Check for negative return for signature size.Addresses Coverity
@@ -205,6 +205,7 @@ static int test_builtin(int n)
EVP_MD_CTX *mctx = NULL;
size_t sig_len;
int nid, ret = 0;
+ int temp;
nid = curves[n].nid;
@@ -231,9 +232,10 @@ static int test_builtin(int n)
|| !TEST_true(EVP_PKEY_assign_EC_KEY(pkey_neg, eckey_neg)))
goto err;
- sig_len = ECDSA_size(eckey);
+ temp = ECDSA_size(eckey);
- if (!TEST_ptr(sig = OPENSSL_malloc(sig_len))
+ if (!TEST_int_ge(temp, 0)
+ || !TEST_ptr(sig = OPENSSL_malloc(sig_len = (size_t)temp))
/* create a signature */
|| !TEST_true(EVP_DigestSignInit(mctx, NULL, NULL, NULL, pkey))
|| !TEST_true(EVP_DigestSign(mctx, sig, &sig_len, tbs, sizeof(tbs)))
