The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=8179db52c2c8692cdabf818bf1b7fdf3ad43b2db
commit 8179db52c2c8692cdabf818bf1b7fdf3ad43b2db Author: Mark Johnston <[email protected]> AuthorDate: 2022-07-01 15:04:15 +0000 Commit: Mark Johnston <[email protected]> CommitDate: 2022-07-01 15:04:15 +0000 crypto: Fix the NULL_HMAC finalizer The current implementation leaves the digest buffer partially uninitialized. Reported by: syzkaller Reviewed by: jhb MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D35547 --- sys/opencrypto/xform_null.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sys/opencrypto/xform_null.c b/sys/opencrypto/xform_null.c index e070a4a97142..160e1d867792 100644 --- a/sys/opencrypto/xform_null.c +++ b/sys/opencrypto/xform_null.c @@ -135,6 +135,5 @@ null_update(void *ctx, const void *buf, u_int len) static void null_final(uint8_t *buf, void *ctx) { - if (buf != (uint8_t *) 0) - bzero(buf, 12); + bzero(buf, NULL_HASH_LEN); }
