[openssl] master update
Dr. Paul Dale
pauli at openssl.org
Thu Aug 27 03:46:17 UTC 2020
The branch master has been updated
via 625679b6d79296e020bb0cad31d6ac24ad547a39 (commit)
from a149f7502458dc022501c2347629cc847f2e1298 (commit)
- Log -----------------------------------------------------------------
commit 625679b6d79296e020bb0cad31d6ac24ad547a39
Author: Pauli <paul.dale at oracle.com>
Date: Wed Aug 26 14:36:50 2020 +1000
EVP: NULL pctx pointer after free.
Not doing so can result in a double free.
Reviewed-by: Richard Levitte <levitte at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12718)
-----------------------------------------------------------------------
Summary of changes:
crypto/evp/digest.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/crypto/evp/digest.c b/crypto/evp/digest.c
index f9ba59ca63..c9b4e3fd6e 100644
--- a/crypto/evp/digest.c
+++ b/crypto/evp/digest.c
@@ -34,8 +34,10 @@ int EVP_MD_CTX_reset(EVP_MD_CTX *ctx)
* pctx should be freed by the user of EVP_MD_CTX
* if EVP_MD_CTX_FLAG_KEEP_PKEY_CTX is set
*/
- if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
+ if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX)) {
EVP_PKEY_CTX_free(ctx->pctx);
+ ctx->pctx = NULL;
+ }
#endif
EVP_MD_free(ctx->fetched_digest);
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