr-replacement time window, related to a race condition, or (2) after an xattr-replacement attempt that fails because the data does not fit.'}] | 2016-12-31T02:59Z | 2015-05-27T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Filipe Manana | 2014-11-09 08:38:39+00:00 | Btrfs: make xattr replace operations atomic
Replacing a xattr consists of doing a lookup for its existing value, delete
the current value from the respective leaf, release the search path and then
finally insert the new value. This leaves a time window where readers (getxattr,
listxattrs) won't see any value for the xattr. Xattrs are used to store ACLs,
so this has security implications.
This change also fixes 2 other existing issues which were:
*) Deleting the old xattr value without verifying first if the new xattr will
fit in the existing leaf item (in case multiple xattrs are packed in the
same item due to name hash collision);
*) Returning -EEXIST when the flag XATTR_CREATE is given and the xattr doesn't
exist but we have have an existing item that packs muliple xattrs with
the same name hash as the input xattr. In this case we should return ENOSPC.
A test case for xfstests follows soon.
Thanks to Alexandre Oliva for reporting the non-atomicity of the xattr replace
implementation.
Reported-by: Alexandre Oliva <[email protected]>
Signed-off-by: Filipe Manana <[email protected]>
Signed-off-by: Chris Mason <[email protected]> | 5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | btrfs_match_dir_item_name | btrfs_match_dir_item_name( struct btrfs_root * root , struct btrfs_path * path , const char * name , int name_len) | ['root', 'path', 'name', 'name_len'] | static struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
struct btrfs_path *path,
const char *name, int name_len)
{
struct btrfs_dir_item *dir_item;
unsigned long name_ptr;
u32 total_len;
u32 cur = 0;
u32 this_len;
struct extent_buffer *leaf;
leaf = path->nodes[0];
dir_item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_dir_item);
if (verify_dir_item(root, leaf, dir_item))
return NULL;
total_len = btrfs_item_size_nr(leaf, path->slots[0]);
while (cur < total_len) {
this_len = sizeof(*dir_item) +
btrfs_dir_name_len(leaf, dir_item) +
btrfs_dir_data_len(leaf, dir_item);
name_ptr = (unsigned long)(dir_item + 1);
if (btrfs_dir_name_len(leaf, dir_item) == name_len &&
memcmp_extent_buffer(leaf, name, name_ptr, name_len) == 0)
return dir_item;
cur += this_len;
dir_item = (struct btrfs_dir_item *)((char *)dir_item +
this_len);
}
return NULL;
} | 194 | True | 1 |
|
CVE-2014-9710 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'name': 'https://github.com/torvalds/linux/commit/5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/03/24/11', 'name': '[oss-security] 20150324 CVE request Linux kernel: fs: btrfs: non-atomic xattr replace operation', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1205079', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1205079', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html', 'name': 'SUSE-SU-2015:1489', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1032418', 'name': '1032418', 'refsource': 'SECTRACK', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The Btrfs implementation in the Linux kernel before 3.19 does not ensure that the visible xattr state is consistent with a requested replacement, which allows local users to bypass intended ACL settings and gain privileges via standard filesystem operations (1) during an xattr-replacement time window, related to a race condition, or (2) after an xattr-replacement attempt that fails because the data does not fit.'}] | 2016-12-31T02:59Z | 2015-05-27T10:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Filipe Manana | 2014-11-09 08:38:39+00:00 | Btrfs: make xattr replace operations atomic
Replacing a xattr consists of doing a lookup for its existing value, delete
the current value from the respective leaf, release the search path and then
finally insert the new value. This leaves a time window where readers (getxattr,
listxattrs) won't see any value for the xattr. Xattrs are used to store ACLs,
so this has security implications.
This change also fixes 2 other existing issues which were:
*) Deleting the old xattr value without verifying first if the new xattr will
fit in the existing leaf item (in case multiple xattrs are packed in the
same item due to name hash collision);
*) Returning -EEXIST when the flag XATTR_CREATE is given and the xattr doesn't
exist but we have have an existing item that packs muliple xattrs with
the same name hash as the input xattr. In this case we should return ENOSPC.
A test case for xfstests follows soon.
Thanks to Alexandre Oliva for reporting the non-atomicity of the xattr replace
implementation.
Reported-by: Alexandre Oliva <[email protected]>
Signed-off-by: Filipe Manana <[email protected]>
Signed-off-by: Chris Mason <[email protected]> | 5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | do_setxattr | do_setxattr( struct btrfs_trans_handle * trans , struct inode * inode , const char * name , const void * value , size_t size , int flags) | ['trans', 'inode', 'name', 'value', 'size', 'flags'] | static int do_setxattr(struct btrfs_trans_handle *trans,
struct inode *inode, const char *name,
const void *value, size_t size, int flags)
{
struct btrfs_dir_item *di;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_path *path;
size_t name_len = strlen(name);
int ret = 0;
if (name_len + size > BTRFS_MAX_XATTR_SIZE(root))
return -ENOSPC;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
if (flags & XATTR_REPLACE) {
di = btrfs_lookup_xattr(trans, root, path, btrfs_ino(inode), name,
name_len, -1);
if (IS_ERR(di)) {
ret = PTR_ERR(di);
goto out;
} else if (!di) {
ret = -ENODATA;
goto out;
}
ret = btrfs_delete_one_dir_name(trans, root, path, di);
if (ret)
goto out;
btrfs_release_path(path);
/*
* remove the attribute
*/
if (!value)
goto out;
} else {
di = btrfs_lookup_xattr(NULL, root, path, btrfs_ino(inode),
name, name_len, 0);
if (IS_ERR(di)) {
ret = PTR_ERR(di);
goto out;
}
if (!di && !value)
goto out;
btrfs_release_path(path);
}
again:
ret = btrfs_insert_xattr_item(trans, root, path, btrfs_ino(inode),
name, name_len, value, size);
/*
* If we're setting an xattr to a new value but the new value is say
* exactly BTRFS_MAX_XATTR_SIZE, we could end up with EOVERFLOW getting
* back from split_leaf. This is because it thinks we'll be extending
* the existing item size, but we're asking for enough space to add the
* item itself. So if we get EOVERFLOW just set ret to EEXIST and let
* the rest of the function figure it out.
*/
if (ret == -EOVERFLOW)
ret = -EEXIST;
if (ret == -EEXIST) {
if (flags & XATTR_CREATE)
goto out;
/*
* We can't use the path we already have since we won't have the
* proper locking for a delete, so release the path and
* re-lookup to delete the thing.
*/
btrfs_release_path(path);
di = btrfs_lookup_xattr(trans, root, path, btrfs_ino(inode),
name, name_len, -1);
if (IS_ERR(di)) {
ret = PTR_ERR(di);
goto out;
} else if (!di) {
/* Shouldn't happen but just in case... */
btrfs_release_path(path);
goto again;
}
ret = btrfs_delete_one_dir_name(trans, root, path, di);
if (ret)
goto out;
/*
* We have a value to set, so go back and try to insert it now.
*/
if (value) {
btrfs_release_path(path);
goto again;
}
}
out:
btrfs_free_path(path);
return ret;
} | 417 | True | 1 |
|
CVE-2014-9090 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2014/11/26/5', 'name': '[oss-security] 20141126 Re: CVE Request: Linux kernel LDT handling bugs', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441', 'name': 'https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://secunia.com/advisories/62336', 'name': '62336', 'refsource': 'SECUNIA', 'tags': []}, {'url': 'http://www.debian.org/security/2014/dsa-3093', 'name': 'DSA-3093', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html', 'name': 'SUSE-SU-2015:0812', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.12:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0:rc7:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.38:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.46:*:*:*:*:*:*:*', 'cpe_name': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.7:*:*:*:*:*:arm64:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.11.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.13.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.19:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.27:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.34:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 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{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.45:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.59:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.67:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1:rc3:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.1.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.11:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.10.27:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.11.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.12.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.2:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to cause a denial of service (panic) via a modify_ldt system call, as demonstrated by sigreturn_32 in the linux-clock-tests test suite.'}] | 2015-06-04T02:01Z | 2014-11-30T01:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Andy Lutomirski | 2014-11-22 18:00:32-08:00 | x86_64, traps: Stop using IST for #SS
On a 32-bit kernel, this has no effect, since there are no IST stacks.
On a 64-bit kernel, #SS can only happen in user code, on a failed iret
to user space, a canonical violation on access via RSP or RBP, or a
genuine stack segment violation in 32-bit kernel code. The first two
cases don't need IST, and the latter two cases are unlikely fatal bugs,
and promoting them to double faults would be fine.
This fixes a bug in which the espfix64 code mishandles a stack segment
violation.
This saves 4k of memory per CPU and a tiny bit of code.
Signed-off-by: Andy Lutomirski <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Cc: [email protected]
Signed-off-by: Linus Torvalds <[email protected]> | 6f442be2fb22be02cafa606f1769fa1e6f894441 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | do_stack_segment | do_stack_segment( struct pt_regs * regs , long error_code) | ['regs', 'error_code'] | dotraplinkage void do_stack_segment(struct pt_regs *regs, long error_code)
{
enum ctx_state prev_state;
prev_state = exception_enter();
if (notify_die(DIE_TRAP, "stack segment", regs, error_code,
X86_TRAP_SS, SIGBUS) != NOTIFY_STOP) {
preempt_conditional_sti(regs);
do_trap(X86_TRAP_SS, SIGBUS, "stack segment", regs, error_code, NULL);
preempt_conditional_cli(regs);
}
exception_exit(prev_state);
} | 72 | True | 1 |
||
CVE-2014-9322 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/12/15/6', 'name': '[oss-security] 20141215 Linux kernel: multiple x86_64 vulnerabilities', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1172806', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1172806', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.5', 'name': 'https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.5', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441', 'name': 'https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://secunia.com/advisories/62336', 'name': '62336', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://www.ubuntu.com/usn/USN-2491-1', 'name': 'USN-2491-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.exploit-db.com/exploits/36266', 'name': '36266', 'refsource': 'EXPLOIT-DB', 'tags': ['Exploit', 'Third Party Advisory', 'VDB Entry']}, {'url': 'http://osvdb.org/show/osvdb/115919', 'name': '115919', 'refsource': 'OSVDB', 'tags': ['Broken Link']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html', 'name': 'SUSE-SU-2015:0812', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.zerodayinitiative.com/advisories/ZDI-16-170', 'name': 'http://www.zerodayinitiative.com/advisories/ZDI-16-170', 'refsource': 'MISC', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://help.joyent.com/entries/98788667-Security-Advisory-ZDI-CAN-3263-ZDI-CAN-3284-and-ZDI-CAN-3364-Vulnerabilities', 'name': 'https://help.joyent.com/entries/98788667-Security-Advisory-ZDI-CAN-3263-ZDI-CAN-3284-and-ZDI-CAN-3364-Vulnerabilities', 'refsource': 'CONFIRM', 'tags': ['Permissions Required', 'Third Party Advisory']}, {'url': 'http://source.android.com/security/bulletin/2016-04-02.html', 'name': 'http://source.android.com/security/bulletin/2016-04-02.html', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722450701342&w=2', 'name': 'HPSBGN03285', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722544401658&w=2', 'name': 'HPSBGN03282', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0009.html', 'name': 'RHSA-2015:0009', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-2031.html', 'name': 'RHSA-2014:2031', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-2028.html', 'name': 'RHSA-2014:2028', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-2008.html', 'name': 'RHSA-2014:2008', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1998.html', 'name': 'RHSA-2014:1998', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-269'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.17.5', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_eus:5.6:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:10:sp4:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kernel/entry_64.S in the Linux kernel before 3.17.5 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to gain privileges by triggering an IRET instruction that leads to access to a GS Base address from the wrong space.'}] | 2020-08-14T18:23Z | 2014-12-17T11:59Z | Improper Privilege Management | The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. | https://cwe.mitre.org/data/definitions/269.html | 0 | Andy Lutomirski | 2014-11-22 18:00:32-08:00 | x86_64, traps: Stop using IST for #SS
On a 32-bit kernel, this has no effect, since there are no IST stacks.
On a 64-bit kernel, #SS can only happen in user code, on a failed iret
to user space, a canonical violation on access via RSP or RBP, or a
genuine stack segment violation in 32-bit kernel code. The first two
cases don't need IST, and the latter two cases are unlikely fatal bugs,
and promoting them to double faults would be fine.
This fixes a bug in which the espfix64 code mishandles a stack segment
violation.
This saves 4k of memory per CPU and a tiny bit of code.
Signed-off-by: Andy Lutomirski <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Cc: [email protected]
Signed-off-by: Linus Torvalds <[email protected]> | 6f442be2fb22be02cafa606f1769fa1e6f894441 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | do_stack_segment | do_stack_segment( struct pt_regs * regs , long error_code) | ['regs', 'error_code'] | dotraplinkage void do_stack_segment(struct pt_regs *regs, long error_code)
{
enum ctx_state prev_state;
prev_state = exception_enter();
if (notify_die(DIE_TRAP, "stack segment", regs, error_code,
X86_TRAP_SS, SIGBUS) != NOTIFY_STOP) {
preempt_conditional_sti(regs);
do_trap(X86_TRAP_SS, SIGBUS, "stack segment", regs, error_code, NULL);
preempt_conditional_cli(regs);
}
exception_exit(prev_state);
} | 72 | True | 1 |
||
CVE-2014-9090 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2014/11/26/5', 'name': '[oss-security] 20141126 Re: CVE Request: Linux kernel LDT handling bugs', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441', 'name': 'https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://secunia.com/advisories/62336', 'name': '62336', 'refsource': 'SECUNIA', 'tags': []}, {'url': 'http://www.debian.org/security/2014/dsa-3093', 'name': 'DSA-3093', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html', 'name': 'SUSE-SU-2015:0812', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.8:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 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'cpe:2.3:o:linux:linux_kernel:3.11.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.12.13:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:3.15.2:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to cause a denial of service (panic) via a modify_ldt system call, as demonstrated by sigreturn_32 in the linux-clock-tests test suite.'}] | 2015-06-04T02:01Z | 2014-11-30T01:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Andy Lutomirski | 2014-11-22 18:00:32-08:00 | x86_64, traps: Stop using IST for #SS
On a 32-bit kernel, this has no effect, since there are no IST stacks.
On a 64-bit kernel, #SS can only happen in user code, on a failed iret
to user space, a canonical violation on access via RSP or RBP, or a
genuine stack segment violation in 32-bit kernel code. The first two
cases don't need IST, and the latter two cases are unlikely fatal bugs,
and promoting them to double faults would be fine.
This fixes a bug in which the espfix64 code mishandles a stack segment
violation.
This saves 4k of memory per CPU and a tiny bit of code.
Signed-off-by: Andy Lutomirski <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Cc: [email protected]
Signed-off-by: Linus Torvalds <[email protected]> | 6f442be2fb22be02cafa606f1769fa1e6f894441 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | trap_init | trap_init( void) | ['void'] | void __init trap_init(void)
{
int i;
#ifdef CONFIG_EISA
void __iomem *p = early_ioremap(0x0FFFD9, 4);
if (readl(p) == 'E' + ('I'<<8) + ('S'<<16) + ('A'<<24))
EISA_bus = 1;
early_iounmap(p, 4);
#endif
set_intr_gate(X86_TRAP_DE, divide_error);
set_intr_gate_ist(X86_TRAP_NMI, &nmi, NMI_STACK);
/* int4 can be called from all */
set_system_intr_gate(X86_TRAP_OF, &overflow);
set_intr_gate(X86_TRAP_BR, bounds);
set_intr_gate(X86_TRAP_UD, invalid_op);
set_intr_gate(X86_TRAP_NM, device_not_available);
#ifdef CONFIG_X86_32
set_task_gate(X86_TRAP_DF, GDT_ENTRY_DOUBLEFAULT_TSS);
#else
set_intr_gate_ist(X86_TRAP_DF, &double_fault, DOUBLEFAULT_STACK);
#endif
set_intr_gate(X86_TRAP_OLD_MF, coprocessor_segment_overrun);
set_intr_gate(X86_TRAP_TS, invalid_TSS);
set_intr_gate(X86_TRAP_NP, segment_not_present);
set_intr_gate_ist(X86_TRAP_SS, &stack_segment, STACKFAULT_STACK);
set_intr_gate(X86_TRAP_GP, general_protection);
set_intr_gate(X86_TRAP_SPURIOUS, spurious_interrupt_bug);
set_intr_gate(X86_TRAP_MF, coprocessor_error);
set_intr_gate(X86_TRAP_AC, alignment_check);
#ifdef CONFIG_X86_MCE
set_intr_gate_ist(X86_TRAP_MC, &machine_check, MCE_STACK);
#endif
set_intr_gate(X86_TRAP_XF, simd_coprocessor_error);
/* Reserve all the builtin and the syscall vector: */
for (i = 0; i < FIRST_EXTERNAL_VECTOR; i++)
set_bit(i, used_vectors);
#ifdef CONFIG_IA32_EMULATION
set_system_intr_gate(IA32_SYSCALL_VECTOR, ia32_syscall);
set_bit(IA32_SYSCALL_VECTOR, used_vectors);
#endif
#ifdef CONFIG_X86_32
set_system_trap_gate(SYSCALL_VECTOR, &system_call);
set_bit(SYSCALL_VECTOR, used_vectors);
#endif
/*
* Set the IDT descriptor to a fixed read-only location, so that the
* "sidt" instruction will not leak the location of the kernel, and
* to defend the IDT against arbitrary memory write vulnerabilities.
* It will be reloaded in cpu_init() */
__set_fixmap(FIX_RO_IDT, __pa_symbol(idt_table), PAGE_KERNEL_RO);
idt_descr.address = fix_to_virt(FIX_RO_IDT);
/*
* Should be a barrier for any external CPU state:
*/
cpu_init();
x86_init.irqs.trap_init();
#ifdef CONFIG_X86_64
memcpy(&debug_idt_table, &idt_table, IDT_ENTRIES * 16);
set_nmi_gate(X86_TRAP_DB, &debug);
set_nmi_gate(X86_TRAP_BP, &int3);
#endif
} | 312 | True | 1 |
||
CVE-2014-9322 | False | False | False | False | AV:L/AC:L/Au:N/C:C/I:C/A:C | LOCAL | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 7.2 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | False | [{'url': 'http://www.openwall.com/lists/oss-security/2014/12/15/6', 'name': '[oss-security] 20141215 Linux kernel: multiple x86_64 vulnerabilities', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1172806', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1172806', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.5', 'name': 'https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.5', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441', 'refsource': 'CONFIRM', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441', 'name': 'https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://secunia.com/advisories/62336', 'name': '62336', 'refsource': 'SECUNIA', 'tags': ['Broken Link']}, {'url': 'http://www.ubuntu.com/usn/USN-2491-1', 'name': 'USN-2491-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.exploit-db.com/exploits/36266', 'name': '36266', 'refsource': 'EXPLOIT-DB', 'tags': ['Exploit', 'Third Party Advisory', 'VDB Entry']}, {'url': 'http://osvdb.org/show/osvdb/115919', 'name': '115919', 'refsource': 'OSVDB', 'tags': ['Broken Link']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html', 'name': 'openSUSE-SU-2015:0566', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html', 'name': 'SUSE-SU-2015:0812', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.zerodayinitiative.com/advisories/ZDI-16-170', 'name': 'http://www.zerodayinitiative.com/advisories/ZDI-16-170', 'refsource': 'MISC', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://help.joyent.com/entries/98788667-Security-Advisory-ZDI-CAN-3263-ZDI-CAN-3284-and-ZDI-CAN-3364-Vulnerabilities', 'name': 'https://help.joyent.com/entries/98788667-Security-Advisory-ZDI-CAN-3263-ZDI-CAN-3284-and-ZDI-CAN-3364-Vulnerabilities', 'refsource': 'CONFIRM', 'tags': ['Permissions Required', 'Third Party Advisory']}, {'url': 'http://source.android.com/security/bulletin/2016-04-02.html', 'name': 'http://source.android.com/security/bulletin/2016-04-02.html', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722450701342&w=2', 'name': 'HPSBGN03285', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://marc.info/?l=bugtraq&m=142722544401658&w=2', 'name': 'HPSBGN03282', 'refsource': 'HP', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0009.html', 'name': 'RHSA-2015:0009', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-2031.html', 'name': 'RHSA-2014:2031', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-2028.html', 'name': 'RHSA-2014:2028', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-2008.html', 'name': 'RHSA-2014:2008', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2014-1998.html', 'name': 'RHSA-2014:1998', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-269'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.17.5', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_eus:5.6:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:suse:suse_linux_enterprise_server:10:sp4:*:*:ltss:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:6.0:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'arch/x86/kernel/entry_64.S in the Linux kernel before 3.17.5 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to gain privileges by triggering an IRET instruction that leads to access to a GS Base address from the wrong space.'}] | 2020-08-14T18:23Z | 2014-12-17T11:59Z | Improper Privilege Management | The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. | https://cwe.mitre.org/data/definitions/269.html | 0 | Andy Lutomirski | 2014-11-22 18:00:32-08:00 | x86_64, traps: Stop using IST for #SS
On a 32-bit kernel, this has no effect, since there are no IST stacks.
On a 64-bit kernel, #SS can only happen in user code, on a failed iret
to user space, a canonical violation on access via RSP or RBP, or a
genuine stack segment violation in 32-bit kernel code. The first two
cases don't need IST, and the latter two cases are unlikely fatal bugs,
and promoting them to double faults would be fine.
This fixes a bug in which the espfix64 code mishandles a stack segment
violation.
This saves 4k of memory per CPU and a tiny bit of code.
Signed-off-by: Andy Lutomirski <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Cc: [email protected]
Signed-off-by: Linus Torvalds <[email protected]> | 6f442be2fb22be02cafa606f1769fa1e6f894441 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | trap_init | trap_init( void) | ['void'] | void __init trap_init(void)
{
int i;
#ifdef CONFIG_EISA
void __iomem *p = early_ioremap(0x0FFFD9, 4);
if (readl(p) == 'E' + ('I'<<8) + ('S'<<16) + ('A'<<24))
EISA_bus = 1;
early_iounmap(p, 4);
#endif
set_intr_gate(X86_TRAP_DE, divide_error);
set_intr_gate_ist(X86_TRAP_NMI, &nmi, NMI_STACK);
/* int4 can be called from all */
set_system_intr_gate(X86_TRAP_OF, &overflow);
set_intr_gate(X86_TRAP_BR, bounds);
set_intr_gate(X86_TRAP_UD, invalid_op);
set_intr_gate(X86_TRAP_NM, device_not_available);
#ifdef CONFIG_X86_32
set_task_gate(X86_TRAP_DF, GDT_ENTRY_DOUBLEFAULT_TSS);
#else
set_intr_gate_ist(X86_TRAP_DF, &double_fault, DOUBLEFAULT_STACK);
#endif
set_intr_gate(X86_TRAP_OLD_MF, coprocessor_segment_overrun);
set_intr_gate(X86_TRAP_TS, invalid_TSS);
set_intr_gate(X86_TRAP_NP, segment_not_present);
set_intr_gate_ist(X86_TRAP_SS, &stack_segment, STACKFAULT_STACK);
set_intr_gate(X86_TRAP_GP, general_protection);
set_intr_gate(X86_TRAP_SPURIOUS, spurious_interrupt_bug);
set_intr_gate(X86_TRAP_MF, coprocessor_error);
set_intr_gate(X86_TRAP_AC, alignment_check);
#ifdef CONFIG_X86_MCE
set_intr_gate_ist(X86_TRAP_MC, &machine_check, MCE_STACK);
#endif
set_intr_gate(X86_TRAP_XF, simd_coprocessor_error);
/* Reserve all the builtin and the syscall vector: */
for (i = 0; i < FIRST_EXTERNAL_VECTOR; i++)
set_bit(i, used_vectors);
#ifdef CONFIG_IA32_EMULATION
set_system_intr_gate(IA32_SYSCALL_VECTOR, ia32_syscall);
set_bit(IA32_SYSCALL_VECTOR, used_vectors);
#endif
#ifdef CONFIG_X86_32
set_system_trap_gate(SYSCALL_VECTOR, &system_call);
set_bit(SYSCALL_VECTOR, used_vectors);
#endif
/*
* Set the IDT descriptor to a fixed read-only location, so that the
* "sidt" instruction will not leak the location of the kernel, and
* to defend the IDT against arbitrary memory write vulnerabilities.
* It will be reloaded in cpu_init() */
__set_fixmap(FIX_RO_IDT, __pa_symbol(idt_table), PAGE_KERNEL_RO);
idt_descr.address = fix_to_virt(FIX_RO_IDT);
/*
* Should be a barrier for any external CPU state:
*/
cpu_init();
x86_init.irqs.trap_init();
#ifdef CONFIG_X86_64
memcpy(&debug_idt_table, &idt_table, IDT_ENTRIES * 16);
set_nmi_gate(X86_TRAP_DB, &debug);
set_nmi_gate(X86_TRAP_BP, &int3);
#endif
} | 312 | True | 1 |
||
CVE-2013-7421 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:P/A:N | LOCAL | LOW | NONE | NONE | PARTIAL | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5d26a105b5a73e5635eae0629b42fa0a90e07b7b', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5d26a105b5a73e5635eae0629b42fa0a90e07b7b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://lkml.org/lkml/2013/3/4/70', 'name': '[linux-kernel] 20130304 Re: user ns: arbitrary module loading', 'refsource': 'MLIST', 'tags': ['Exploit', 'Third Party Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/01/24/4', 'name': '[oss-security] 20150124 Re: CVE Request: Linux kernel crypto api unprivileged arbitrary module load', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/5d26a105b5a73e5635eae0629b42fa0a90e07b7b', 'name': 'https://github.com/torvalds/linux/commit/5d26a105b5a73e5635eae0629b42fa0a90e07b7b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5', 'refsource': 'CONFIRM', 'tags': ['Release Notes', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1185469', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1185469', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu', 'name': 'https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu', 'refsource': 'MISC', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2514-1', 'name': 'USN-2514-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/72322', 'name': '72322', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.ubuntu.com/usn/USN-2513-1', 'name': 'USN-2513-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3170', 'name': 'DSA-3170', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:057', 'name': 'MDVSA-2015:057', 'refsource': 'MANDRIVA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2543-1', 'name': 'USN-2543-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2544-1', 'name': 'USN-2544-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2545-1', 'name': 'USN-2545-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2546-1', 'name': 'USN-2546-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0068.html', 'name': 'RHSA-2016:0068', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-269'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.18.5', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:5:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a module name in the salg_name field, a different vulnerability than CVE-2014-9644.'}] | 2020-05-19T14:32Z | 2015-03-02T11:59Z | Improper Privilege Management | The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. | https://cwe.mitre.org/data/definitions/269.html | 0 | Kees Cook | 2014-11-20 17:05:53-08:00 | crypto: prefix module autoloading with "crypto-"
This prefixes all crypto module loading with "crypto-" so we never run
the risk of exposing module auto-loading to userspace via a crypto API,
as demonstrated by Mathias Krause:
https://lkml.org/lkml/2013/3/4/70
Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: Herbert Xu <[email protected]> | 5d26a105b5a73e5635eae0629b42fa0a90e07b7b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | crypto_larval_lookup | crypto_larval_lookup( const char * name , u32 type , u32 mask) | ['name', 'type', 'mask'] | struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask)
{
struct crypto_alg *alg;
if (!name)
return ERR_PTR(-ENOENT);
mask &= ~(CRYPTO_ALG_LARVAL | CRYPTO_ALG_DEAD);
type &= mask;
alg = crypto_alg_lookup(name, type, mask);
if (!alg) {
request_module("%s", name);
if (!((type ^ CRYPTO_ALG_NEED_FALLBACK) & mask &
CRYPTO_ALG_NEED_FALLBACK))
request_module("%s-all", name);
alg = crypto_alg_lookup(name, type, mask);
}
if (alg)
return crypto_is_larval(alg) ? crypto_larval_wait(alg) : alg;
return crypto_larval_add(name, type, mask);
} | 129 | True | 1 |
||
CVE-2014-9644 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:P/A:N | LOCAL | LOW | NONE | NONE | PARTIAL | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.openwall.com/lists/oss-security/2015/01/24/4', 'name': '[oss-security] 20150124 Re: CVE Request: Linux kernel crypto api unprivileged arbitrary module load', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/4943ba16bbc2db05115707b3ff7b4874e9e3c560', 'name': 'https://github.com/torvalds/linux/commit/4943ba16bbc2db05115707b3ff7b4874e9e3c560', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1190546', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1190546', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5', 'refsource': 'CONFIRM', 'tags': ['Release Notes', 'Vendor Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4943ba16bbc2db05115707b3ff7b4874e9e3c560', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4943ba16bbc2db05115707b3ff7b4874e9e3c560', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu', 'name': 'https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu', 'refsource': 'MISC', 'tags': ['Permissions Required']}, {'url': 'http://www.securityfocus.com/bid/72320', 'name': '72320', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.ubuntu.com/usn/USN-2514-1', 'name': 'USN-2514-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2513-1', 'name': 'USN-2513-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3170', 'name': 'DSA-3170', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:057', 'name': 'MDVSA-2015:057', 'refsource': 'MANDRIVA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2543-1', 'name': 'USN-2543-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2544-1', 'name': 'USN-2544-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2545-1', 'name': 'USN-2545-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2546-1', 'name': 'USN-2546-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2016-0068.html', 'name': 'RHSA-2016:0068', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-269'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.18.5', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:5:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a parenthesized module template expression in the salg_name field, as demonstrated by the vfat(aes) expression, a different vulnerability than CVE-2013-7421.'}] | 2020-05-21T13:11Z | 2015-03-02T11:59Z | Improper Privilege Management | The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. | https://cwe.mitre.org/data/definitions/269.html | 0 | Kees Cook | 2014-11-24 16:32:38-08:00 | crypto: include crypto- module prefix in template
This adds the module loading prefix "crypto-" to the template lookup
as well.
For example, attempting to load 'vfat(blowfish)' via AF_ALG now correctly
includes the "crypto-" prefix at every level, correctly rejecting "vfat":
net-pf-38
algif-hash
crypto-vfat(blowfish)
crypto-vfat(blowfish)-all
crypto-vfat
Reported-by: Mathias Krause <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Acked-by: Mathias Krause <[email protected]>
Signed-off-by: Herbert Xu <[email protected]> | 4943ba16bbc2db05115707b3ff7b4874e9e3c560 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | crypto_lookup_template | crypto_lookup_template( const char * name) | ['name'] | struct crypto_template *crypto_lookup_template(const char *name)
{
return try_then_request_module(__crypto_lookup_template(name), "%s",
name);
} | 22 | True | 1 |
||
CVE-2014-9683 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:P/A:P | LOCAL | LOW | NONE | NONE | PARTIAL | PARTIAL | 3.6 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/942080643bce061c3dd9d5718d3b745dcb39a8bc', 'name': 'https://github.com/torvalds/linux/commit/942080643bce061c3dd9d5718d3b745dcb39a8bc', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1193830', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1193830', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/02/17/9', 'name': '[oss-security] 20150217 Re: CVE request: Linux kernel ecryptfs 1-byte overwrite', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=942080643bce061c3dd9d5718d3b745dcb39a8bc', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=942080643bce061c3dd9d5718d3b745dcb39a8bc', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2518-1', 'name': 'USN-2518-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2515-1', 'name': 'USN-2515-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2516-1', 'name': 'USN-2516-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2517-1', 'name': 'USN-2517-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/72643', 'name': '72643', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1031860', 'name': '1031860', 'refsource': 'SECTRACK', 'tags': []}, {'url': 'http://www.debian.org/security/2015/dsa-3170', 'name': 'DSA-3170', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2541-1', 'name': 'USN-2541-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2542-1', 'name': 'USN-2542-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html', 'name': 'SUSE-SU-2015:1478', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-1272.html', 'name': 'RHSA-2015:1272', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-189'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Off-by-one error in the ecryptfs_decode_from_filename function in fs/ecryptfs/crypto.c in the eCryptfs subsystem in the Linux kernel before 3.18.2 allows local users to cause a denial of service (buffer overflow and system crash) or possibly gain privileges via a crafted filename.'}] | 2016-12-24T02:59Z | 2015-03-03T11:59Z | Numeric Errors | Weaknesses in this category are related to improper calculation or conversion of numbers. | https://cwe.mitre.org/data/definitions/189.html | 1 | Michael Halcrow | 2014-11-26 09:09:16-08:00 | eCryptfs: Remove buggy and unnecessary write in file name decode routine
Dmitry Chernenkov used KASAN to discover that eCryptfs writes past the
end of the allocated buffer during encrypted filename decoding. This
fix corrects the issue by getting rid of the unnecessary 0 write when
the current bit offset is 2.
Signed-off-by: Michael Halcrow <[email protected]>
Reported-by: Dmitry Chernenkov <[email protected]>
Suggested-by: Kees Cook <[email protected]>
Cc: [email protected] # v2.6.29+: 51ca58d eCryptfs: Filename Encryption: Encoding and encryption functions
Signed-off-by: Tyler Hicks <[email protected]> | 942080643bce061c3dd9d5718d3b745dcb39a8bc | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ecryptfs_decode_from_filename | ecryptfs_decode_from_filename( unsigned char * dst , size_t * dst_size , const unsigned char * src , size_t src_size) | ['dst', 'dst_size', 'src', 'src_size'] | ecryptfs_decode_from_filename(unsigned char *dst, size_t *dst_size,
const unsigned char *src, size_t src_size)
{
u8 current_bit_offset = 0;
size_t src_byte_offset = 0;
size_t dst_byte_offset = 0;
if (dst == NULL) {
(*dst_size) = ecryptfs_max_decoded_size(src_size);
goto out;
}
while (src_byte_offset < src_size) {
unsigned char src_byte =
filename_rev_map[(int)src[src_byte_offset]];
switch (current_bit_offset) {
case 0:
dst[dst_byte_offset] = (src_byte << 2);
current_bit_offset = 6;
break;
case 6:
dst[dst_byte_offset++] |= (src_byte >> 4);
dst[dst_byte_offset] = ((src_byte & 0xF)
<< 4);
current_bit_offset = 4;
break;
case 4:
dst[dst_byte_offset++] |= (src_byte >> 2);
dst[dst_byte_offset] = (src_byte << 6);
current_bit_offset = 2;
break;
case 2:
dst[dst_byte_offset++] |= (src_byte);
dst[dst_byte_offset] = 0;
current_bit_offset = 0;
break;
}
src_byte_offset++;
}
(*dst_size) = dst_byte_offset;
out:
return;
} | 220 | True | 1 |
||
CVE-2014-9419 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f647d7c155f069c1a068030255c300663516420e', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f647d7c155f069c1a068030255c300663516420e', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/f647d7c155f069c1a068030255c300663516420e', 'name': 'https://github.com/torvalds/linux/commit/f647d7c155f069c1a068030255c300663516420e', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2014/12/25/1', 'name': '[oss-security] 20141225 Re: CVE Request: Linux x86_64 userspace address leak', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1177260', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1177260', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2518-1', 'name': 'USN-2518-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2515-1', 'name': 'USN-2515-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2516-1', 'name': 'USN-2516-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2517-1', 'name': 'USN-2517-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.debian.org/security/2015/dsa-3128', 'name': 'DSA-3128', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html', 'name': 'SUSE-SU-2015:0529', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2541-1', 'name': 'USN-2541-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2542-1', 'name': 'USN-2542-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html', 'name': 'FEDORA-2015-0517', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html', 'name': 'FEDORA-2015-0515', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html', 'name': 'SUSE-SU-2015:0736', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/71794', 'name': '71794', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html', 'name': 'openSUSE-SU-2015:0714', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-1081.html', 'name': 'RHSA-2015:1081', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-200'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel through 3.18.1 does not ensure that Thread Local Storage (TLS) descriptors are loaded before proceeding with other steps, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application that reads a TLS base address.'}] | 2018-01-05T02:29Z | 2014-12-26T00:59Z | Exposure of Sensitive Information to an Unauthorized Actor | The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. |
There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker. Some kinds of sensitive information include:
private, personal information, such as personal messages, financial data, health records, geographic location, or contact details
system status and environment, such as the operating system and installed packages
business secrets and intellectual property
network status and configuration
the product's own code or internal state
metadata, e.g. logging of connections or message headers
indirect information, such as a discrepancy between two internal operations that can be observed by an outsider
Information might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected. These parties include:
the product's own users
people or organizations whose information is created or used by the product, even if they are not direct product users
the product's administrators, including the admins of the system(s) and/or networks on which the product operates
the developer
Information exposures can occur in different ways:
the code explicitly inserts sensitive information into resources or messages that are intentionally made accessible to unauthorized actors, but should not contain the information - i.e., the information should have been "scrubbed" or "sanitized"
a different weakness or mistake indirectly inserts the sensitive information into resources, such as a web script error revealing the full system path of the program.
the code manages resources that intentionally contain sensitive information, but the resources are unintentionally made accessible to unauthorized actors. In this case, the information exposure is resultant - i.e., a different weakness enabled the access to the information in the first place.
It is common practice to describe any loss of confidentiality as an "information exposure," but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read. CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.
| https://cwe.mitre.org/data/definitions/200.html | 0 | Andy Lutomirski | 2014-12-08 13:55:20-08:00 | x86_64, switch_to(): Load TLS descriptors before switching DS and ES
Otherwise, if buggy user code points DS or ES into the TLS
array, they would be corrupted after a context switch.
This also significantly improves the comments and documents some
gotchas in the code.
Before this patch, the both tests below failed. With this
patch, the es test passes, although the gsbase test still fails.
----- begin es test -----
/*
* Copyright (c) 2014 Andy Lutomirski
* GPL v2
*/
static unsigned short GDT3(int idx)
{
return (idx << 3) | 3;
}
static int create_tls(int idx, unsigned int base)
{
struct user_desc desc = {
.entry_number = idx,
.base_addr = base,
.limit = 0xfffff,
.seg_32bit = 1,
.contents = 0, /* Data, grow-up */
.read_exec_only = 0,
.limit_in_pages = 1,
.seg_not_present = 0,
.useable = 0,
};
if (syscall(SYS_set_thread_area, &desc) != 0)
err(1, "set_thread_area");
return desc.entry_number;
}
int main()
{
int idx = create_tls(-1, 0);
printf("Allocated GDT index %d\n", idx);
unsigned short orig_es;
asm volatile ("mov %%es,%0" : "=rm" (orig_es));
int errors = 0;
int total = 1000;
for (int i = 0; i < total; i++) {
asm volatile ("mov %0,%%es" : : "rm" (GDT3(idx)));
usleep(100);
unsigned short es;
asm volatile ("mov %%es,%0" : "=rm" (es));
asm volatile ("mov %0,%%es" : : "rm" (orig_es));
if (es != GDT3(idx)) {
if (errors == 0)
printf("[FAIL]\tES changed from 0x%hx to 0x%hx\n",
GDT3(idx), es);
errors++;
}
}
if (errors) {
printf("[FAIL]\tES was corrupted %d/%d times\n", errors, total);
return 1;
} else {
printf("[OK]\tES was preserved\n");
return 0;
}
}
----- end es test -----
----- begin gsbase test -----
/*
* gsbase.c, a gsbase test
* Copyright (c) 2014 Andy Lutomirski
* GPL v2
*/
static unsigned char *testptr, *testptr2;
static unsigned char read_gs_testvals(void)
{
unsigned char ret;
asm volatile ("movb %%gs:%1, %0" : "=r" (ret) : "m" (*testptr));
return ret;
}
int main()
{
int errors = 0;
testptr = mmap((void *)0x200000000UL, 1, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS, -1, 0);
if (testptr == MAP_FAILED)
err(1, "mmap");
testptr2 = mmap((void *)0x300000000UL, 1, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS, -1, 0);
if (testptr2 == MAP_FAILED)
err(1, "mmap");
*testptr = 0;
*testptr2 = 1;
if (syscall(SYS_arch_prctl, ARCH_SET_GS,
(unsigned long)testptr2 - (unsigned long)testptr) != 0)
err(1, "ARCH_SET_GS");
usleep(100);
if (read_gs_testvals() == 1) {
printf("[OK]\tARCH_SET_GS worked\n");
} else {
printf("[FAIL]\tARCH_SET_GS failed\n");
errors++;
}
asm volatile ("mov %0,%%gs" : : "r" (0));
if (read_gs_testvals() == 0) {
printf("[OK]\tWriting 0 to gs worked\n");
} else {
printf("[FAIL]\tWriting 0 to gs failed\n");
errors++;
}
usleep(100);
if (read_gs_testvals() == 0) {
printf("[OK]\tgsbase is still zero\n");
} else {
printf("[FAIL]\tgsbase was corrupted\n");
errors++;
}
return errors == 0 ? 0 : 1;
}
----- end gsbase test -----
Signed-off-by: Andy Lutomirski <[email protected]>
Cc: <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/509d27c9fec78217691c3dad91cec87e1006b34a.1418075657.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <[email protected]> | f647d7c155f069c1a068030255c300663516420e | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | __switch_to | __switch_to( struct task_struct * prev_p , struct task_struct * next_p) | ['prev_p', 'next_p'] | __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
{
struct thread_struct *prev = &prev_p->thread;
struct thread_struct *next = &next_p->thread;
int cpu = smp_processor_id();
struct tss_struct *tss = &per_cpu(init_tss, cpu);
unsigned fsindex, gsindex;
fpu_switch_t fpu;
fpu = switch_fpu_prepare(prev_p, next_p, cpu);
/*
* Reload esp0, LDT and the page table pointer:
*/
load_sp0(tss, next);
/*
* Switch DS and ES.
* This won't pick up thread selector changes, but I guess that is ok.
*/
savesegment(es, prev->es);
if (unlikely(next->es | prev->es))
loadsegment(es, next->es);
savesegment(ds, prev->ds);
if (unlikely(next->ds | prev->ds))
loadsegment(ds, next->ds);
/* We must save %fs and %gs before load_TLS() because
* %fs and %gs may be cleared by load_TLS().
*
* (e.g. xen_load_tls())
*/
savesegment(fs, fsindex);
savesegment(gs, gsindex);
load_TLS(next, cpu);
/*
* Leave lazy mode, flushing any hypercalls made here.
* This must be done before restoring TLS segments so
* the GDT and LDT are properly updated, and must be
* done before math_state_restore, so the TS bit is up
* to date.
*/
arch_end_context_switch(next_p);
/*
* Switch FS and GS.
*
* Segment register != 0 always requires a reload. Also
* reload when it has changed. When prev process used 64bit
* base always reload to avoid an information leak.
*/
if (unlikely(fsindex | next->fsindex | prev->fs)) {
loadsegment(fs, next->fsindex);
/*
* Check if the user used a selector != 0; if yes
* clear 64bit base, since overloaded base is always
* mapped to the Null selector
*/
if (fsindex)
prev->fs = 0;
}
/* when next process has a 64bit base use it */
if (next->fs)
wrmsrl(MSR_FS_BASE, next->fs);
prev->fsindex = fsindex;
if (unlikely(gsindex | next->gsindex | prev->gs)) {
load_gs_index(next->gsindex);
if (gsindex)
prev->gs = 0;
}
if (next->gs)
wrmsrl(MSR_KERNEL_GS_BASE, next->gs);
prev->gsindex = gsindex;
switch_fpu_finish(next_p, fpu);
/*
* Switch the PDA and FPU contexts.
*/
prev->usersp = this_cpu_read(old_rsp);
this_cpu_write(old_rsp, next->usersp);
this_cpu_write(current_task, next_p);
/*
* If it were not for PREEMPT_ACTIVE we could guarantee that the
* preempt_count of all tasks was equal here and this would not be
* needed.
*/
task_thread_info(prev_p)->saved_preempt_count = this_cpu_read(__preempt_count);
this_cpu_write(__preempt_count, task_thread_info(next_p)->saved_preempt_count);
this_cpu_write(kernel_stack,
(unsigned long)task_stack_page(next_p) +
THREAD_SIZE - KERNEL_STACK_OFFSET);
/*
* Now maybe reload the debug registers and handle I/O bitmaps
*/
if (unlikely(task_thread_info(next_p)->flags & _TIF_WORK_CTXSW_NEXT ||
task_thread_info(prev_p)->flags & _TIF_WORK_CTXSW_PREV))
__switch_to_xtra(prev_p, next_p, tss);
return prev_p;
} | 389 | True | 1 |
|
CVE-2014-9728 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228229', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228229', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/a1d47b262952a45aae62bd49cfaf33dd76c11a2c', 'name': 'https://github.com/torvalds/linux/commit/a1d47b262952a45aae62bd49cfaf33dd76c11a2c', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/06/02/7', 'name': '[oss-security] 20150602 CVE request Linux kernel: fs: udf heap overflow in __udf_adinicb_readpage', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/e237ec37ec154564f8690c5bd1795339955eeef9', 'name': 'https://github.com/torvalds/linux/commit/e237ec37ec154564f8690c5bd1795339955eeef9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/e159332b9af4b04d882dbcfe1bb0117f0a6d4b58', 'name': 'https://github.com/torvalds/linux/commit/e159332b9af4b04d882dbcfe1bb0117f0a6d4b58', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e159332b9af4b04d882dbcfe1bb0117f0a6d4b58', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e159332b9af4b04d882dbcfe1bb0117f0a6d4b58', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1d47b262952a45aae62bd49cfaf33dd76c11a2c', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1d47b262952a45aae62bd49cfaf33dd76c11a2c', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e237ec37ec154564f8690c5bd1795339955eeef9', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e237ec37ec154564f8690c5bd1795339955eeef9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/74964', 'name': '74964', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html', 'name': 'SUSE-SU-2015:1611', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html', 'name': 'SUSE-SU-2015:1592', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html', 'name': 'SUSE-SU-2015:1324', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-119'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The UDF filesystem implementation in the Linux kernel before 3.18.2 does not validate certain lengths, which allows local users to cause a denial of service (buffer over-read and system crash) via a crafted filesystem image, related to fs/udf/inode.c and fs/udf/symlink.c.'}] | 2016-12-22T02:59Z | 2015-08-31T10:59Z | Improper Restriction of Operations within the Bounds of a Memory Buffer | The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. |
Certain languages allow direct addressing of memory locations and do not automatically ensure that these locations are valid for the memory buffer that is being referenced. This can cause read or write operations to be performed on memory locations that may be associated with other variables, data structures, or internal program data.
As a result, an attacker may be able to execute arbitrary code, alter the intended control flow, read sensitive information, or cause the system to crash.
| https://cwe.mitre.org/data/definitions/119.html | 0 | Jan Kara | 2014-12-19 12:21:47+01:00 | udf: Verify symlink size before loading it
UDF specification allows arbitrarily large symlinks. However we support
only symlinks at most one block large. Check the length of the symlink
so that we don't access memory beyond end of the symlink block.
CC: [email protected]
Reported-by: Carl Henrik Lunde <[email protected]>
Signed-off-by: Jan Kara <[email protected]> | a1d47b262952a45aae62bd49cfaf33dd76c11a2c | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udf_symlink_filler | udf_symlink_filler( struct file * file , struct page * page) | ['file', 'page'] | static int udf_symlink_filler(struct file *file, struct page *page)
{
struct inode *inode = page->mapping->host;
struct buffer_head *bh = NULL;
unsigned char *symlink;
int err = -EIO;
unsigned char *p = kmap(page);
struct udf_inode_info *iinfo;
uint32_t pos;
iinfo = UDF_I(inode);
pos = udf_block_map(inode, 0);
down_read(&iinfo->i_data_sem);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
symlink = iinfo->i_ext.i_data + iinfo->i_lenEAttr;
} else {
bh = sb_bread(inode->i_sb, pos);
if (!bh)
goto out;
symlink = bh->b_data;
}
udf_pc_to_char(inode->i_sb, symlink, inode->i_size, p);
brelse(bh);
up_read(&iinfo->i_data_sem);
SetPageUptodate(page);
kunmap(page);
unlock_page(page);
return 0;
out:
up_read(&iinfo->i_data_sem);
SetPageError(page);
kunmap(page);
unlock_page(page);
return err;
} | 209 | True | 1 |
|
CVE-2014-9731 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/06/03/4', 'name': '[oss-security] 20150603 CVE request Linux kernel: udf: information leakage when reading symlink', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/75001', 'name': '75001', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html', 'name': 'SUSE-SU-2015:1611', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html', 'name': 'SUSE-SU-2015:1592', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html', 'name': 'SUSE-SU-2015:1324', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}, {'url': 'https://source.android.com/security/bulletin/2017-07-01', 'name': 'https://source.android.com/security/bulletin/2017-07-01', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is available for storing a symlink target's name along with a trailing \\0 character, which allows local users to obtain sensitive information via a crafted filesystem image, related to fs/udf/symlink.c and fs/udf/unicode.c."}] | 2017-07-13T01:29Z | 2015-08-31T10:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Jan Kara | 2014-12-18 22:37:50+01:00 | udf: Check path length when reading symlink
Symlink reading code does not check whether the resulting path fits into
the page provided by the generic code. This isn't as easy as just
checking the symlink size because of various encoding conversions we
perform on path. So we have to check whether there is still enough space
in the buffer on the fly.
CC: [email protected]
Reported-by: Carl Henrik Lunde <[email protected]>
Signed-off-by: Jan Kara <[email protected]> | 0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udf_readdir | udf_readdir( struct file * file , struct dir_context * ctx) | ['file', 'ctx'] | static int udf_readdir(struct file *file, struct dir_context *ctx)
{
struct inode *dir = file_inode(file);
struct udf_inode_info *iinfo = UDF_I(dir);
struct udf_fileident_bh fibh = { .sbh = NULL, .ebh = NULL};
struct fileIdentDesc *fi = NULL;
struct fileIdentDesc cfi;
int block, iblock;
loff_t nf_pos;
int flen;
unsigned char *fname = NULL;
unsigned char *nameptr;
uint16_t liu;
uint8_t lfi;
loff_t size = udf_ext0_offset(dir) + dir->i_size;
struct buffer_head *tmp, *bha[16];
struct kernel_lb_addr eloc;
uint32_t elen;
sector_t offset;
int i, num, ret = 0;
struct extent_position epos = { NULL, 0, {0, 0} };
if (ctx->pos == 0) {
if (!dir_emit_dot(file, ctx))
return 0;
ctx->pos = 1;
}
nf_pos = (ctx->pos - 1) << 2;
if (nf_pos >= size)
goto out;
fname = kmalloc(UDF_NAME_LEN, GFP_NOFS);
if (!fname) {
ret = -ENOMEM;
goto out;
}
if (nf_pos == 0)
nf_pos = udf_ext0_offset(dir);
fibh.soffset = fibh.eoffset = nf_pos & (dir->i_sb->s_blocksize - 1);
if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
if (inode_bmap(dir, nf_pos >> dir->i_sb->s_blocksize_bits,
&epos, &eloc, &elen, &offset)
!= (EXT_RECORDED_ALLOCATED >> 30)) {
ret = -ENOENT;
goto out;
}
block = udf_get_lb_pblock(dir->i_sb, &eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
epos.offset -= sizeof(struct short_ad);
else if (iinfo->i_alloc_type ==
ICBTAG_FLAG_AD_LONG)
epos.offset -= sizeof(struct long_ad);
} else {
offset = 0;
}
if (!(fibh.sbh = fibh.ebh = udf_tread(dir->i_sb, block))) {
ret = -EIO;
goto out;
}
if (!(offset & ((16 >> (dir->i_sb->s_blocksize_bits - 9)) - 1))) {
i = 16 >> (dir->i_sb->s_blocksize_bits - 9);
if (i + offset > (elen >> dir->i_sb->s_blocksize_bits))
i = (elen >> dir->i_sb->s_blocksize_bits) - offset;
for (num = 0; i > 0; i--) {
block = udf_get_lb_pblock(dir->i_sb, &eloc, offset + i);
tmp = udf_tgetblk(dir->i_sb, block);
if (tmp && !buffer_uptodate(tmp) && !buffer_locked(tmp))
bha[num++] = tmp;
else
brelse(tmp);
}
if (num) {
ll_rw_block(READA, num, bha);
for (i = 0; i < num; i++)
brelse(bha[i]);
}
}
}
while (nf_pos < size) {
struct kernel_lb_addr tloc;
ctx->pos = (nf_pos >> 2) + 1;
fi = udf_fileident_read(dir, &nf_pos, &fibh, &cfi, &epos, &eloc,
&elen, &offset);
if (!fi)
goto out;
liu = le16_to_cpu(cfi.lengthOfImpUse);
lfi = cfi.lengthFileIdent;
if (fibh.sbh == fibh.ebh) {
nameptr = fi->fileIdent + liu;
} else {
int poffset; /* Unpaded ending offset */
poffset = fibh.soffset + sizeof(struct fileIdentDesc) + liu + lfi;
if (poffset >= lfi) {
nameptr = (char *)(fibh.ebh->b_data + poffset - lfi);
} else {
nameptr = fname;
memcpy(nameptr, fi->fileIdent + liu,
lfi - poffset);
memcpy(nameptr + lfi - poffset,
fibh.ebh->b_data, poffset);
}
}
if ((cfi.fileCharacteristics & FID_FILE_CHAR_DELETED) != 0) {
if (!UDF_QUERY_FLAG(dir->i_sb, UDF_FLAG_UNDELETE))
continue;
}
if ((cfi.fileCharacteristics & FID_FILE_CHAR_HIDDEN) != 0) {
if (!UDF_QUERY_FLAG(dir->i_sb, UDF_FLAG_UNHIDE))
continue;
}
if (cfi.fileCharacteristics & FID_FILE_CHAR_PARENT) {
if (!dir_emit_dotdot(file, ctx))
goto out;
continue;
}
flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi);
if (!flen)
continue;
tloc = lelb_to_cpu(cfi.icb.extLocation);
iblock = udf_get_lb_pblock(dir->i_sb, &tloc, 0);
if (!dir_emit(ctx, fname, flen, iblock, DT_UNKNOWN))
goto out;
} /* end while */
ctx->pos = (nf_pos >> 2) + 1;
out:
if (fibh.sbh != fibh.ebh)
brelse(fibh.ebh);
brelse(fibh.sbh);
brelse(epos.bh);
kfree(fname);
return ret;
} | 986 | True | 1 |
||
CVE-2014-9731 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/06/03/4', 'name': '[oss-security] 20150603 CVE request Linux kernel: udf: information leakage when reading symlink', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/75001', 'name': '75001', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html', 'name': 'SUSE-SU-2015:1611', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html', 'name': 'SUSE-SU-2015:1592', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html', 'name': 'SUSE-SU-2015:1324', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}, {'url': 'https://source.android.com/security/bulletin/2017-07-01', 'name': 'https://source.android.com/security/bulletin/2017-07-01', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is available for storing a symlink target's name along with a trailing \\0 character, which allows local users to obtain sensitive information via a crafted filesystem image, related to fs/udf/symlink.c and fs/udf/unicode.c."}] | 2017-07-13T01:29Z | 2015-08-31T10:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Jan Kara | 2014-12-18 22:37:50+01:00 | udf: Check path length when reading symlink
Symlink reading code does not check whether the resulting path fits into
the page provided by the generic code. This isn't as easy as just
checking the symlink size because of various encoding conversions we
perform on path. So we have to check whether there is still enough space
in the buffer on the fly.
CC: [email protected]
Reported-by: Carl Henrik Lunde <[email protected]>
Signed-off-by: Jan Kara <[email protected]> | 0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udf_find_entry | udf_find_entry( struct inode * dir , const struct qstr * child , struct udf_fileident_bh * fibh , struct fileIdentDesc * cfi) | ['dir', 'child', 'fibh', 'cfi'] | static struct fileIdentDesc *udf_find_entry(struct inode *dir,
const struct qstr *child,
struct udf_fileident_bh *fibh,
struct fileIdentDesc *cfi)
{
struct fileIdentDesc *fi = NULL;
loff_t f_pos;
int block, flen;
unsigned char *fname = NULL;
unsigned char *nameptr;
uint8_t lfi;
uint16_t liu;
loff_t size;
struct kernel_lb_addr eloc;
uint32_t elen;
sector_t offset;
struct extent_position epos = {};
struct udf_inode_info *dinfo = UDF_I(dir);
int isdotdot = child->len == 2 &&
child->name[0] == '.' && child->name[1] == '.';
size = udf_ext0_offset(dir) + dir->i_size;
f_pos = udf_ext0_offset(dir);
fibh->sbh = fibh->ebh = NULL;
fibh->soffset = fibh->eoffset = f_pos & (dir->i_sb->s_blocksize - 1);
if (dinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
if (inode_bmap(dir, f_pos >> dir->i_sb->s_blocksize_bits, &epos,
&eloc, &elen, &offset) != (EXT_RECORDED_ALLOCATED >> 30))
goto out_err;
block = udf_get_lb_pblock(dir->i_sb, &eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
epos.offset -= sizeof(struct short_ad);
else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
epos.offset -= sizeof(struct long_ad);
} else
offset = 0;
fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block);
if (!fibh->sbh)
goto out_err;
}
fname = kmalloc(UDF_NAME_LEN, GFP_NOFS);
if (!fname)
goto out_err;
while (f_pos < size) {
fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &epos, &eloc,
&elen, &offset);
if (!fi)
goto out_err;
liu = le16_to_cpu(cfi->lengthOfImpUse);
lfi = cfi->lengthFileIdent;
if (fibh->sbh == fibh->ebh) {
nameptr = fi->fileIdent + liu;
} else {
int poffset; /* Unpaded ending offset */
poffset = fibh->soffset + sizeof(struct fileIdentDesc) +
liu + lfi;
if (poffset >= lfi)
nameptr = (uint8_t *)(fibh->ebh->b_data +
poffset - lfi);
else {
nameptr = fname;
memcpy(nameptr, fi->fileIdent + liu,
lfi - poffset);
memcpy(nameptr + lfi - poffset,
fibh->ebh->b_data, poffset);
}
}
if ((cfi->fileCharacteristics & FID_FILE_CHAR_DELETED) != 0) {
if (!UDF_QUERY_FLAG(dir->i_sb, UDF_FLAG_UNDELETE))
continue;
}
if ((cfi->fileCharacteristics & FID_FILE_CHAR_HIDDEN) != 0) {
if (!UDF_QUERY_FLAG(dir->i_sb, UDF_FLAG_UNHIDE))
continue;
}
if ((cfi->fileCharacteristics & FID_FILE_CHAR_PARENT) &&
isdotdot)
goto out_ok;
if (!lfi)
continue;
flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi);
if (flen && udf_match(flen, fname, child->len, child->name))
goto out_ok;
}
out_err:
fi = NULL;
if (fibh->sbh != fibh->ebh)
brelse(fibh->ebh);
brelse(fibh->sbh);
out_ok:
brelse(epos.bh);
kfree(fname);
return fi;
} | 653 | True | 1 |
||
CVE-2014-9731 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/06/03/4', 'name': '[oss-security] 20150603 CVE request Linux kernel: udf: information leakage when reading symlink', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/75001', 'name': '75001', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html', 'name': 'SUSE-SU-2015:1611', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html', 'name': 'SUSE-SU-2015:1592', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html', 'name': 'SUSE-SU-2015:1324', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}, {'url': 'https://source.android.com/security/bulletin/2017-07-01', 'name': 'https://source.android.com/security/bulletin/2017-07-01', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is available for storing a symlink target's name along with a trailing \\0 character, which allows local users to obtain sensitive information via a crafted filesystem image, related to fs/udf/symlink.c and fs/udf/unicode.c."}] | 2017-07-13T01:29Z | 2015-08-31T10:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Jan Kara | 2014-12-18 22:37:50+01:00 | udf: Check path length when reading symlink
Symlink reading code does not check whether the resulting path fits into
the page provided by the generic code. This isn't as easy as just
checking the symlink size because of various encoding conversions we
perform on path. So we have to check whether there is still enough space
in the buffer on the fly.
CC: [email protected]
Reported-by: Carl Henrik Lunde <[email protected]>
Signed-off-by: Jan Kara <[email protected]> | 0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udf_pc_to_char | udf_pc_to_char( struct super_block * sb , unsigned char * from , int fromlen , unsigned char * to) | ['sb', 'from', 'fromlen', 'to'] | static void udf_pc_to_char(struct super_block *sb, unsigned char *from,
int fromlen, unsigned char *to)
{
struct pathComponent *pc;
int elen = 0;
unsigned char *p = to;
while (elen < fromlen) {
pc = (struct pathComponent *)(from + elen);
switch (pc->componentType) {
case 1:
/*
* Symlink points to some place which should be agreed
* upon between originator and receiver of the media. Ignore.
*/
if (pc->lengthComponentIdent > 0)
break;
/* Fall through */
case 2:
p = to;
*p++ = '/';
break;
case 3:
memcpy(p, "../", 3);
p += 3;
break;
case 4:
memcpy(p, "./", 2);
p += 2;
/* that would be . - just ignore */
break;
case 5:
p += udf_get_filename(sb, pc->componentIdent, p,
pc->lengthComponentIdent);
*p++ = '/';
break;
}
elen += sizeof(struct pathComponent) + pc->lengthComponentIdent;
}
if (p > to + 1)
p[-1] = '\0';
else
p[0] = '\0';
} | 196 | True | 1 |
||
CVE-2014-9731 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/06/03/4', 'name': '[oss-security] 20150603 CVE request Linux kernel: udf: information leakage when reading symlink', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/75001', 'name': '75001', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html', 'name': 'SUSE-SU-2015:1611', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html', 'name': 'SUSE-SU-2015:1592', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html', 'name': 'SUSE-SU-2015:1324', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}, {'url': 'https://source.android.com/security/bulletin/2017-07-01', 'name': 'https://source.android.com/security/bulletin/2017-07-01', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is available for storing a symlink target's name along with a trailing \\0 character, which allows local users to obtain sensitive information via a crafted filesystem image, related to fs/udf/symlink.c and fs/udf/unicode.c."}] | 2017-07-13T01:29Z | 2015-08-31T10:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Jan Kara | 2014-12-18 22:37:50+01:00 | udf: Check path length when reading symlink
Symlink reading code does not check whether the resulting path fits into
the page provided by the generic code. This isn't as easy as just
checking the symlink size because of various encoding conversions we
perform on path. So we have to check whether there is still enough space
in the buffer on the fly.
CC: [email protected]
Reported-by: Carl Henrik Lunde <[email protected]>
Signed-off-by: Jan Kara <[email protected]> | 0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udf_symlink_filler | udf_symlink_filler( struct file * file , struct page * page) | ['file', 'page'] | static int udf_symlink_filler(struct file *file, struct page *page)
{
struct inode *inode = page->mapping->host;
struct buffer_head *bh = NULL;
unsigned char *symlink;
int err;
unsigned char *p = kmap(page);
struct udf_inode_info *iinfo;
uint32_t pos;
/* We don't support symlinks longer than one block */
if (inode->i_size > inode->i_sb->s_blocksize) {
err = -ENAMETOOLONG;
goto out_unmap;
}
iinfo = UDF_I(inode);
pos = udf_block_map(inode, 0);
down_read(&iinfo->i_data_sem);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
symlink = iinfo->i_ext.i_data + iinfo->i_lenEAttr;
} else {
bh = sb_bread(inode->i_sb, pos);
if (!bh) {
err = -EIO;
goto out_unlock_inode;
}
symlink = bh->b_data;
}
udf_pc_to_char(inode->i_sb, symlink, inode->i_size, p);
brelse(bh);
up_read(&iinfo->i_data_sem);
SetPageUptodate(page);
kunmap(page);
unlock_page(page);
return 0;
out_unlock_inode:
up_read(&iinfo->i_data_sem);
SetPageError(page);
out_unmap:
kunmap(page);
unlock_page(page);
return err;
} | 237 | True | 1 |
||
CVE-2014-9731 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/06/03/4', 'name': '[oss-security] 20150603 CVE request Linux kernel: udf: information leakage when reading symlink', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/75001', 'name': '75001', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html', 'name': 'SUSE-SU-2015:1611', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html', 'name': 'SUSE-SU-2015:1592', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html', 'name': 'SUSE-SU-2015:1324', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}, {'url': 'https://source.android.com/security/bulletin/2017-07-01', 'name': 'https://source.android.com/security/bulletin/2017-07-01', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is available for storing a symlink target's name along with a trailing \\0 character, which allows local users to obtain sensitive information via a crafted filesystem image, related to fs/udf/symlink.c and fs/udf/unicode.c."}] | 2017-07-13T01:29Z | 2015-08-31T10:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Jan Kara | 2014-12-18 22:37:50+01:00 | udf: Check path length when reading symlink
Symlink reading code does not check whether the resulting path fits into
the page provided by the generic code. This isn't as easy as just
checking the symlink size because of various encoding conversions we
perform on path. So we have to check whether there is still enough space
in the buffer on the fly.
CC: [email protected]
Reported-by: Carl Henrik Lunde <[email protected]>
Signed-off-by: Jan Kara <[email protected]> | 0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udf_get_filename | udf_get_filename( struct super_block * sb , uint8_t * sname , uint8_t * dname , int flen) | ['sb', 'sname', 'dname', 'flen'] | int udf_get_filename(struct super_block *sb, uint8_t *sname, uint8_t *dname,
int flen)
{
struct ustr *filename, *unifilename;
int len = 0;
filename = kmalloc(sizeof(struct ustr), GFP_NOFS);
if (!filename)
return 0;
unifilename = kmalloc(sizeof(struct ustr), GFP_NOFS);
if (!unifilename)
goto out1;
if (udf_build_ustr_exact(unifilename, sname, flen))
goto out2;
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
if (!udf_CS0toUTF8(filename, unifilename)) {
udf_debug("Failed in udf_get_filename: sname = %s\n",
sname);
goto out2;
}
} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
if (!udf_CS0toNLS(UDF_SB(sb)->s_nls_map, filename,
unifilename)) {
udf_debug("Failed in udf_get_filename: sname = %s\n",
sname);
goto out2;
}
} else
goto out2;
len = udf_translate_to_linux(dname, filename->u_name, filename->u_len,
unifilename->u_name, unifilename->u_len);
out2:
kfree(unifilename);
out1:
kfree(filename);
return len;
} | 207 | True | 1 |
||
CVE-2014-9731 | False | False | False | False | AV:L/AC:L/Au:N/C:P/I:N/A:N | LOCAL | LOW | NONE | PARTIAL | NONE | NONE | 2.1 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/06/03/4', 'name': '[oss-security] 20150603 CVE request Linux kernel: udf: information leakage when reading symlink', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228220', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'name': 'https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/75001', 'name': '75001', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html', 'name': 'SUSE-SU-2015:1611', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html', 'name': 'SUSE-SU-2015:1592', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html', 'name': 'SUSE-SU-2015:1324', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}, {'url': 'https://source.android.com/security/bulletin/2017-07-01', 'name': 'https://source.android.com/security/bulletin/2017-07-01', 'refsource': 'CONFIRM', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | LOW | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': "The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is available for storing a symlink target's name along with a trailing \\0 character, which allows local users to obtain sensitive information via a crafted filesystem image, related to fs/udf/symlink.c and fs/udf/unicode.c."}] | 2017-07-13T01:29Z | 2015-08-31T10:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Jan Kara | 2014-12-18 22:37:50+01:00 | udf: Check path length when reading symlink
Symlink reading code does not check whether the resulting path fits into
the page provided by the generic code. This isn't as easy as just
checking the symlink size because of various encoding conversions we
perform on path. So we have to check whether there is still enough space
in the buffer on the fly.
CC: [email protected]
Reported-by: Carl Henrik Lunde <[email protected]>
Signed-off-by: Jan Kara <[email protected]> | 0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udf_translate_to_linux | udf_translate_to_linux( uint8_t * newName , uint8_t * udfName , int udfLen , uint8_t * fidName , int fidNameLen) | ['newName', 'udfName', 'udfLen', 'fidName', 'fidNameLen'] | static int udf_translate_to_linux(uint8_t *newName, uint8_t *udfName,
int udfLen, uint8_t *fidName,
int fidNameLen)
{
int index, newIndex = 0, needsCRC = 0;
int extIndex = 0, newExtIndex = 0, hasExt = 0;
unsigned short valueCRC;
uint8_t curr;
if (udfName[0] == '.' &&
(udfLen == 1 || (udfLen == 2 && udfName[1] == '.'))) {
needsCRC = 1;
newIndex = udfLen;
memcpy(newName, udfName, udfLen);
} else {
for (index = 0; index < udfLen; index++) {
curr = udfName[index];
if (curr == '/' || curr == 0) {
needsCRC = 1;
curr = ILLEGAL_CHAR_MARK;
while (index + 1 < udfLen &&
(udfName[index + 1] == '/' ||
udfName[index + 1] == 0))
index++;
}
if (curr == EXT_MARK &&
(udfLen - index - 1) <= EXT_SIZE) {
if (udfLen == index + 1)
hasExt = 0;
else {
hasExt = 1;
extIndex = index;
newExtIndex = newIndex;
}
}
if (newIndex < 256)
newName[newIndex++] = curr;
else
needsCRC = 1;
}
}
if (needsCRC) {
uint8_t ext[EXT_SIZE];
int localExtIndex = 0;
if (hasExt) {
int maxFilenameLen;
for (index = 0;
index < EXT_SIZE && extIndex + index + 1 < udfLen;
index++) {
curr = udfName[extIndex + index + 1];
if (curr == '/' || curr == 0) {
needsCRC = 1;
curr = ILLEGAL_CHAR_MARK;
while (extIndex + index + 2 < udfLen &&
(index + 1 < EXT_SIZE &&
(udfName[extIndex + index + 2] == '/' ||
udfName[extIndex + index + 2] == 0)))
index++;
}
ext[localExtIndex++] = curr;
}
maxFilenameLen = 250 - localExtIndex;
if (newIndex > maxFilenameLen)
newIndex = maxFilenameLen;
else
newIndex = newExtIndex;
} else if (newIndex > 250)
newIndex = 250;
newName[newIndex++] = CRC_MARK;
valueCRC = crc_itu_t(0, fidName, fidNameLen);
newName[newIndex++] = hex_asc_upper_hi(valueCRC >> 8);
newName[newIndex++] = hex_asc_upper_lo(valueCRC >> 8);
newName[newIndex++] = hex_asc_upper_hi(valueCRC);
newName[newIndex++] = hex_asc_upper_lo(valueCRC);
if (hasExt) {
newName[newIndex++] = EXT_MARK;
for (index = 0; index < localExtIndex; index++)
newName[newIndex++] = ext[index];
}
}
return newIndex;
} | 515 | True | 1 |
||
CVE-2014-9728 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228229', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228229', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/a1d47b262952a45aae62bd49cfaf33dd76c11a2c', 'name': 'https://github.com/torvalds/linux/commit/a1d47b262952a45aae62bd49cfaf33dd76c11a2c', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/06/02/7', 'name': '[oss-security] 20150602 CVE request Linux kernel: fs: udf heap overflow in __udf_adinicb_readpage', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/e237ec37ec154564f8690c5bd1795339955eeef9', 'name': 'https://github.com/torvalds/linux/commit/e237ec37ec154564f8690c5bd1795339955eeef9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/e159332b9af4b04d882dbcfe1bb0117f0a6d4b58', 'name': 'https://github.com/torvalds/linux/commit/e159332b9af4b04d882dbcfe1bb0117f0a6d4b58', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e159332b9af4b04d882dbcfe1bb0117f0a6d4b58', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e159332b9af4b04d882dbcfe1bb0117f0a6d4b58', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1d47b262952a45aae62bd49cfaf33dd76c11a2c', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1d47b262952a45aae62bd49cfaf33dd76c11a2c', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e237ec37ec154564f8690c5bd1795339955eeef9', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e237ec37ec154564f8690c5bd1795339955eeef9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/74964', 'name': '74964', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html', 'name': 'SUSE-SU-2015:1611', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html', 'name': 'SUSE-SU-2015:1592', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html', 'name': 'SUSE-SU-2015:1324', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-119'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The UDF filesystem implementation in the Linux kernel before 3.18.2 does not validate certain lengths, which allows local users to cause a denial of service (buffer over-read and system crash) via a crafted filesystem image, related to fs/udf/inode.c and fs/udf/symlink.c.'}] | 2016-12-22T02:59Z | 2015-08-31T10:59Z | Improper Restriction of Operations within the Bounds of a Memory Buffer | The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. |
Certain languages allow direct addressing of memory locations and do not automatically ensure that these locations are valid for the memory buffer that is being referenced. This can cause read or write operations to be performed on memory locations that may be associated with other variables, data structures, or internal program data.
As a result, an attacker may be able to execute arbitrary code, alter the intended control flow, read sensitive information, or cause the system to crash.
| https://cwe.mitre.org/data/definitions/119.html | 0 | Jan Kara | 2014-12-19 14:27:55+01:00 | udf: Check component length before reading it
Check that length specified in a component of a symlink fits in the
input buffer we are reading. Also properly ignore component length for
component types that do not use it. Otherwise we read memory after end
of buffer for corrupted udf image.
Reported-by: Carl Henrik Lunde <[email protected]>
CC: [email protected]
Signed-off-by: Jan Kara <[email protected]> | e237ec37ec154564f8690c5bd1795339955eeef9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udf_pc_to_char | udf_pc_to_char( struct super_block * sb , unsigned char * from , int fromlen , unsigned char * to , int tolen) | ['sb', 'from', 'fromlen', 'to', 'tolen'] | static int udf_pc_to_char(struct super_block *sb, unsigned char *from,
int fromlen, unsigned char *to, int tolen)
{
struct pathComponent *pc;
int elen = 0;
int comp_len;
unsigned char *p = to;
/* Reserve one byte for terminating \0 */
tolen--;
while (elen < fromlen) {
pc = (struct pathComponent *)(from + elen);
switch (pc->componentType) {
case 1:
/*
* Symlink points to some place which should be agreed
* upon between originator and receiver of the media. Ignore.
*/
if (pc->lengthComponentIdent > 0)
break;
/* Fall through */
case 2:
if (tolen == 0)
return -ENAMETOOLONG;
p = to;
*p++ = '/';
tolen--;
break;
case 3:
if (tolen < 3)
return -ENAMETOOLONG;
memcpy(p, "../", 3);
p += 3;
tolen -= 3;
break;
case 4:
if (tolen < 2)
return -ENAMETOOLONG;
memcpy(p, "./", 2);
p += 2;
tolen -= 2;
/* that would be . - just ignore */
break;
case 5:
comp_len = udf_get_filename(sb, pc->componentIdent,
pc->lengthComponentIdent,
p, tolen);
p += comp_len;
tolen -= comp_len;
if (tolen == 0)
return -ENAMETOOLONG;
*p++ = '/';
tolen--;
break;
}
elen += sizeof(struct pathComponent) + pc->lengthComponentIdent;
}
if (p > to + 1)
p[-1] = '\0';
else
p[0] = '\0';
return 0;
} | 272 | True | 1 |
|
CVE-2014-9730 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228229', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1228229', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/06/02/7', 'name': '[oss-security] 20150602 CVE request Linux kernel: fs: udf heap overflow in __udf_adinicb_readpage', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/e237ec37ec154564f8690c5bd1795339955eeef9', 'name': 'https://github.com/torvalds/linux/commit/e237ec37ec154564f8690c5bd1795339955eeef9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e237ec37ec154564f8690c5bd1795339955eeef9', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e237ec37ec154564f8690c5bd1795339955eeef9', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/74964', 'name': '74964', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html', 'name': 'SUSE-SU-2015:1611', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html', 'name': 'SUSE-SU-2015:1592', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html', 'name': 'SUSE-SU-2015:1324', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html', 'name': 'SUSE-SU-2015:1224', 'refsource': 'SUSE', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-noinfo'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The udf_pc_to_char function in fs/udf/symlink.c in the Linux kernel before 3.18.2 relies on component lengths that are unused, which allows local users to cause a denial of service (system crash) via a crafted UDF filesystem image.'}] | 2016-12-22T02:59Z | 2015-08-31T10:59Z | Insufficient Information | There is insufficient information about the issue to classify it; details are unkown or unspecified. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Jan Kara | 2014-12-19 14:27:55+01:00 | udf: Check component length before reading it
Check that length specified in a component of a symlink fits in the
input buffer we are reading. Also properly ignore component length for
component types that do not use it. Otherwise we read memory after end
of buffer for corrupted udf image.
Reported-by: Carl Henrik Lunde <[email protected]>
CC: [email protected]
Signed-off-by: Jan Kara <[email protected]> | e237ec37ec154564f8690c5bd1795339955eeef9 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | udf_pc_to_char | udf_pc_to_char( struct super_block * sb , unsigned char * from , int fromlen , unsigned char * to , int tolen) | ['sb', 'from', 'fromlen', 'to', 'tolen'] | static int udf_pc_to_char(struct super_block *sb, unsigned char *from,
int fromlen, unsigned char *to, int tolen)
{
struct pathComponent *pc;
int elen = 0;
int comp_len;
unsigned char *p = to;
/* Reserve one byte for terminating \0 */
tolen--;
while (elen < fromlen) {
pc = (struct pathComponent *)(from + elen);
switch (pc->componentType) {
case 1:
/*
* Symlink points to some place which should be agreed
* upon between originator and receiver of the media. Ignore.
*/
if (pc->lengthComponentIdent > 0)
break;
/* Fall through */
case 2:
if (tolen == 0)
return -ENAMETOOLONG;
p = to;
*p++ = '/';
tolen--;
break;
case 3:
if (tolen < 3)
return -ENAMETOOLONG;
memcpy(p, "../", 3);
p += 3;
tolen -= 3;
break;
case 4:
if (tolen < 2)
return -ENAMETOOLONG;
memcpy(p, "./", 2);
p += 2;
tolen -= 2;
/* that would be . - just ignore */
break;
case 5:
comp_len = udf_get_filename(sb, pc->componentIdent,
pc->lengthComponentIdent,
p, tolen);
p += comp_len;
tolen -= comp_len;
if (tolen == 0)
return -ENAMETOOLONG;
*p++ = '/';
tolen--;
break;
}
elen += sizeof(struct pathComponent) + pc->lengthComponentIdent;
}
if (p > to + 1)
p[-1] = '\0';
else
p[0] = '\0';
return 0;
} | 272 | True | 1 |
|
CVE-2014-9428 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://bugs.debian.org/774155', 'name': 'http://bugs.debian.org/774155', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5b6698b0e4a37053de35cc24ee695b98a7eb712b', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5b6698b0e4a37053de35cc24ee695b98a7eb712b', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://lists.open-mesh.org/pipermail/b.a.t.m.a.n/2014-November/012561.html', 'name': '[b.a.t.m.a.n] 20141118 kernel BUG at net/core/skbuff.c:100', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2014/12/31/7', 'name': '[oss-security] 20141231 Re: CVE Request: Linux: Remote crash via batman-adv module - Linux kernel', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/5b6698b0e4a37053de35cc24ee695b98a7eb712b', 'name': 'https://github.com/torvalds/linux/commit/5b6698b0e4a37053de35cc24ee695b98a7eb712b', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.spinics.net/lists/netdev/msg309425.html', 'name': '[netdev] 20141220 Stable fixes for batman-adv', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2518-1', 'name': 'USN-2518-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2515-1', 'name': 'USN-2515-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2516-1', 'name': 'USN-2516-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2517-1', 'name': 'USN-2517-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html', 'name': 'FEDORA-2015-0517', 'refsource': 'FEDORA', 'tags': []}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html', 'name': 'FEDORA-2015-0515', 'refsource': 'FEDORA', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-399'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The batadv_frag_merge_packets function in net/batman-adv/fragmentation.c in the B.A.T.M.A.N. implementation in the Linux kernel through 3.18.1 uses an incorrect length field during a calculation of an amount of memory, which allows remote attackers to cause a denial of service (mesh-node system crash) via fragmented packets.'}] | 2015-04-18T01:59Z | 2015-01-02T21:59Z | Resource Management Errors | Weaknesses in this category are related to improper management of system resources. | https://cwe.mitre.org/data/definitions/399.html | 1 | Sven Eckelmann | 2014-12-20 13:48:55+01:00 | batman-adv: Calculate extra tail size based on queued fragments
The fragmentation code was replaced in 610bfc6bc99bc83680d190ebc69359a05fc7f605
("batman-adv: Receive fragmented packets and merge"). The new code provided a
mostly unused parameter skb for the merging function. It is used inside the
function to calculate the additionally needed skb tailroom. But instead of
increasing its own tailroom, it is only increasing the tailroom of the first
queued skb. This is not correct in some situations because the first queued
entry can be a different one than the parameter.
An observed problem was:
1. packet with size 104, total_size 1464, fragno 1 was received
- packet is queued
2. packet with size 1400, total_size 1464, fragno 0 was received
- packet is queued at the end of the list
3. enough data was received and can be given to the merge function
(1464 == (1400 - 20) + (104 - 20))
- merge functions gets 1400 byte large packet as skb argument
4. merge function gets first entry in queue (104 byte)
- stored as skb_out
5. merge function calculates the required extra tail as total_size - skb->len
- pskb_expand_head tail of skb_out with 64 bytes
6. merge function tries to squeeze the extra 1380 bytes from the second queued
skb (1400 byte aka skb parameter) in the 64 extra tail bytes of skb_out
Instead calculate the extra required tail bytes for skb_out also using skb_out
instead of using the parameter skb. The skb parameter is only used to get the
total_size from the last received packet. This is also the total_size used to
decide that all fragments were received.
Reported-by: Philipp Psurek <[email protected]>
Signed-off-by: Sven Eckelmann <[email protected]>
Acked-by: Martin Hundebøll <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 5b6698b0e4a37053de35cc24ee695b98a7eb712b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | batadv_frag_merge_packets | batadv_frag_merge_packets( struct hlist_head * chain , struct sk_buff * skb) | ['chain', 'skb'] | batadv_frag_merge_packets(struct hlist_head *chain, struct sk_buff *skb)
{
struct batadv_frag_packet *packet;
struct batadv_frag_list_entry *entry;
struct sk_buff *skb_out = NULL;
int size, hdr_size = sizeof(struct batadv_frag_packet);
/* Make sure incoming skb has non-bogus data. */
packet = (struct batadv_frag_packet *)skb->data;
size = ntohs(packet->total_size);
if (size > batadv_frag_size_limit())
goto free;
/* Remove first entry, as this is the destination for the rest of the
* fragments.
*/
entry = hlist_entry(chain->first, struct batadv_frag_list_entry, list);
hlist_del(&entry->list);
skb_out = entry->skb;
kfree(entry);
/* Make room for the rest of the fragments. */
if (pskb_expand_head(skb_out, 0, size - skb->len, GFP_ATOMIC) < 0) {
kfree_skb(skb_out);
skb_out = NULL;
goto free;
}
/* Move the existing MAC header to just before the payload. (Override
* the fragment header.)
*/
skb_pull_rcsum(skb_out, hdr_size);
memmove(skb_out->data - ETH_HLEN, skb_mac_header(skb_out), ETH_HLEN);
skb_set_mac_header(skb_out, -ETH_HLEN);
skb_reset_network_header(skb_out);
skb_reset_transport_header(skb_out);
/* Copy the payload of the each fragment into the last skb */
hlist_for_each_entry(entry, chain, list) {
size = entry->skb->len - hdr_size;
memcpy(skb_put(skb_out, size), entry->skb->data + hdr_size,
size);
}
free:
/* Locking is not needed, because 'chain' is not part of any orig. */
batadv_frag_clear_chain(chain);
return skb_out;
} | 230 | True | 1 |
||
CVE-2014-9529 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | False | [{'url': 'https://github.com/torvalds/linux/commit/a3a8784454692dd72e5d5d34dcdab17b4420e74c', 'name': 'https://github.com/torvalds/linux/commit/a3a8784454692dd72e5d5d34dcdab17b4420e74c', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/01/06/10', 'name': '[oss-security] 20150106 CVE-2014-9529 - Linux kernel security/keys/gc.c race condition', 'refsource': 'MLIST', 'tags': ['Mailing List', 'Patch', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1179813', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1179813', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a3a8784454692dd72e5d5d34dcdab17b4420e74c', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a3a8784454692dd72e5d5d34dcdab17b4420e74c', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2512-1', 'name': 'USN-2512-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2511-1', 'name': 'USN-2511-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2518-1', 'name': 'USN-2518-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2515-1', 'name': 'USN-2515-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2516-1', 'name': 'USN-2516-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2517-1', 'name': 'USN-2517-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3128', 'name': 'DSA-3128', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2514-1', 'name': 'USN-2514-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2513-1', 'name': 'USN-2513-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147864.html', 'name': 'FEDORA-2015-0517', 'refsource': 'FEDORA', 'tags': ['Third Party Advisory']}, {'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147973.html', 'name': 'FEDORA-2015-0515', 'refsource': 'FEDORA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/71880', 'name': '71880', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html', 'name': 'openSUSE-SU-2015:0714', 'refsource': 'SUSE', 'tags': ['Mailing List', 'Third Party Advisory']}, {'url': 'http://www.securitytracker.com/id/1036763', 'name': '1036763', 'refsource': 'SECTRACK', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/99641', 'name': 'linux-kernel-cve20149529-dos(99641)', 'refsource': 'XF', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-1138.html', 'name': 'RHSA-2015:1138', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-1137.html', 'name': 'RHSA-2015:1137', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-362'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.2', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_aus:6.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:6.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_tus:6.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Race condition in the key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 3.18.2 allows local users to cause a denial of service (memory corruption or panic) or possibly have unspecified other impact via keyctl commands that trigger access to a key structure member during garbage collection of a key.'}] | 2020-05-21T17:41Z | 2015-01-09T21:59Z | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. |
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
A race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.
A race condition violates these properties, which are closely related:
Exclusivity - the code sequence is given exclusive access to the shared resource, i.e., no other code sequence can modify properties of the shared resource before the original sequence has completed execution.
Atomicity - the code sequence is behaviorally atomic, i.e., no other thread or process can concurrently execute the same sequence of instructions (or a subset) against the same resource.
A race condition exists when an "interfering code sequence" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single "x++" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).
The interfering code sequence could be "trusted" or "untrusted." A trusted interfering code sequence occurs within the program; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable program.
| https://cwe.mitre.org/data/definitions/362.html | 0 | Sasha Levin | 2014-12-29 09:39:01-05:00 | KEYS: close race between key lookup and freeing
When a key is being garbage collected, it's key->user would get put before
the ->destroy() callback is called, where the key is removed from it's
respective tracking structures.
This leaves a key hanging in a semi-invalid state which leaves a window open
for a different task to try an access key->user. An example is
find_keyring_by_name() which would dereference key->user for a key that is
in the process of being garbage collected (where key->user was freed but
->destroy() wasn't called yet - so it's still present in the linked list).
This would cause either a panic, or corrupt memory.
Fixes CVE-2014-9529.
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: David Howells <[email protected]> | a3a8784454692dd72e5d5d34dcdab17b4420e74c | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | key_gc_unused_keys | key_gc_unused_keys( struct list_head * keys) | ['keys'] | static noinline void key_gc_unused_keys(struct list_head *keys)
{
while (!list_empty(keys)) {
struct key *key =
list_entry(keys->next, struct key, graveyard_link);
list_del(&key->graveyard_link);
kdebug("- %u", key->serial);
key_check(key);
security_key_free(key);
/* deal with the user's key tracking and quota */
if (test_bit(KEY_FLAG_IN_QUOTA, &key->flags)) {
spin_lock(&key->user->lock);
key->user->qnkeys--;
key->user->qnbytes -= key->quotalen;
spin_unlock(&key->user->lock);
}
atomic_dec(&key->user->nkeys);
if (test_bit(KEY_FLAG_INSTANTIATED, &key->flags))
atomic_dec(&key->user->nikeys);
key_user_put(key->user);
/* now throw away the key memory */
if (key->type->destroy)
key->type->destroy(key);
kfree(key->description);
#ifdef KEY_DEBUGGING
key->magic = KEY_DEBUG_MAGIC_X;
#endif
kmem_cache_free(key_jar, key);
}
} | 190 | True | 1 |
|
CVE-2015-1573 | False | False | False | False | AV:L/AC:L/Au:N/C:N/I:N/A:C | LOCAL | LOW | NONE | NONE | NONE | COMPLETE | 4.9 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | LOCAL | LOW | LOW | NONE | UNCHANGED | NONE | NONE | HIGH | 5.5 | MEDIUM | 1.8 | 3.6 | nan | [{'url': 'https://github.com/torvalds/linux/commit/a2f18db0c68fec96631c10cad9384c196e9008ac', 'name': 'https://github.com/torvalds/linux/commit/a2f18db0c68fec96631c10cad9384c196e9008ac', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a2f18db0c68fec96631c10cad9384c196e9008ac', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a2f18db0c68fec96631c10cad9384c196e9008ac', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/02/10/13', 'name': '[oss-security] 20150210 Re: CVE-Request -- Linux kernel - panic on nftables rule flush', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1190966', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1190966', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/72552', 'name': '72552', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-1138.html', 'name': 'RHSA-2015:1138', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-1137.html', 'name': 'RHSA-2015:1137', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-19'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.4', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The nft_flush_table function in net/netfilter/nf_tables_api.c in the Linux kernel before 3.18.5 mishandles the interaction between cross-chain jumps and ruleset flushes, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability.'}] | 2018-01-05T02:30Z | 2016-05-02T10:59Z | Data Processing Errors | Weaknesses in this category are typically found in functionality that processes data. Data processing is the manipulation of input to retrieve or save information. | https://cwe.mitre.org/data/definitions/19.html | 1 | Pablo Neira Ayuso | 2015-01-04 15:14:22+01:00 | netfilter: nf_tables: fix flush ruleset chain dependencies
Jumping between chains doesn't mix well with flush ruleset. Rules
from a different chain and set elements may still refer to us.
[ 353.373791] ------------[ cut here ]------------
[ 353.373845] kernel BUG at net/netfilter/nf_tables_api.c:1159!
[ 353.373896] invalid opcode: 0000 [#1] SMP
[ 353.373942] Modules linked in: intel_powerclamp uas iwldvm iwlwifi
[ 353.374017] CPU: 0 PID: 6445 Comm: 31c3.nft Not tainted 3.18.0 #98
[ 353.374069] Hardware name: LENOVO 5129CTO/5129CTO, BIOS 6QET47WW (1.17 ) 07/14/2010
[...]
[ 353.375018] Call Trace:
[ 353.375046] [<ffffffff81964c31>] ? nf_tables_commit+0x381/0x540
[ 353.375101] [<ffffffff81949118>] nfnetlink_rcv+0x3d8/0x4b0
[ 353.375150] [<ffffffff81943fc5>] netlink_unicast+0x105/0x1a0
[ 353.375200] [<ffffffff8194438e>] netlink_sendmsg+0x32e/0x790
[ 353.375253] [<ffffffff818f398e>] sock_sendmsg+0x8e/0xc0
[ 353.375300] [<ffffffff818f36b9>] ? move_addr_to_kernel.part.20+0x19/0x70
[ 353.375357] [<ffffffff818f44f9>] ? move_addr_to_kernel+0x19/0x30
[ 353.375410] [<ffffffff819016d2>] ? verify_iovec+0x42/0xd0
[ 353.375459] [<ffffffff818f3e10>] ___sys_sendmsg+0x3f0/0x400
[ 353.375510] [<ffffffff810615fa>] ? native_sched_clock+0x2a/0x90
[ 353.375563] [<ffffffff81176697>] ? acct_account_cputime+0x17/0x20
[ 353.375616] [<ffffffff8110dc78>] ? account_user_time+0x88/0xa0
[ 353.375667] [<ffffffff818f4bbd>] __sys_sendmsg+0x3d/0x80
[ 353.375719] [<ffffffff81b184f4>] ? int_check_syscall_exit_work+0x34/0x3d
[ 353.375776] [<ffffffff818f4c0d>] SyS_sendmsg+0xd/0x20
[ 353.375823] [<ffffffff81b1826d>] system_call_fastpath+0x16/0x1b
Release objects in this order: rules -> sets -> chains -> tables, to
make sure no references to chains are held anymore.
Reported-by: Asbjoern Sloth Toennesen <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]> | a2f18db0c68fec96631c10cad9384c196e9008ac | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | nft_flush_table | nft_flush_table( struct nft_ctx * ctx) | ['ctx'] | static int nft_flush_table(struct nft_ctx *ctx)
{
int err;
struct nft_chain *chain, *nc;
struct nft_set *set, *ns;
list_for_each_entry_safe(chain, nc, &ctx->table->chains, list) {
ctx->chain = chain;
err = nft_delrule_by_chain(ctx);
if (err < 0)
goto out;
err = nft_delchain(ctx);
if (err < 0)
goto out;
}
list_for_each_entry_safe(set, ns, &ctx->table->sets, list) {
if (set->flags & NFT_SET_ANONYMOUS &&
!list_empty(&set->bindings))
continue;
err = nft_delset(ctx, set);
if (err < 0)
goto out;
}
err = nft_deltable(ctx);
out:
return err;
} | 149 | True | 1 |
||
CVE-2015-0239 | False | False | False | False | AV:L/AC:M/Au:N/C:P/I:P/A:P | LOCAL | MEDIUM | NONE | PARTIAL | PARTIAL | PARTIAL | 4.4 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | False | [{'url': 'http://permalink.gmane.org/gmane.linux.kernel.commits.head/502245', 'name': '[bk-commits-head] 20150123 KVM: x86: SYSENTER emulation is broken', 'refsource': 'MLIST', 'tags': ['Broken Link']}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f3747379accba8e95d70cec0eae0582c8c182050', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f3747379accba8e95d70cec0eae0582c8c182050', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/f3747379accba8e95d70cec0eae0582c8c182050', 'name': 'https://github.com/torvalds/linux/commit/f3747379accba8e95d70cec0eae0582c8c182050', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Third Party Advisory']}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5', 'refsource': 'CONFIRM', 'tags': ['Release Notes', 'Vendor Advisory']}, {'url': 'http://www.openwall.com/lists/oss-security/2015/01/27/6', 'name': '[oss-security] 20150127 KVM SYSENTER emulation vulnerability - CVE-2015-0239', 'refsource': 'MLIST', 'tags': ['Exploit', 'Mailing List', 'Third Party Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1186448', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1186448', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2518-1', 'name': 'USN-2518-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2515-1', 'name': 'USN-2515-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2516-1', 'name': 'USN-2516-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2517-1', 'name': 'USN-2517-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/72842', 'name': '72842', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}, {'url': 'http://www.ubuntu.com/usn/USN-2514-1', 'name': 'USN-2514-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2513-1', 'name': 'USN-2513-1', 'refsource': 'UBUNTU', 'tags': ['Third Party Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3170', 'name': 'DSA-3170', 'refsource': 'DEBIAN', 'tags': ['Third Party Advisory']}, {'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2015:058', 'name': 'MDVSA-2015:058', 'refsource': 'MANDRIVA', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'name': 'http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-1272.html', 'name': 'RHSA-2015:1272', 'refsource': 'REDHAT', 'tags': ['Third Party Advisory']}] | [{'description': [{'lang': 'en', 'value': 'CWE-269'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndExcluding': '3.18.5', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:5:-:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*', 'cpe_name': []}, {'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction.'}] | 2020-05-21T14:19Z | 2015-03-02T11:59Z | Improper Privilege Management | The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. | https://cwe.mitre.org/data/definitions/269.html | 0 | Nadav Amit | 2015-01-01 23:11:11+02:00 | KVM: x86: SYSENTER emulation is broken
SYSENTER emulation is broken in several ways:
1. It misses the case of 16-bit code segments completely (CVE-2015-0239).
2. MSR_IA32_SYSENTER_CS is checked in 64-bit mode incorrectly (bits 0 and 1 can
still be set without causing #GP).
3. MSR_IA32_SYSENTER_EIP and MSR_IA32_SYSENTER_ESP are not masked in
legacy-mode.
4. There is some unneeded code.
Fix it.
Cc: [email protected]
Signed-off-by: Nadav Amit <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]> | f3747379accba8e95d70cec0eae0582c8c182050 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | em_sysenter | em_sysenter( struct x86_emulate_ctxt * ctxt) | ['ctxt'] | static int em_sysenter(struct x86_emulate_ctxt *ctxt)
{
const struct x86_emulate_ops *ops = ctxt->ops;
struct desc_struct cs, ss;
u64 msr_data;
u16 cs_sel, ss_sel;
u64 efer = 0;
ops->get_msr(ctxt, MSR_EFER, &efer);
/* inject #GP if in real mode */
if (ctxt->mode == X86EMUL_MODE_REAL)
return emulate_gp(ctxt, 0);
/*
* Not recognized on AMD in compat mode (but is recognized in legacy
* mode).
*/
if ((ctxt->mode == X86EMUL_MODE_PROT32) && (efer & EFER_LMA)
&& !vendor_intel(ctxt))
return emulate_ud(ctxt);
/* sysenter/sysexit have not been tested in 64bit mode. */
if (ctxt->mode == X86EMUL_MODE_PROT64)
return X86EMUL_UNHANDLEABLE;
setup_syscalls_segments(ctxt, &cs, &ss);
ops->get_msr(ctxt, MSR_IA32_SYSENTER_CS, &msr_data);
switch (ctxt->mode) {
case X86EMUL_MODE_PROT32:
if ((msr_data & 0xfffc) == 0x0)
return emulate_gp(ctxt, 0);
break;
case X86EMUL_MODE_PROT64:
if (msr_data == 0x0)
return emulate_gp(ctxt, 0);
break;
default:
break;
}
ctxt->eflags &= ~(EFLG_VM | EFLG_IF);
cs_sel = (u16)msr_data;
cs_sel &= ~SELECTOR_RPL_MASK;
ss_sel = cs_sel + 8;
ss_sel &= ~SELECTOR_RPL_MASK;
if (ctxt->mode == X86EMUL_MODE_PROT64 || (efer & EFER_LMA)) {
cs.d = 0;
cs.l = 1;
}
ops->set_segment(ctxt, cs_sel, &cs, 0, VCPU_SREG_CS);
ops->set_segment(ctxt, ss_sel, &ss, 0, VCPU_SREG_SS);
ops->get_msr(ctxt, MSR_IA32_SYSENTER_EIP, &msr_data);
ctxt->_eip = msr_data;
ops->get_msr(ctxt, MSR_IA32_SYSENTER_ESP, &msr_data);
*reg_write(ctxt, VCPU_REGS_RSP) = msr_data;
return X86EMUL_CONTINUE;
} | 316 | True | 1 |
||
CVE-2015-1421 | False | False | False | False | AV:N/AC:L/Au:N/C:C/I:C/A:C | NETWORK | LOW | NONE | COMPLETE | COMPLETE | COMPLETE | 10.0 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=600ddd6825543962fb807884169e57b580dba208', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=600ddd6825543962fb807884169e57b580dba208', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/600ddd6825543962fb807884169e57b580dba208', 'name': 'https://github.com/torvalds/linux/commit/600ddd6825543962fb807884169e57b580dba208', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/01/29/15', 'name': '[oss-security] 20150129 Re: CVE request -- Linux kernel - net: sctp: slab corruption from use after free on INIT collisions', 'refsource': 'MLIST', 'tags': []}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1196581', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1196581', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.8', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.8', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.debian.org/security/2015/dsa-3170', 'name': 'DSA-3170', 'refsource': 'DEBIAN', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2541-1', 'name': 'USN-2541-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2542-1', 'name': 'USN-2542-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0726.html', 'name': 'RHSA-2015:0726', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0751.html', 'name': 'RHSA-2015:0751', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2545-1', 'name': 'USN-2545-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2546-1', 'name': 'USN-2546-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0782.html', 'name': 'RHSA-2015:0782', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1032172', 'name': '1032172', 'refsource': 'SECTRACK', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00001.html', 'name': 'SUSE-SU-2015:0832', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html', 'name': 'SUSE-SU-2015:1478', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2563-1', 'name': 'USN-2563-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2562-1', 'name': 'USN-2562-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/72356', 'name': '72356', 'refsource': 'BID', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-1082.html', 'name': 'RHSA-2015:1082', 'refsource': 'REDHAT', 'tags': []}, {'url': 'http://rhn.redhat.com/errata/RHSA-2015-0864.html', 'name': 'RHSA-2015:0864', 'refsource': 'REDHAT', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'NVD-CWE-Other'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.7', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'Use-after-free vulnerability in the sctp_assoc_update function in net/sctp/associola.c in the Linux kernel before 3.18.8 allows remote attackers to cause a denial of service (slab corruption and panic) or possibly have unspecified other impact by triggering an INIT collision that leads to improper handling of shared-key data.'}] | 2018-01-05T02:29Z | 2015-03-16T10:59Z | Other | NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset. | Insufficient Information | https://nvd.nist.gov/vuln/categories | 0 | Daniel Borkmann | 2015-01-22 18:26:54+01:00 | net: sctp: fix slab corruption from use after free on INIT collisions
When hitting an INIT collision case during the 4WHS with AUTH enabled, as
already described in detail in commit 1be9a950c646 ("net: sctp: inherit
auth_capable on INIT collisions"), it can happen that we occasionally
still remotely trigger the following panic on server side which seems to
have been uncovered after the fix from commit 1be9a950c646 ...
[ 533.876389] BUG: unable to handle kernel paging request at 00000000ffffffff
[ 533.913657] IP: [<ffffffff811ac385>] __kmalloc+0x95/0x230
[ 533.940559] PGD 5030f2067 PUD 0
[ 533.957104] Oops: 0000 [#1] SMP
[ 533.974283] Modules linked in: sctp mlx4_en [...]
[ 534.939704] Call Trace:
[ 534.951833] [<ffffffff81294e30>] ? crypto_init_shash_ops+0x60/0xf0
[ 534.984213] [<ffffffff81294e30>] crypto_init_shash_ops+0x60/0xf0
[ 535.015025] [<ffffffff8128c8ed>] __crypto_alloc_tfm+0x6d/0x170
[ 535.045661] [<ffffffff8128d12c>] crypto_alloc_base+0x4c/0xb0
[ 535.074593] [<ffffffff8160bd42>] ? _raw_spin_lock_bh+0x12/0x50
[ 535.105239] [<ffffffffa0418c11>] sctp_inet_listen+0x161/0x1e0 [sctp]
[ 535.138606] [<ffffffff814e43bd>] SyS_listen+0x9d/0xb0
[ 535.166848] [<ffffffff816149a9>] system_call_fastpath+0x16/0x1b
... or depending on the the application, for example this one:
[ 1370.026490] BUG: unable to handle kernel paging request at 00000000ffffffff
[ 1370.026506] IP: [<ffffffff811ab455>] kmem_cache_alloc+0x75/0x1d0
[ 1370.054568] PGD 633c94067 PUD 0
[ 1370.070446] Oops: 0000 [#1] SMP
[ 1370.085010] Modules linked in: sctp kvm_amd kvm [...]
[ 1370.963431] Call Trace:
[ 1370.974632] [<ffffffff8120f7cf>] ? SyS_epoll_ctl+0x53f/0x960
[ 1371.000863] [<ffffffff8120f7cf>] SyS_epoll_ctl+0x53f/0x960
[ 1371.027154] [<ffffffff812100d3>] ? anon_inode_getfile+0xd3/0x170
[ 1371.054679] [<ffffffff811e3d67>] ? __alloc_fd+0xa7/0x130
[ 1371.080183] [<ffffffff816149a9>] system_call_fastpath+0x16/0x1b
With slab debugging enabled, we can see that the poison has been overwritten:
[ 669.826368] BUG kmalloc-128 (Tainted: G W ): Poison overwritten
[ 669.826385] INFO: 0xffff880228b32e50-0xffff880228b32e50. First byte 0x6a instead of 0x6b
[ 669.826414] INFO: Allocated in sctp_auth_create_key+0x23/0x50 [sctp] age=3 cpu=0 pid=18494
[ 669.826424] __slab_alloc+0x4bf/0x566
[ 669.826433] __kmalloc+0x280/0x310
[ 669.826453] sctp_auth_create_key+0x23/0x50 [sctp]
[ 669.826471] sctp_auth_asoc_create_secret+0xcb/0x1e0 [sctp]
[ 669.826488] sctp_auth_asoc_init_active_key+0x68/0xa0 [sctp]
[ 669.826505] sctp_do_sm+0x29d/0x17c0 [sctp] [...]
[ 669.826629] INFO: Freed in kzfree+0x31/0x40 age=1 cpu=0 pid=18494
[ 669.826635] __slab_free+0x39/0x2a8
[ 669.826643] kfree+0x1d6/0x230
[ 669.826650] kzfree+0x31/0x40
[ 669.826666] sctp_auth_key_put+0x19/0x20 [sctp]
[ 669.826681] sctp_assoc_update+0x1ee/0x2d0 [sctp]
[ 669.826695] sctp_do_sm+0x674/0x17c0 [sctp]
Since this only triggers in some collision-cases with AUTH, the problem at
heart is that sctp_auth_key_put() on asoc->asoc_shared_key is called twice
when having refcnt 1, once directly in sctp_assoc_update() and yet again
from within sctp_auth_asoc_init_active_key() via sctp_assoc_update() on
the already kzfree'd memory, which is also consistent with the observation
of the poison decrease from 0x6b to 0x6a (note: the overwrite is detected
at a later point in time when poison is checked on new allocation).
Reference counting of auth keys revisited:
Shared keys for AUTH chunks are being stored in endpoints and associations
in endpoint_shared_keys list. On endpoint creation, a null key is being
added; on association creation, all endpoint shared keys are being cached
and thus cloned over to the association. struct sctp_shared_key only holds
a pointer to the actual key bytes, that is, struct sctp_auth_bytes which
keeps track of users internally through refcounting. Naturally, on assoc
or enpoint destruction, sctp_shared_key are being destroyed directly and
the reference on sctp_auth_bytes dropped.
User space can add keys to either list via setsockopt(2) through struct
sctp_authkey and by passing that to sctp_auth_set_key() which replaces or
adds a new auth key. There, sctp_auth_create_key() creates a new sctp_auth_bytes
with refcount 1 and in case of replacement drops the reference on the old
sctp_auth_bytes. A key can be set active from user space through setsockopt()
on the id via sctp_auth_set_active_key(), which iterates through either
endpoint_shared_keys and in case of an assoc, invokes (one of various places)
sctp_auth_asoc_init_active_key().
sctp_auth_asoc_init_active_key() computes the actual secret from local's
and peer's random, hmac and shared key parameters and returns a new key
directly as sctp_auth_bytes, that is asoc->asoc_shared_key, plus drops
the reference if there was a previous one. The secret, which where we
eventually double drop the ref comes from sctp_auth_asoc_set_secret() with
intitial refcount of 1, which also stays unchanged eventually in
sctp_assoc_update(). This key is later being used for crypto layer to
set the key for the hash in crypto_hash_setkey() from sctp_auth_calculate_hmac().
To close the loop: asoc->asoc_shared_key is freshly allocated secret
material and independant of the sctp_shared_key management keeping track
of only shared keys in endpoints and assocs. Hence, also commit 4184b2a79a76
("net: sctp: fix memory leak in auth key management") is independant of
this bug here since it concerns a different layer (though same structures
being used eventually). asoc->asoc_shared_key is reference dropped correctly
on assoc destruction in sctp_association_free() and when active keys are
being replaced in sctp_auth_asoc_init_active_key(), it always has a refcount
of 1. Hence, it's freed prematurely in sctp_assoc_update(). Simple fix is
to remove that sctp_auth_key_put() from there which fixes these panics.
Fixes: 730fc3d05cd4 ("[SCTP]: Implete SCTP-AUTH parameter processing")
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: Vlad Yasevich <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | 600ddd6825543962fb807884169e57b580dba208 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | sctp_assoc_update | sctp_assoc_update( struct sctp_association * asoc , struct sctp_association * new) | ['asoc', 'new'] | void sctp_assoc_update(struct sctp_association *asoc,
struct sctp_association *new)
{
struct sctp_transport *trans;
struct list_head *pos, *temp;
/* Copy in new parameters of peer. */
asoc->c = new->c;
asoc->peer.rwnd = new->peer.rwnd;
asoc->peer.sack_needed = new->peer.sack_needed;
asoc->peer.auth_capable = new->peer.auth_capable;
asoc->peer.i = new->peer.i;
sctp_tsnmap_init(&asoc->peer.tsn_map, SCTP_TSN_MAP_INITIAL,
asoc->peer.i.initial_tsn, GFP_ATOMIC);
/* Remove any peer addresses not present in the new association. */
list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) {
trans = list_entry(pos, struct sctp_transport, transports);
if (!sctp_assoc_lookup_paddr(new, &trans->ipaddr)) {
sctp_assoc_rm_peer(asoc, trans);
continue;
}
if (asoc->state >= SCTP_STATE_ESTABLISHED)
sctp_transport_reset(trans);
}
/* If the case is A (association restart), use
* initial_tsn as next_tsn. If the case is B, use
* current next_tsn in case data sent to peer
* has been discarded and needs retransmission.
*/
if (asoc->state >= SCTP_STATE_ESTABLISHED) {
asoc->next_tsn = new->next_tsn;
asoc->ctsn_ack_point = new->ctsn_ack_point;
asoc->adv_peer_ack_point = new->adv_peer_ack_point;
/* Reinitialize SSN for both local streams
* and peer's streams.
*/
sctp_ssnmap_clear(asoc->ssnmap);
/* Flush the ULP reassembly and ordered queue.
* Any data there will now be stale and will
* cause problems.
*/
sctp_ulpq_flush(&asoc->ulpq);
/* reset the overall association error count so
* that the restarted association doesn't get torn
* down on the next retransmission timer.
*/
asoc->overall_error_count = 0;
} else {
/* Add any peer addresses from the new association. */
list_for_each_entry(trans, &new->peer.transport_addr_list,
transports) {
if (!sctp_assoc_lookup_paddr(asoc, &trans->ipaddr))
sctp_assoc_add_peer(asoc, &trans->ipaddr,
GFP_ATOMIC, trans->state);
}
asoc->ctsn_ack_point = asoc->next_tsn - 1;
asoc->adv_peer_ack_point = asoc->ctsn_ack_point;
if (!asoc->ssnmap) {
/* Move the ssnmap. */
asoc->ssnmap = new->ssnmap;
new->ssnmap = NULL;
}
if (!asoc->assoc_id) {
/* get a new association id since we don't have one
* yet.
*/
sctp_assoc_set_id(asoc, GFP_ATOMIC);
}
}
/* SCTP-AUTH: Save the peer parameters from the new associations
* and also move the association shared keys over
*/
kfree(asoc->peer.peer_random);
asoc->peer.peer_random = new->peer.peer_random;
new->peer.peer_random = NULL;
kfree(asoc->peer.peer_chunks);
asoc->peer.peer_chunks = new->peer.peer_chunks;
new->peer.peer_chunks = NULL;
kfree(asoc->peer.peer_hmacs);
asoc->peer.peer_hmacs = new->peer.peer_hmacs;
new->peer.peer_hmacs = NULL;
sctp_auth_key_put(asoc->asoc_shared_key);
sctp_auth_asoc_init_active_key(asoc, GFP_ATOMIC);
} | 429 | True | 1 |
|
CVE-2015-1465 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1183744', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1183744', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=df4d92549f23e1c037e83323aff58a21b3de7fe0', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=df4d92549f23e1c037e83323aff58a21b3de7fe0', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/df4d92549f23e1c037e83323aff58a21b3de7fe0', 'name': 'https://github.com/torvalds/linux/commit/df4d92549f23e1c037e83323aff58a21b3de7fe0', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/02/03/13', 'name': '[oss-security] 20150203 Re: CVE request -- Linux kernel - net: DoS due to routing packets to too many different dsts/too fast', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.8', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.8', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2545-1', 'name': 'USN-2545-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2546-1', 'name': 'USN-2546-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/72435', 'name': '72435', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html', 'name': 'SUSE-SU-2015:1489', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html', 'name': 'SUSE-SU-2015:1488', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2563-1', 'name': 'USN-2563-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2562-1', 'name': 'USN-2562-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1036763', 'name': '1036763', 'refsource': 'SECTRACK', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.7', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv4 implementation in the Linux kernel before 3.18.8 does not properly consider the length of the Read-Copy Update (RCU) grace period for redirecting lookups in the absence of caching, which allows remote attackers to cause a denial of service (memory consumption or system crash) via a flood of packets.'}] | 2017-08-13T01:29Z | 2015-04-05T21:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Hannes Frederic Sowa | 2015-01-23 12:01:26+01:00 | ipv4: try to cache dst_entries which would cause a redirect
Not caching dst_entries which cause redirects could be exploited by hosts
on the same subnet, causing a severe DoS attack. This effect aggravated
since commit f88649721268999 ("ipv4: fix dst race in sk_dst_get()").
Lookups causing redirects will be allocated with DST_NOCACHE set which
will force dst_release to free them via RCU. Unfortunately waiting for
RCU grace period just takes too long, we can end up with >1M dst_entries
waiting to be released and the system will run OOM. rcuos threads cannot
catch up under high softirq load.
Attaching the flag to emit a redirect later on to the specific skb allows
us to cache those dst_entries thus reducing the pressure on allocation
and deallocation.
This issue was discovered by Marcelo Leitner.
Cc: Julian Anastasov <[email protected]>
Signed-off-by: Marcelo Leitner <[email protected]>
Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: Julian Anastasov <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | df4d92549f23e1c037e83323aff58a21b3de7fe0 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | ip_forward | ip_forward( struct sk_buff * skb) | ['skb'] | int ip_forward(struct sk_buff *skb)
{
u32 mtu;
struct iphdr *iph; /* Our header */
struct rtable *rt; /* Route we use */
struct ip_options *opt = &(IPCB(skb)->opt);
/* that should never happen */
if (skb->pkt_type != PACKET_HOST)
goto drop;
if (skb_warn_if_lro(skb))
goto drop;
if (!xfrm4_policy_check(NULL, XFRM_POLICY_FWD, skb))
goto drop;
if (IPCB(skb)->opt.router_alert && ip_call_ra_chain(skb))
return NET_RX_SUCCESS;
skb_forward_csum(skb);
/*
* According to the RFC, we must first decrease the TTL field. If
* that reaches zero, we must reply an ICMP control message telling
* that the packet's lifetime expired.
*/
if (ip_hdr(skb)->ttl <= 1)
goto too_many_hops;
if (!xfrm4_route_forward(skb))
goto drop;
rt = skb_rtable(skb);
if (opt->is_strictroute && rt->rt_uses_gateway)
goto sr_failed;
IPCB(skb)->flags |= IPSKB_FORWARDED;
mtu = ip_dst_mtu_maybe_forward(&rt->dst, true);
if (!ip_may_fragment(skb) && ip_exceeds_mtu(skb, mtu)) {
IP_INC_STATS(dev_net(rt->dst.dev), IPSTATS_MIB_FRAGFAILS);
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
htonl(mtu));
goto drop;
}
/* We are about to mangle packet. Copy it! */
if (skb_cow(skb, LL_RESERVED_SPACE(rt->dst.dev)+rt->dst.header_len))
goto drop;
iph = ip_hdr(skb);
/* Decrease ttl after skb cow done */
ip_decrease_ttl(iph);
/*
* We now generate an ICMP HOST REDIRECT giving the route
* we calculated.
*/
if (rt->rt_flags&RTCF_DOREDIRECT && !opt->srr && !skb_sec_path(skb))
ip_rt_send_redirect(skb);
skb->priority = rt_tos2priority(iph->tos);
return NF_HOOK(NFPROTO_IPV4, NF_INET_FORWARD, skb, skb->dev,
rt->dst.dev, ip_forward_finish);
sr_failed:
/*
* Strict routing permits no gatewaying
*/
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_SR_FAILED, 0);
goto drop;
too_many_hops:
/* Tell the sender its packet died... */
IP_INC_STATS_BH(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_INHDRERRORS);
icmp_send(skb, ICMP_TIME_EXCEEDED, ICMP_EXC_TTL, 0);
drop:
kfree_skb(skb);
return NET_RX_DROP;
} | 359 | True | 1 |
||
CVE-2015-1465 | False | False | False | False | AV:N/AC:L/Au:N/C:N/I:N/A:C | NETWORK | LOW | NONE | NONE | NONE | COMPLETE | 7.8 | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | nan | [{'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1183744', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1183744', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=df4d92549f23e1c037e83323aff58a21b3de7fe0', 'name': 'http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=df4d92549f23e1c037e83323aff58a21b3de7fe0', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'https://github.com/torvalds/linux/commit/df4d92549f23e1c037e83323aff58a21b3de7fe0', 'name': 'https://github.com/torvalds/linux/commit/df4d92549f23e1c037e83323aff58a21b3de7fe0', 'refsource': 'CONFIRM', 'tags': []}, {'url': 'http://www.openwall.com/lists/oss-security/2015/02/03/13', 'name': '[oss-security] 20150203 Re: CVE request -- Linux kernel - net: DoS due to routing packets to too many different dsts/too fast', 'refsource': 'MLIST', 'tags': []}, {'url': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.8', 'name': 'http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.8', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'http://www.ubuntu.com/usn/USN-2545-1', 'name': 'USN-2545-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2546-1', 'name': 'USN-2546-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securityfocus.com/bid/72435', 'name': '72435', 'refsource': 'BID', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html', 'name': 'SUSE-SU-2015:1489', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html', 'name': 'SUSE-SU-2015:1488', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html', 'name': 'openSUSE-SU-2015:1382', 'refsource': 'SUSE', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2563-1', 'name': 'USN-2563-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.ubuntu.com/usn/USN-2562-1', 'name': 'USN-2562-1', 'refsource': 'UBUNTU', 'tags': []}, {'url': 'http://www.securitytracker.com/id/1036763', 'name': '1036763', 'refsource': 'SECTRACK', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-17'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.7', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'The IPv4 implementation in the Linux kernel before 3.18.8 does not properly consider the length of the Read-Copy Update (RCU) grace period for redirecting lookups in the absence of caching, which allows remote attackers to cause a denial of service (memory consumption or system crash) via a flood of packets.'}] | 2017-08-13T01:29Z | 2015-04-05T21:59Z | DEPRECATED: Code | This entry has been deprecated. It was originally used for organizing the Development View (CWE-699) and some other views, but it introduced unnecessary complexity and depth to the resulting tree. | https://cwe.mitre.org/data/definitions/17.html | 1 | Hannes Frederic Sowa | 2015-01-23 12:01:26+01:00 | ipv4: try to cache dst_entries which would cause a redirect
Not caching dst_entries which cause redirects could be exploited by hosts
on the same subnet, causing a severe DoS attack. This effect aggravated
since commit f88649721268999 ("ipv4: fix dst race in sk_dst_get()").
Lookups causing redirects will be allocated with DST_NOCACHE set which
will force dst_release to free them via RCU. Unfortunately waiting for
RCU grace period just takes too long, we can end up with >1M dst_entries
waiting to be released and the system will run OOM. rcuos threads cannot
catch up under high softirq load.
Attaching the flag to emit a redirect later on to the specific skb allows
us to cache those dst_entries thus reducing the pressure on allocation
and deallocation.
This issue was discovered by Marcelo Leitner.
Cc: Julian Anastasov <[email protected]>
Signed-off-by: Marcelo Leitner <[email protected]>
Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Hannes Frederic Sowa <[email protected]>
Signed-off-by: Julian Anastasov <[email protected]>
Signed-off-by: David S. Miller <[email protected]> | df4d92549f23e1c037e83323aff58a21b3de7fe0 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | __mkroute_input | __mkroute_input( struct sk_buff * skb , const struct fib_result * res , struct in_device * in_dev , __be32 daddr , __be32 saddr , u32 tos) | ['skb', 'res', 'in_dev', 'daddr', 'saddr', 'tos'] | static int __mkroute_input(struct sk_buff *skb,
const struct fib_result *res,
struct in_device *in_dev,
__be32 daddr, __be32 saddr, u32 tos)
{
struct fib_nh_exception *fnhe;
struct rtable *rth;
int err;
struct in_device *out_dev;
unsigned int flags = 0;
bool do_cache;
u32 itag = 0;
/* get a working reference to the output device */
out_dev = __in_dev_get_rcu(FIB_RES_DEV(*res));
if (out_dev == NULL) {
net_crit_ratelimited("Bug in ip_route_input_slow(). Please report.\n");
return -EINVAL;
}
err = fib_validate_source(skb, saddr, daddr, tos, FIB_RES_OIF(*res),
in_dev->dev, in_dev, &itag);
if (err < 0) {
ip_handle_martian_source(in_dev->dev, in_dev, skb, daddr,
saddr);
goto cleanup;
}
do_cache = res->fi && !itag;
if (out_dev == in_dev && err && IN_DEV_TX_REDIRECTS(out_dev) &&
(IN_DEV_SHARED_MEDIA(out_dev) ||
inet_addr_onlink(out_dev, saddr, FIB_RES_GW(*res)))) {
flags |= RTCF_DOREDIRECT;
do_cache = false;
}
if (skb->protocol != htons(ETH_P_IP)) {
/* Not IP (i.e. ARP). Do not create route, if it is
* invalid for proxy arp. DNAT routes are always valid.
*
* Proxy arp feature have been extended to allow, ARP
* replies back to the same interface, to support
* Private VLAN switch technologies. See arp.c.
*/
if (out_dev == in_dev &&
IN_DEV_PROXY_ARP_PVLAN(in_dev) == 0) {
err = -EINVAL;
goto cleanup;
}
}
fnhe = find_exception(&FIB_RES_NH(*res), daddr);
if (do_cache) {
if (fnhe != NULL)
rth = rcu_dereference(fnhe->fnhe_rth_input);
else
rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input);
if (rt_cache_valid(rth)) {
skb_dst_set_noref(skb, &rth->dst);
goto out;
}
}
rth = rt_dst_alloc(out_dev->dev,
IN_DEV_CONF_GET(in_dev, NOPOLICY),
IN_DEV_CONF_GET(out_dev, NOXFRM), do_cache);
if (!rth) {
err = -ENOBUFS;
goto cleanup;
}
rth->rt_genid = rt_genid_ipv4(dev_net(rth->dst.dev));
rth->rt_flags = flags;
rth->rt_type = res->type;
rth->rt_is_input = 1;
rth->rt_iif = 0;
rth->rt_pmtu = 0;
rth->rt_gateway = 0;
rth->rt_uses_gateway = 0;
INIT_LIST_HEAD(&rth->rt_uncached);
RT_CACHE_STAT_INC(in_slow_tot);
rth->dst.input = ip_forward;
rth->dst.output = ip_output;
rt_set_nexthop(rth, daddr, res, fnhe, res->fi, res->type, itag);
skb_dst_set(skb, &rth->dst);
out:
err = 0;
cleanup:
return err;
} | 473 | True | 1 |
||
CVE-2015-9004 | False | False | False | True | AV:N/AC:M/Au:N/C:C/I:C/A:C | NETWORK | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 9.3 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://source.android.com/security/bulletin/2017-05-01', 'name': 'https://source.android.com/security/bulletin/2017-05-01', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/c3c87e770458aa004bd7ed3f29945ff436fd6511', 'name': 'https://github.com/torvalds/linux/commit/c3c87e770458aa004bd7ed3f29945ff436fd6511', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c3c87e770458aa004bd7ed3f29945ff436fd6511', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c3c87e770458aa004bd7ed3f29945ff436fd6511', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/98166', 'name': '98166', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.52', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:*:*:*:*:*:*:*:*', 'versionEndIncluding': '7.1.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the Linux kernel before 3.19 mishandles counter grouping, which allows local users to gain privileges via a crafted application, related to the perf_pmu_register and perf_event_open functions.'}] | 2017-05-12T14:54Z | 2017-05-02T21:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 11:19:48+01:00 | perf: Tighten (and fix) the grouping condition
The fix from 9fc81d87420d ("perf: Fix events installation during
moving group") was incomplete in that it failed to recognise that
creating a group with events for different CPUs is semantically
broken -- they cannot be co-scheduled.
Furthermore, it leads to real breakage where, when we create an event
for CPU Y and then migrate it to form a group on CPU X, the code gets
confused where the counter is programmed -- triggered in practice
as well by me via the perf fuzzer.
Fix this by tightening the rules for creating groups. Only allow
grouping of counters that can be co-scheduled in the same context.
This means for the same task and/or the same cpu.
Fixes: 9fc81d87420d ("perf: Fix events installation during moving group")
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | c3c87e770458aa004bd7ed3f29945ff436fd6511 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | SYSCALL_DEFINE5 | SYSCALL_DEFINE5( perf_event_open , struct perf_event_attr __user * , attr_uptr , pid_t , pid , int , cpu , int , group_fd , unsigned long , flags) | ['perf_event_open', 'attr_uptr', 'pid_t', 'pid', 'int', 'cpu', 'int', 'group_fd', 'long', 'flags'] | SYSCALL_DEFINE5(perf_event_open,
struct perf_event_attr __user *, attr_uptr,
pid_t, pid, int, cpu, int, group_fd, unsigned long, flags)
{
struct perf_event *group_leader = NULL, *output_event = NULL;
struct perf_event *event, *sibling;
struct perf_event_attr attr;
struct perf_event_context *ctx;
struct file *event_file = NULL;
struct fd group = {NULL, 0};
struct task_struct *task = NULL;
struct pmu *pmu;
int event_fd;
int move_group = 0;
int err;
int f_flags = O_RDWR;
/* for future expandability... */
if (flags & ~PERF_FLAG_ALL)
return -EINVAL;
err = perf_copy_attr(attr_uptr, &attr);
if (err)
return err;
if (!attr.exclude_kernel) {
if (perf_paranoid_kernel() && !capable(CAP_SYS_ADMIN))
return -EACCES;
}
if (attr.freq) {
if (attr.sample_freq > sysctl_perf_event_sample_rate)
return -EINVAL;
} else {
if (attr.sample_period & (1ULL << 63))
return -EINVAL;
}
/*
* In cgroup mode, the pid argument is used to pass the fd
* opened to the cgroup directory in cgroupfs. The cpu argument
* designates the cpu on which to monitor threads from that
* cgroup.
*/
if ((flags & PERF_FLAG_PID_CGROUP) && (pid == -1 || cpu == -1))
return -EINVAL;
if (flags & PERF_FLAG_FD_CLOEXEC)
f_flags |= O_CLOEXEC;
event_fd = get_unused_fd_flags(f_flags);
if (event_fd < 0)
return event_fd;
if (group_fd != -1) {
err = perf_fget_light(group_fd, &group);
if (err)
goto err_fd;
group_leader = group.file->private_data;
if (flags & PERF_FLAG_FD_OUTPUT)
output_event = group_leader;
if (flags & PERF_FLAG_FD_NO_GROUP)
group_leader = NULL;
}
if (pid != -1 && !(flags & PERF_FLAG_PID_CGROUP)) {
task = find_lively_task_by_vpid(pid);
if (IS_ERR(task)) {
err = PTR_ERR(task);
goto err_group_fd;
}
}
if (task && group_leader &&
group_leader->attr.inherit != attr.inherit) {
err = -EINVAL;
goto err_task;
}
get_online_cpus();
event = perf_event_alloc(&attr, cpu, task, group_leader, NULL,
NULL, NULL);
if (IS_ERR(event)) {
err = PTR_ERR(event);
goto err_cpus;
}
if (flags & PERF_FLAG_PID_CGROUP) {
err = perf_cgroup_connect(pid, event, &attr, group_leader);
if (err) {
__free_event(event);
goto err_cpus;
}
}
if (is_sampling_event(event)) {
if (event->pmu->capabilities & PERF_PMU_CAP_NO_INTERRUPT) {
err = -ENOTSUPP;
goto err_alloc;
}
}
account_event(event);
/*
* Special case software events and allow them to be part of
* any hardware group.
*/
pmu = event->pmu;
if (group_leader &&
(is_software_event(event) != is_software_event(group_leader))) {
if (is_software_event(event)) {
/*
* If event and group_leader are not both a software
* event, and event is, then group leader is not.
*
* Allow the addition of software events to !software
* groups, this is safe because software events never
* fail to schedule.
*/
pmu = group_leader->pmu;
} else if (is_software_event(group_leader) &&
(group_leader->group_flags & PERF_GROUP_SOFTWARE)) {
/*
* In case the group is a pure software group, and we
* try to add a hardware event, move the whole group to
* the hardware context.
*/
move_group = 1;
}
}
/*
* Get the target context (task or percpu):
*/
ctx = find_get_context(pmu, task, event->cpu);
if (IS_ERR(ctx)) {
err = PTR_ERR(ctx);
goto err_alloc;
}
if (task) {
put_task_struct(task);
task = NULL;
}
/*
* Look up the group leader (we will attach this event to it):
*/
if (group_leader) {
err = -EINVAL;
/*
* Do not allow a recursive hierarchy (this new sibling
* becoming part of another group-sibling):
*/
if (group_leader->group_leader != group_leader)
goto err_context;
/*
* Do not allow to attach to a group in a different
* task or CPU context:
*/
if (move_group) {
if (group_leader->ctx->type != ctx->type)
goto err_context;
} else {
if (group_leader->ctx != ctx)
goto err_context;
}
/*
* Only a group leader can be exclusive or pinned
*/
if (attr.exclusive || attr.pinned)
goto err_context;
}
if (output_event) {
err = perf_event_set_output(event, output_event);
if (err)
goto err_context;
}
event_file = anon_inode_getfile("[perf_event]", &perf_fops, event,
f_flags);
if (IS_ERR(event_file)) {
err = PTR_ERR(event_file);
goto err_context;
}
if (move_group) {
struct perf_event_context *gctx = group_leader->ctx;
mutex_lock(&gctx->mutex);
perf_remove_from_context(group_leader, false);
/*
* Removing from the context ends up with disabled
* event. What we want here is event in the initial
* startup state, ready to be add into new context.
*/
perf_event__state_init(group_leader);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
perf_remove_from_context(sibling, false);
perf_event__state_init(sibling);
put_ctx(gctx);
}
mutex_unlock(&gctx->mutex);
put_ctx(gctx);
}
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
if (move_group) {
synchronize_rcu();
perf_install_in_context(ctx, group_leader, group_leader->cpu);
get_ctx(ctx);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
perf_install_in_context(ctx, sibling, sibling->cpu);
get_ctx(ctx);
}
}
perf_install_in_context(ctx, event, event->cpu);
perf_unpin_context(ctx);
mutex_unlock(&ctx->mutex);
put_online_cpus();
event->owner = current;
mutex_lock(¤t->perf_event_mutex);
list_add_tail(&event->owner_entry, ¤t->perf_event_list);
mutex_unlock(¤t->perf_event_mutex);
/*
* Precalculate sample_data sizes
*/
perf_event__header_size(event);
perf_event__id_header_size(event);
/*
* Drop the reference on the group_event after placing the
* new event on the sibling_list. This ensures destruction
* of the group leader will find the pointer to itself in
* perf_group_detach().
*/
fdput(group);
fd_install(event_fd, event_file);
return event_fd;
err_context:
perf_unpin_context(ctx);
put_ctx(ctx);
err_alloc:
free_event(event);
err_cpus:
put_online_cpus();
err_task:
if (task)
put_task_struct(task);
err_group_fd:
fdput(group);
err_fd:
put_unused_fd(event_fd);
return err;
} | 1003 | True | 1 |
||
CVE-2015-9004 | False | False | False | True | AV:N/AC:M/Au:N/C:C/I:C/A:C | NETWORK | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 9.3 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | LOCAL | LOW | NONE | REQUIRED | UNCHANGED | HIGH | HIGH | HIGH | 7.8 | HIGH | 1.8 | 5.9 | nan | [{'url': 'https://source.android.com/security/bulletin/2017-05-01', 'name': 'https://source.android.com/security/bulletin/2017-05-01', 'refsource': 'CONFIRM', 'tags': ['Vendor Advisory']}, {'url': 'https://github.com/torvalds/linux/commit/c3c87e770458aa004bd7ed3f29945ff436fd6511', 'name': 'https://github.com/torvalds/linux/commit/c3c87e770458aa004bd7ed3f29945ff436fd6511', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c3c87e770458aa004bd7ed3f29945ff436fd6511', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c3c87e770458aa004bd7ed3f29945ff436fd6511', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking', 'Patch', 'Third Party Advisory']}, {'url': 'http://www.securityfocus.com/bid/98166', 'name': '98166', 'refsource': 'BID', 'tags': ['Third Party Advisory', 'VDB Entry']}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | HIGH | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.18.52', 'cpe_name': []}]}, {'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:google:android:*:*:*:*:*:*:*:*', 'versionEndIncluding': '7.1.1', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the Linux kernel before 3.19 mishandles counter grouping, which allows local users to gain privileges via a crafted application, related to the perf_pmu_register and perf_event_open functions.'}] | 2017-05-12T14:54Z | 2017-05-02T21:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 11:19:48+01:00 | perf: Tighten (and fix) the grouping condition
The fix from 9fc81d87420d ("perf: Fix events installation during
moving group") was incomplete in that it failed to recognise that
creating a group with events for different CPUs is semantically
broken -- they cannot be co-scheduled.
Furthermore, it leads to real breakage where, when we create an event
for CPU Y and then migrate it to form a group on CPU X, the code gets
confused where the counter is programmed -- triggered in practice
as well by me via the perf fuzzer.
Fix this by tightening the rules for creating groups. Only allow
grouping of counters that can be co-scheduled in the same context.
This means for the same task and/or the same cpu.
Fixes: 9fc81d87420d ("perf: Fix events installation during moving group")
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | c3c87e770458aa004bd7ed3f29945ff436fd6511 | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_pmu_register | perf_pmu_register( struct pmu * pmu , const char * name , int type) | ['pmu', 'name', 'type'] | int perf_pmu_register(struct pmu *pmu, const char *name, int type)
{
int cpu, ret;
mutex_lock(&pmus_lock);
ret = -ENOMEM;
pmu->pmu_disable_count = alloc_percpu(int);
if (!pmu->pmu_disable_count)
goto unlock;
pmu->type = -1;
if (!name)
goto skip_type;
pmu->name = name;
if (type < 0) {
type = idr_alloc(&pmu_idr, pmu, PERF_TYPE_MAX, 0, GFP_KERNEL);
if (type < 0) {
ret = type;
goto free_pdc;
}
}
pmu->type = type;
if (pmu_bus_running) {
ret = pmu_dev_alloc(pmu);
if (ret)
goto free_idr;
}
skip_type:
pmu->pmu_cpu_context = find_pmu_context(pmu->task_ctx_nr);
if (pmu->pmu_cpu_context)
goto got_cpu_context;
ret = -ENOMEM;
pmu->pmu_cpu_context = alloc_percpu(struct perf_cpu_context);
if (!pmu->pmu_cpu_context)
goto free_dev;
for_each_possible_cpu(cpu) {
struct perf_cpu_context *cpuctx;
cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu);
__perf_event_init_context(&cpuctx->ctx);
lockdep_set_class(&cpuctx->ctx.mutex, &cpuctx_mutex);
lockdep_set_class(&cpuctx->ctx.lock, &cpuctx_lock);
cpuctx->ctx.type = cpu_context;
cpuctx->ctx.pmu = pmu;
__perf_cpu_hrtimer_init(cpuctx, cpu);
INIT_LIST_HEAD(&cpuctx->rotation_list);
cpuctx->unique_pmu = pmu;
}
got_cpu_context:
if (!pmu->start_txn) {
if (pmu->pmu_enable) {
/*
* If we have pmu_enable/pmu_disable calls, install
* transaction stubs that use that to try and batch
* hardware accesses.
*/
pmu->start_txn = perf_pmu_start_txn;
pmu->commit_txn = perf_pmu_commit_txn;
pmu->cancel_txn = perf_pmu_cancel_txn;
} else {
pmu->start_txn = perf_pmu_nop_void;
pmu->commit_txn = perf_pmu_nop_int;
pmu->cancel_txn = perf_pmu_nop_void;
}
}
if (!pmu->pmu_enable) {
pmu->pmu_enable = perf_pmu_nop_void;
pmu->pmu_disable = perf_pmu_nop_void;
}
if (!pmu->event_idx)
pmu->event_idx = perf_event_idx_default;
list_add_rcu(&pmu->entry, &pmus);
ret = 0;
unlock:
mutex_unlock(&pmus_lock);
return ret;
free_dev:
device_del(pmu->dev);
put_device(pmu->dev);
free_idr:
if (pmu->type >= PERF_TYPE_MAX)
idr_remove(&pmu_idr, pmu->type);
free_pdc:
free_percpu(pmu->pmu_disable_count);
goto unlock;
} | 444 | True | 1 |
||
CVE-2016-6786 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | SYSCALL_DEFINE5 | SYSCALL_DEFINE5( perf_event_open , struct perf_event_attr __user * , attr_uptr , pid_t , pid , int , cpu , int , group_fd , unsigned long , flags) | ['perf_event_open', 'attr_uptr', 'pid_t', 'pid', 'int', 'cpu', 'int', 'group_fd', 'long', 'flags'] | SYSCALL_DEFINE5(perf_event_open,
struct perf_event_attr __user *, attr_uptr,
pid_t, pid, int, cpu, int, group_fd, unsigned long, flags)
{
struct perf_event *group_leader = NULL, *output_event = NULL;
struct perf_event *event, *sibling;
struct perf_event_attr attr;
struct perf_event_context *ctx;
struct file *event_file = NULL;
struct fd group = {NULL, 0};
struct task_struct *task = NULL;
struct pmu *pmu;
int event_fd;
int move_group = 0;
int err;
int f_flags = O_RDWR;
/* for future expandability... */
if (flags & ~PERF_FLAG_ALL)
return -EINVAL;
err = perf_copy_attr(attr_uptr, &attr);
if (err)
return err;
if (!attr.exclude_kernel) {
if (perf_paranoid_kernel() && !capable(CAP_SYS_ADMIN))
return -EACCES;
}
if (attr.freq) {
if (attr.sample_freq > sysctl_perf_event_sample_rate)
return -EINVAL;
} else {
if (attr.sample_period & (1ULL << 63))
return -EINVAL;
}
/*
* In cgroup mode, the pid argument is used to pass the fd
* opened to the cgroup directory in cgroupfs. The cpu argument
* designates the cpu on which to monitor threads from that
* cgroup.
*/
if ((flags & PERF_FLAG_PID_CGROUP) && (pid == -1 || cpu == -1))
return -EINVAL;
if (flags & PERF_FLAG_FD_CLOEXEC)
f_flags |= O_CLOEXEC;
event_fd = get_unused_fd_flags(f_flags);
if (event_fd < 0)
return event_fd;
if (group_fd != -1) {
err = perf_fget_light(group_fd, &group);
if (err)
goto err_fd;
group_leader = group.file->private_data;
if (flags & PERF_FLAG_FD_OUTPUT)
output_event = group_leader;
if (flags & PERF_FLAG_FD_NO_GROUP)
group_leader = NULL;
}
if (pid != -1 && !(flags & PERF_FLAG_PID_CGROUP)) {
task = find_lively_task_by_vpid(pid);
if (IS_ERR(task)) {
err = PTR_ERR(task);
goto err_group_fd;
}
}
if (task && group_leader &&
group_leader->attr.inherit != attr.inherit) {
err = -EINVAL;
goto err_task;
}
get_online_cpus();
event = perf_event_alloc(&attr, cpu, task, group_leader, NULL,
NULL, NULL);
if (IS_ERR(event)) {
err = PTR_ERR(event);
goto err_cpus;
}
if (flags & PERF_FLAG_PID_CGROUP) {
err = perf_cgroup_connect(pid, event, &attr, group_leader);
if (err) {
__free_event(event);
goto err_cpus;
}
}
if (is_sampling_event(event)) {
if (event->pmu->capabilities & PERF_PMU_CAP_NO_INTERRUPT) {
err = -ENOTSUPP;
goto err_alloc;
}
}
account_event(event);
/*
* Special case software events and allow them to be part of
* any hardware group.
*/
pmu = event->pmu;
if (group_leader &&
(is_software_event(event) != is_software_event(group_leader))) {
if (is_software_event(event)) {
/*
* If event and group_leader are not both a software
* event, and event is, then group leader is not.
*
* Allow the addition of software events to !software
* groups, this is safe because software events never
* fail to schedule.
*/
pmu = group_leader->pmu;
} else if (is_software_event(group_leader) &&
(group_leader->group_flags & PERF_GROUP_SOFTWARE)) {
/*
* In case the group is a pure software group, and we
* try to add a hardware event, move the whole group to
* the hardware context.
*/
move_group = 1;
}
}
/*
* Get the target context (task or percpu):
*/
ctx = find_get_context(pmu, task, event->cpu);
if (IS_ERR(ctx)) {
err = PTR_ERR(ctx);
goto err_alloc;
}
if (task) {
put_task_struct(task);
task = NULL;
}
/*
* Look up the group leader (we will attach this event to it):
*/
if (group_leader) {
err = -EINVAL;
/*
* Do not allow a recursive hierarchy (this new sibling
* becoming part of another group-sibling):
*/
if (group_leader->group_leader != group_leader)
goto err_context;
/*
* Do not allow to attach to a group in a different
* task or CPU context:
*/
if (move_group) {
/*
* Make sure we're both on the same task, or both
* per-cpu events.
*/
if (group_leader->ctx->task != ctx->task)
goto err_context;
/*
* Make sure we're both events for the same CPU;
* grouping events for different CPUs is broken; since
* you can never concurrently schedule them anyhow.
*/
if (group_leader->cpu != event->cpu)
goto err_context;
} else {
if (group_leader->ctx != ctx)
goto err_context;
}
/*
* Only a group leader can be exclusive or pinned
*/
if (attr.exclusive || attr.pinned)
goto err_context;
}
if (output_event) {
err = perf_event_set_output(event, output_event);
if (err)
goto err_context;
}
event_file = anon_inode_getfile("[perf_event]", &perf_fops, event,
f_flags);
if (IS_ERR(event_file)) {
err = PTR_ERR(event_file);
goto err_context;
}
if (move_group) {
struct perf_event_context *gctx = group_leader->ctx;
mutex_lock(&gctx->mutex);
perf_remove_from_context(group_leader, false);
/*
* Removing from the context ends up with disabled
* event. What we want here is event in the initial
* startup state, ready to be add into new context.
*/
perf_event__state_init(group_leader);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
perf_remove_from_context(sibling, false);
perf_event__state_init(sibling);
put_ctx(gctx);
}
mutex_unlock(&gctx->mutex);
put_ctx(gctx);
}
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
if (move_group) {
synchronize_rcu();
perf_install_in_context(ctx, group_leader, group_leader->cpu);
get_ctx(ctx);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
perf_install_in_context(ctx, sibling, sibling->cpu);
get_ctx(ctx);
}
}
perf_install_in_context(ctx, event, event->cpu);
perf_unpin_context(ctx);
mutex_unlock(&ctx->mutex);
put_online_cpus();
event->owner = current;
mutex_lock(¤t->perf_event_mutex);
list_add_tail(&event->owner_entry, ¤t->perf_event_list);
mutex_unlock(¤t->perf_event_mutex);
/*
* Precalculate sample_data sizes
*/
perf_event__header_size(event);
perf_event__id_header_size(event);
/*
* Drop the reference on the group_event after placing the
* new event on the sibling_list. This ensures destruction
* of the group leader will find the pointer to itself in
* perf_group_detach().
*/
fdput(group);
fd_install(event_fd, event_file);
return event_fd;
err_context:
perf_unpin_context(ctx);
put_ctx(ctx);
err_alloc:
free_event(event);
err_cpus:
put_online_cpus();
err_task:
if (task)
put_task_struct(task);
err_group_fd:
fdput(group);
err_fd:
put_unused_fd(event_fd);
return err;
} | 1016 | True | 1 |
||
CVE-2016-6787 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 31095224.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | SYSCALL_DEFINE5 | SYSCALL_DEFINE5( perf_event_open , struct perf_event_attr __user * , attr_uptr , pid_t , pid , int , cpu , int , group_fd , unsigned long , flags) | ['perf_event_open', 'attr_uptr', 'pid_t', 'pid', 'int', 'cpu', 'int', 'group_fd', 'long', 'flags'] | SYSCALL_DEFINE5(perf_event_open,
struct perf_event_attr __user *, attr_uptr,
pid_t, pid, int, cpu, int, group_fd, unsigned long, flags)
{
struct perf_event *group_leader = NULL, *output_event = NULL;
struct perf_event *event, *sibling;
struct perf_event_attr attr;
struct perf_event_context *ctx;
struct file *event_file = NULL;
struct fd group = {NULL, 0};
struct task_struct *task = NULL;
struct pmu *pmu;
int event_fd;
int move_group = 0;
int err;
int f_flags = O_RDWR;
/* for future expandability... */
if (flags & ~PERF_FLAG_ALL)
return -EINVAL;
err = perf_copy_attr(attr_uptr, &attr);
if (err)
return err;
if (!attr.exclude_kernel) {
if (perf_paranoid_kernel() && !capable(CAP_SYS_ADMIN))
return -EACCES;
}
if (attr.freq) {
if (attr.sample_freq > sysctl_perf_event_sample_rate)
return -EINVAL;
} else {
if (attr.sample_period & (1ULL << 63))
return -EINVAL;
}
/*
* In cgroup mode, the pid argument is used to pass the fd
* opened to the cgroup directory in cgroupfs. The cpu argument
* designates the cpu on which to monitor threads from that
* cgroup.
*/
if ((flags & PERF_FLAG_PID_CGROUP) && (pid == -1 || cpu == -1))
return -EINVAL;
if (flags & PERF_FLAG_FD_CLOEXEC)
f_flags |= O_CLOEXEC;
event_fd = get_unused_fd_flags(f_flags);
if (event_fd < 0)
return event_fd;
if (group_fd != -1) {
err = perf_fget_light(group_fd, &group);
if (err)
goto err_fd;
group_leader = group.file->private_data;
if (flags & PERF_FLAG_FD_OUTPUT)
output_event = group_leader;
if (flags & PERF_FLAG_FD_NO_GROUP)
group_leader = NULL;
}
if (pid != -1 && !(flags & PERF_FLAG_PID_CGROUP)) {
task = find_lively_task_by_vpid(pid);
if (IS_ERR(task)) {
err = PTR_ERR(task);
goto err_group_fd;
}
}
if (task && group_leader &&
group_leader->attr.inherit != attr.inherit) {
err = -EINVAL;
goto err_task;
}
get_online_cpus();
event = perf_event_alloc(&attr, cpu, task, group_leader, NULL,
NULL, NULL);
if (IS_ERR(event)) {
err = PTR_ERR(event);
goto err_cpus;
}
if (flags & PERF_FLAG_PID_CGROUP) {
err = perf_cgroup_connect(pid, event, &attr, group_leader);
if (err) {
__free_event(event);
goto err_cpus;
}
}
if (is_sampling_event(event)) {
if (event->pmu->capabilities & PERF_PMU_CAP_NO_INTERRUPT) {
err = -ENOTSUPP;
goto err_alloc;
}
}
account_event(event);
/*
* Special case software events and allow them to be part of
* any hardware group.
*/
pmu = event->pmu;
if (group_leader &&
(is_software_event(event) != is_software_event(group_leader))) {
if (is_software_event(event)) {
/*
* If event and group_leader are not both a software
* event, and event is, then group leader is not.
*
* Allow the addition of software events to !software
* groups, this is safe because software events never
* fail to schedule.
*/
pmu = group_leader->pmu;
} else if (is_software_event(group_leader) &&
(group_leader->group_flags & PERF_GROUP_SOFTWARE)) {
/*
* In case the group is a pure software group, and we
* try to add a hardware event, move the whole group to
* the hardware context.
*/
move_group = 1;
}
}
/*
* Get the target context (task or percpu):
*/
ctx = find_get_context(pmu, task, event->cpu);
if (IS_ERR(ctx)) {
err = PTR_ERR(ctx);
goto err_alloc;
}
if (task) {
put_task_struct(task);
task = NULL;
}
/*
* Look up the group leader (we will attach this event to it):
*/
if (group_leader) {
err = -EINVAL;
/*
* Do not allow a recursive hierarchy (this new sibling
* becoming part of another group-sibling):
*/
if (group_leader->group_leader != group_leader)
goto err_context;
/*
* Do not allow to attach to a group in a different
* task or CPU context:
*/
if (move_group) {
/*
* Make sure we're both on the same task, or both
* per-cpu events.
*/
if (group_leader->ctx->task != ctx->task)
goto err_context;
/*
* Make sure we're both events for the same CPU;
* grouping events for different CPUs is broken; since
* you can never concurrently schedule them anyhow.
*/
if (group_leader->cpu != event->cpu)
goto err_context;
} else {
if (group_leader->ctx != ctx)
goto err_context;
}
/*
* Only a group leader can be exclusive or pinned
*/
if (attr.exclusive || attr.pinned)
goto err_context;
}
if (output_event) {
err = perf_event_set_output(event, output_event);
if (err)
goto err_context;
}
event_file = anon_inode_getfile("[perf_event]", &perf_fops, event,
f_flags);
if (IS_ERR(event_file)) {
err = PTR_ERR(event_file);
goto err_context;
}
if (move_group) {
struct perf_event_context *gctx = group_leader->ctx;
mutex_lock(&gctx->mutex);
perf_remove_from_context(group_leader, false);
/*
* Removing from the context ends up with disabled
* event. What we want here is event in the initial
* startup state, ready to be add into new context.
*/
perf_event__state_init(group_leader);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
perf_remove_from_context(sibling, false);
perf_event__state_init(sibling);
put_ctx(gctx);
}
mutex_unlock(&gctx->mutex);
put_ctx(gctx);
}
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
if (move_group) {
synchronize_rcu();
perf_install_in_context(ctx, group_leader, group_leader->cpu);
get_ctx(ctx);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
perf_install_in_context(ctx, sibling, sibling->cpu);
get_ctx(ctx);
}
}
perf_install_in_context(ctx, event, event->cpu);
perf_unpin_context(ctx);
mutex_unlock(&ctx->mutex);
put_online_cpus();
event->owner = current;
mutex_lock(¤t->perf_event_mutex);
list_add_tail(&event->owner_entry, ¤t->perf_event_list);
mutex_unlock(¤t->perf_event_mutex);
/*
* Precalculate sample_data sizes
*/
perf_event__header_size(event);
perf_event__id_header_size(event);
/*
* Drop the reference on the group_event after placing the
* new event on the sibling_list. This ensures destruction
* of the group leader will find the pointer to itself in
* perf_group_detach().
*/
fdput(group);
fd_install(event_fd, event_file);
return event_fd;
err_context:
perf_unpin_context(ctx);
put_ctx(ctx);
err_alloc:
free_event(event);
err_cpus:
put_online_cpus();
err_task:
if (task)
put_task_struct(task);
err_group_fd:
fdput(group);
err_fd:
put_unused_fd(event_fd);
return err;
} | 1016 | True | 1 |
||
CVE-2016-6786 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_disable | perf_event_disable( struct perf_event * event) | ['event'] | void perf_event_disable(struct perf_event *event)
{
struct perf_event_context *ctx = event->ctx;
struct task_struct *task = ctx->task;
if (!task) {
/*
* Disable the event on the cpu that it's on
*/
cpu_function_call(event->cpu, __perf_event_disable, event);
return;
}
retry:
if (!task_function_call(task, __perf_event_disable, event))
return;
raw_spin_lock_irq(&ctx->lock);
/*
* If the event is still active, we need to retry the cross-call.
*/
if (event->state == PERF_EVENT_STATE_ACTIVE) {
raw_spin_unlock_irq(&ctx->lock);
/*
* Reload the task pointer, it might have been changed by
* a concurrent perf_event_context_sched_out().
*/
task = ctx->task;
goto retry;
}
/*
* Since we have the lock this context can't be scheduled
* in, so we can change the state safely.
*/
if (event->state == PERF_EVENT_STATE_INACTIVE) {
update_group_times(event);
event->state = PERF_EVENT_STATE_OFF;
}
raw_spin_unlock_irq(&ctx->lock);
} | 127 | True | 1 |
||
CVE-2016-6787 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 31095224.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_disable | perf_event_disable( struct perf_event * event) | ['event'] | void perf_event_disable(struct perf_event *event)
{
struct perf_event_context *ctx = event->ctx;
struct task_struct *task = ctx->task;
if (!task) {
/*
* Disable the event on the cpu that it's on
*/
cpu_function_call(event->cpu, __perf_event_disable, event);
return;
}
retry:
if (!task_function_call(task, __perf_event_disable, event))
return;
raw_spin_lock_irq(&ctx->lock);
/*
* If the event is still active, we need to retry the cross-call.
*/
if (event->state == PERF_EVENT_STATE_ACTIVE) {
raw_spin_unlock_irq(&ctx->lock);
/*
* Reload the task pointer, it might have been changed by
* a concurrent perf_event_context_sched_out().
*/
task = ctx->task;
goto retry;
}
/*
* Since we have the lock this context can't be scheduled
* in, so we can change the state safely.
*/
if (event->state == PERF_EVENT_STATE_INACTIVE) {
update_group_times(event);
event->state = PERF_EVENT_STATE_OFF;
}
raw_spin_unlock_irq(&ctx->lock);
} | 127 | True | 1 |
||
CVE-2016-6786 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_enable | perf_event_enable( struct perf_event * event) | ['event'] | void perf_event_enable(struct perf_event *event)
{
struct perf_event_context *ctx = event->ctx;
struct task_struct *task = ctx->task;
if (!task) {
/*
* Enable the event on the cpu that it's on
*/
cpu_function_call(event->cpu, __perf_event_enable, event);
return;
}
raw_spin_lock_irq(&ctx->lock);
if (event->state >= PERF_EVENT_STATE_INACTIVE)
goto out;
/*
* If the event is in error state, clear that first.
* That way, if we see the event in error state below, we
* know that it has gone back into error state, as distinct
* from the task having been scheduled away before the
* cross-call arrived.
*/
if (event->state == PERF_EVENT_STATE_ERROR)
event->state = PERF_EVENT_STATE_OFF;
retry:
if (!ctx->is_active) {
__perf_event_mark_enabled(event);
goto out;
}
raw_spin_unlock_irq(&ctx->lock);
if (!task_function_call(task, __perf_event_enable, event))
return;
raw_spin_lock_irq(&ctx->lock);
/*
* If the context is active and the event is still off,
* we need to retry the cross-call.
*/
if (ctx->is_active && event->state == PERF_EVENT_STATE_OFF) {
/*
* task could have been flipped by a concurrent
* perf_event_context_sched_out()
*/
task = ctx->task;
goto retry;
}
out:
raw_spin_unlock_irq(&ctx->lock);
} | 162 | True | 1 |
||
CVE-2016-6787 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 31095224.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_enable | perf_event_enable( struct perf_event * event) | ['event'] | void perf_event_enable(struct perf_event *event)
{
struct perf_event_context *ctx = event->ctx;
struct task_struct *task = ctx->task;
if (!task) {
/*
* Enable the event on the cpu that it's on
*/
cpu_function_call(event->cpu, __perf_event_enable, event);
return;
}
raw_spin_lock_irq(&ctx->lock);
if (event->state >= PERF_EVENT_STATE_INACTIVE)
goto out;
/*
* If the event is in error state, clear that first.
* That way, if we see the event in error state below, we
* know that it has gone back into error state, as distinct
* from the task having been scheduled away before the
* cross-call arrived.
*/
if (event->state == PERF_EVENT_STATE_ERROR)
event->state = PERF_EVENT_STATE_OFF;
retry:
if (!ctx->is_active) {
__perf_event_mark_enabled(event);
goto out;
}
raw_spin_unlock_irq(&ctx->lock);
if (!task_function_call(task, __perf_event_enable, event))
return;
raw_spin_lock_irq(&ctx->lock);
/*
* If the context is active and the event is still off,
* we need to retry the cross-call.
*/
if (ctx->is_active && event->state == PERF_EVENT_STATE_OFF) {
/*
* task could have been flipped by a concurrent
* perf_event_context_sched_out()
*/
task = ctx->task;
goto retry;
}
out:
raw_spin_unlock_irq(&ctx->lock);
} | 162 | True | 1 |
||
CVE-2016-6786 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_for_each | perf_event_for_each( struct perf_event * event , void(*func)(struct perf_event*)) | ['event', 'void'] | static void perf_event_for_each(struct perf_event *event,
void (*func)(struct perf_event *))
{
struct perf_event_context *ctx = event->ctx;
struct perf_event *sibling;
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
event = event->group_leader;
perf_event_for_each_child(event, func);
list_for_each_entry(sibling, &event->sibling_list, group_entry)
perf_event_for_each_child(sibling, func);
mutex_unlock(&ctx->mutex);
} | 88 | True | 1 |
||
CVE-2016-6787 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 31095224.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_for_each | perf_event_for_each( struct perf_event * event , void(*func)(struct perf_event*)) | ['event', 'void'] | static void perf_event_for_each(struct perf_event *event,
void (*func)(struct perf_event *))
{
struct perf_event_context *ctx = event->ctx;
struct perf_event *sibling;
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
event = event->group_leader;
perf_event_for_each_child(event, func);
list_for_each_entry(sibling, &event->sibling_list, group_entry)
perf_event_for_each_child(sibling, func);
mutex_unlock(&ctx->mutex);
} | 88 | True | 1 |
||
CVE-2016-6786 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_read_group | perf_event_read_group( struct perf_event * event , u64 read_format , char __user * buf) | ['event', 'read_format', 'buf'] | static int perf_event_read_group(struct perf_event *event,
u64 read_format, char __user *buf)
{
struct perf_event *leader = event->group_leader, *sub;
int n = 0, size = 0, ret = -EFAULT;
struct perf_event_context *ctx = leader->ctx;
u64 values[5];
u64 count, enabled, running;
mutex_lock(&ctx->mutex);
count = perf_event_read_value(leader, &enabled, &running);
values[n++] = 1 + leader->nr_siblings;
if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
values[n++] = enabled;
if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
values[n++] = running;
values[n++] = count;
if (read_format & PERF_FORMAT_ID)
values[n++] = primary_event_id(leader);
size = n * sizeof(u64);
if (copy_to_user(buf, values, size))
goto unlock;
ret = size;
list_for_each_entry(sub, &leader->sibling_list, group_entry) {
n = 0;
values[n++] = perf_event_read_value(sub, &enabled, &running);
if (read_format & PERF_FORMAT_ID)
values[n++] = primary_event_id(sub);
size = n * sizeof(u64);
if (copy_to_user(buf + ret, values, size)) {
ret = -EFAULT;
goto unlock;
}
ret += size;
}
unlock:
mutex_unlock(&ctx->mutex);
return ret;
} | 278 | True | 1 |
||
CVE-2016-6787 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 31095224.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_read_group | perf_event_read_group( struct perf_event * event , u64 read_format , char __user * buf) | ['event', 'read_format', 'buf'] | static int perf_event_read_group(struct perf_event *event,
u64 read_format, char __user *buf)
{
struct perf_event *leader = event->group_leader, *sub;
int n = 0, size = 0, ret = -EFAULT;
struct perf_event_context *ctx = leader->ctx;
u64 values[5];
u64 count, enabled, running;
mutex_lock(&ctx->mutex);
count = perf_event_read_value(leader, &enabled, &running);
values[n++] = 1 + leader->nr_siblings;
if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
values[n++] = enabled;
if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
values[n++] = running;
values[n++] = count;
if (read_format & PERF_FORMAT_ID)
values[n++] = primary_event_id(leader);
size = n * sizeof(u64);
if (copy_to_user(buf, values, size))
goto unlock;
ret = size;
list_for_each_entry(sub, &leader->sibling_list, group_entry) {
n = 0;
values[n++] = perf_event_read_value(sub, &enabled, &running);
if (read_format & PERF_FORMAT_ID)
values[n++] = primary_event_id(sub);
size = n * sizeof(u64);
if (copy_to_user(buf + ret, values, size)) {
ret = -EFAULT;
goto unlock;
}
ret += size;
}
unlock:
mutex_unlock(&ctx->mutex);
return ret;
} | 278 | True | 1 |
||
CVE-2016-6786 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_refresh | perf_event_refresh( struct perf_event * event , int refresh) | ['event', 'refresh'] | int perf_event_refresh(struct perf_event *event, int refresh)
{
/*
* not supported on inherited events
*/
if (event->attr.inherit || !is_sampling_event(event))
return -EINVAL;
atomic_add(refresh, &event->event_limit);
perf_event_enable(event);
return 0;
} | 48 | True | 1 |
||
CVE-2016-6787 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 31095224.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_refresh | perf_event_refresh( struct perf_event * event , int refresh) | ['event', 'refresh'] | int perf_event_refresh(struct perf_event *event, int refresh)
{
/*
* not supported on inherited events
*/
if (event->attr.inherit || !is_sampling_event(event))
return -EINVAL;
atomic_add(refresh, &event->event_limit);
perf_event_enable(event);
return 0;
} | 48 | True | 1 |
||
CVE-2016-6786 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_reset | perf_event_reset( struct perf_event * event) | ['event'] | static void perf_event_reset(struct perf_event *event)
{
(void)perf_event_read(event);
local64_set(&event->count, 0);
perf_event_update_userpage(event);
} | 32 | True | 1 |
||
CVE-2016-6787 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 31095224.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_reset | perf_event_reset( struct perf_event * event) | ['event'] | static void perf_event_reset(struct perf_event *event)
{
(void)perf_event_read(event);
local64_set(&event->count, 0);
perf_event_update_userpage(event);
} | 32 | True | 1 |
||
CVE-2016-6786 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_task_disable | perf_event_task_disable( void) | ['void'] | int perf_event_task_disable(void)
{
struct perf_event *event;
mutex_lock(¤t->perf_event_mutex);
list_for_each_entry(event, ¤t->perf_event_list, owner_entry)
perf_event_for_each_child(event, perf_event_disable);
mutex_unlock(¤t->perf_event_mutex);
return 0;
} | 48 | True | 1 |
||
CVE-2016-6787 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 31095224.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_task_disable | perf_event_task_disable( void) | ['void'] | int perf_event_task_disable(void)
{
struct perf_event *event;
mutex_lock(¤t->perf_event_mutex);
list_for_each_entry(event, ¤t->perf_event_list, owner_entry)
perf_event_for_each_child(event, perf_event_disable);
mutex_unlock(¤t->perf_event_mutex);
return 0;
} | 48 | True | 1 |
||
CVE-2016-6786 | False | False | False | False | AV:L/AC:M/Au:N/C:C/I:C/A:C | LOCAL | MEDIUM | NONE | COMPLETE | COMPLETE | COMPLETE | 6.9 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | LOCAL | HIGH | LOW | NONE | UNCHANGED | HIGH | HIGH | HIGH | 7.0 | HIGH | 1.0 | 5.9 | nan | [{'url': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'https://github.com/torvalds/linux/commit/f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1403842', 'refsource': 'CONFIRM', 'tags': ['Issue Tracking']}, {'url': 'http://source.android.com/security/bulletin/2016-12-01.html', 'name': 'http://source.android.com/security/bulletin/2016-12-01.html', 'refsource': 'CONFIRM', 'tags': ['Third Party Advisory']}, {'url': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'name': 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f63a8daa5812afef4f06c962351687e1ff9ccb2b', 'refsource': 'CONFIRM', 'tags': ['Patch', 'Vendor Advisory']}, {'url': 'http://www.securityfocus.com/bid/94679', 'name': '94679', 'refsource': 'BID', 'tags': []}, {'url': 'http://www.debian.org/security/2017/dsa-3791', 'name': 'DSA-3791', 'refsource': 'DEBIAN', 'tags': []}] | [{'description': [{'lang': 'en', 'value': 'CWE-264'}]}] | MEDIUM | [{'operator': 'OR', 'children': [], 'cpe_match': [{'vulnerable': True, 'cpe23Uri': 'cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*', 'versionEndIncluding': '3.19.8', 'cpe_name': []}]}] | [{'lang': 'en', 'value': 'kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.'}] | 2017-11-04T01:29Z | 2016-12-28T07:59Z | Permissions, Privileges, and Access Controls | Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control. | https://cwe.mitre.org/data/definitions/264.html | 1 | Peter Zijlstra | 2015-01-23 12:24:14+01:00 | perf: Fix event->ctx locking
There have been a few reported issues wrt. the lack of locking around
changing event->ctx. This patch tries to address those.
It avoids the whole rwsem thing; and while it appears to work, please
give it some thought in review.
What I did fail at is sensible runtime checks on the use of
event->ctx, the RCU use makes it very hard.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]> | f63a8daa5812afef4f06c962351687e1ff9ccb2b | False | torvalds/linux | Linux kernel source tree | 2011-09-04 22:48:12 | 2022-08-26 19:08:15 | torvalds | 136917.0 | 44307.0 | perf_event_task_enable | perf_event_task_enable( void) | ['void'] | int perf_event_task_enable(void)
{
struct perf_event *event;
mutex_lock(¤t->perf_event_mutex);
list_for_each_entry(event, ¤t->perf_event_list, owner_entry)
perf_event_for_each_child(event, perf_event_enable);
mutex_unlock(¤t->perf_event_mutex);
return 0;
} | 48 | True | 1 |
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