This is a note to let you know that I've just added the patch titled
crypto: authenc - Find proper IV address in ablkcipher callback
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
crypto-authenc-find-proper-iv-address-in-ablkcipher-callback.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fc019c7122dfcd69c50142b57a735539aec5da95 Mon Sep 17 00:00:00 2001
From: Tom Lendacky <thomas.lendacky@xxxxxxx>
Date: Tue, 12 Nov 2013 11:46:04 -0600
Subject: crypto: authenc - Find proper IV address in ablkcipher callback
From: Tom Lendacky <thomas.lendacky@xxxxxxx>
commit fc019c7122dfcd69c50142b57a735539aec5da95 upstream.
When performing an asynchronous ablkcipher operation the authenc
completion callback routine is invoked, but it does not locate and use
the proper IV.
The callback routine, crypto_authenc_encrypt_done, is updated to use
the same method of calculating the address of the IV as is done in
crypto_authenc_encrypt function which sets up the callback.
Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
crypto/authenc.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -368,9 +368,10 @@ static void crypto_authenc_encrypt_done(
if (!err) {
struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc);
- struct ablkcipher_request *abreq = aead_request_ctx(areq);
- u8 *iv = (u8 *)(abreq + 1) +
- crypto_ablkcipher_reqsize(ctx->enc);
+ struct authenc_request_ctx *areq_ctx = aead_request_ctx(areq);
+ struct ablkcipher_request *abreq = (void *)(areq_ctx->tail
+ + ctx->reqoff);
+ u8 *iv = (u8 *)abreq - crypto_ablkcipher_ivsize(ctx->enc);
err = crypto_authenc_genicv(areq, iv, 0);
}
Patches currently in stable-queue which might be from thomas.lendacky@xxxxxxx are
queue-3.4/crypto-scatterwalk-set-the-chain-pointer-indication-bit.patch
queue-3.4/crypto-authenc-find-proper-iv-address-in-ablkcipher-callback.patch
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