Fix drbg_ossl_ctx_free() and drbg_nonce_ossl_ctx_free() to handle NULL
If these were passed NULL, the crashed with a SIGSEGV, when they
should do like all other freeing functions and become a no-op.
@@ -191,6 +191,9 @@ static void drbg_ossl_ctx_free(void *vdgbl)
{
DRBG_GLOBAL *dgbl = vdgbl;
+ if (dgbl == NULL)
+ return;
+
RAND_DRBG_free(dgbl->master_drbg);
CRYPTO_THREAD_cleanup_local(&dgbl->private_drbg);
CRYPTO_THREAD_cleanup_local(&dgbl->public_drbg);
@@ -230,6 +233,9 @@ static void drbg_nonce_ossl_ctx_free(void *vdngbl)
{
DRBG_NONCE_GLOBAL *dngbl = vdngbl;
+ if (dngbl == NULL)
+ return;
+
CRYPTO_THREAD_lock_free(dngbl->rand_nonce_lock);
OPENSSL_free(dngbl);
