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| author | Eric Biggers | 2017-11-28 09:46:24 +0100 |
|---|---|---|
| committer | Herbert Xu | 2017-11-29 03:39:14 +0100 |
| commit | 887207ed9e5812ed9239b6d07185a2d35dda91db (patch) | |
| tree | cadb413b15f8fd9699ad3f48638795a7bb9fb31e /crypto/shash.c | |
| parent | crypto: algif_aead - fix reference counting of null skcipher (diff) | |
| download | kernel-qcow2-linux-887207ed9e5812ed9239b6d07185a2d35dda91db.tar.gz kernel-qcow2-linux-887207ed9e5812ed9239b6d07185a2d35dda91db.tar.xz kernel-qcow2-linux-887207ed9e5812ed9239b6d07185a2d35dda91db.zip | |
crypto: af_alg - fix NULL pointer dereference in
af_alg_free_areq_sgls()
If allocating the ->tsgl member of 'struct af_alg_async_req' failed,
during cleanup we dereferenced the NULL ->tsgl pointer in
af_alg_free_areq_sgls(), because ->tsgl_entries was nonzero.
Fix it by only freeing the ->tsgl list if it is non-NULL.
This affected both algif_skcipher and algif_aead.
Fixes: e870456d8e7c ("crypto: algif_skcipher - overhaul memory management")
Fixes: d887c52d6ae4 ("crypto: algif_aead - overhaul memory management")
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: <stable@vger.kernel.org> # v4.14+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/shash.c')
0 files changed, 0 insertions, 0 deletions