diff options
| author | Bob Beck <beck@cvs.openbsd.org> | 2018-11-13 01:25:14 +0000 |
|---|---|---|
| committer | Bob Beck <beck@cvs.openbsd.org> | 2018-11-13 01:25:14 +0000 |
| commit | cdcbb6bb9a27d251bad50dbf25c4e6d9c671f54d (patch) | |
| tree | ad806c02fd2c1a21be91bf5a5e8678e63071ed1c | |
| parent | 4a5aa03154e917d78bcbbfc3e980a318bbf0ef6a (diff) | |
NULL out mdctx to prevent possible double free introduced in version 1.4
Spotted by maestre@, ok tb@
| -rw-r--r-- | lib/libssl/tls13_key_schedule.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/libssl/tls13_key_schedule.c b/lib/libssl/tls13_key_schedule.c index af273d6d27e..8a0b3e8af45 100644 --- a/lib/libssl/tls13_key_schedule.c +++ b/lib/libssl/tls13_key_schedule.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tls13_key_schedule.c,v 1.6 2018/11/10 01:34:02 jsing Exp $ */ +/* $OpenBSD: tls13_key_schedule.c,v 1.7 2018/11/13 01:25:13 beck Exp $ */ /* Copyright (c) 2018, Bob Beck <beck@openbsd.org> * * Permission to use, copy, modify, and/or distribute this software for any @@ -151,6 +151,7 @@ tls13_secrets_create(const EVP_MD *digest, int resumption) if (!EVP_DigestFinal_ex(mdctx, secrets->empty_hash.data, &mdlen)) goto err; EVP_MD_CTX_free(mdctx); + mdctx = NULL; if (secrets->empty_hash.len != mdlen) goto err; |