MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-07-05 13:25:20 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

crypto: algif_hash - fix double free in hash_accept

Browse Source 
commit b2df03ed4052e97126267e8c13ad4204ea6ba9b6 upstream.

If accept(2) is called on socket type algif_hash with
MSG_MORE flag set and crypto_ahash_import fails,
sk2 is freed. However, it is also freed in af_alg_release,
leading to slab-use-after-free error.

Fixes: fe869cdb89 ("crypto: algif_hash - User-space interface for hash operations")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ivan Pravdin <ipravdin.official@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ivan Pravdin 2025-05-18 18:41:02 -04:00 committed by Greg Kroah-Hartman
parent 3cb003b959
commit f0f3d09f53
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
crypto/algif_hash.c
View File

@ -263,10 +263,6 @@ static int hash_accept(struct socket *sock, struct socket *newsock, int flags,
return err; return err;
err = crypto_ahash_import(&ctx2->req, state); err = crypto_ahash_import(&ctx2->req, state);
if (err) {
sock_orphan(sk2);
sock_put(sk2);
}
return err; return err;
} }