| From stable+bounces-242002-greg=kroah.com@vger.kernel.org Thu Apr 30 08:10:13 2026 |
| From: Eric Biggers <ebiggers@kernel.org> |
| Date: Wed, 29 Apr 2026 23:07:01 -0700 |
| Subject: crypto: authencesn - Fix src offset when decrypting in-place |
| To: stable@vger.kernel.org |
| Cc: linux-crypto@vger.kernel.org, Herbert Xu <herbert@gondor.apana.org.au>, Wolfgang Walter <linux@stwm.de>, Eric Biggers <ebiggers@kernel.org> |
| Message-ID: <20260430060702.110091-8-ebiggers@kernel.org> |
| |
| From: Herbert Xu <herbert@gondor.apana.org.au> |
| |
| commit 1f48ad3b19a9dfc947868edda0bb8e48e5b5a8fa upstream. |
| |
| The src SG list offset wasn't set properly when decrypting in-place, |
| fix it. |
| |
| Reported-by: Wolfgang Walter <linux@stwm.de> |
| Fixes: e02494114ebf ("crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption") |
| Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
| Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| crypto/authencesn.c | 6 ++++-- |
| 1 file changed, 4 insertions(+), 2 deletions(-) |
| |
| --- a/crypto/authencesn.c |
| +++ b/crypto/authencesn.c |
| @@ -233,9 +233,11 @@ static int crypto_authenc_esn_decrypt_ta |
| |
| decrypt: |
| |
| - if (src != dst) |
| - src = scatterwalk_ffwd(areq_ctx->src, src, assoclen); |
| dst = scatterwalk_ffwd(areq_ctx->dst, dst, assoclen); |
| + if (req->src == req->dst) |
| + src = dst; |
| + else |
| + src = scatterwalk_ffwd(areq_ctx->src, src, assoclen); |
| |
| skcipher_request_set_tfm(skreq, ctx->enc); |
| skcipher_request_set_callback(skreq, flags, |
