This is a note to let you know that I've just added the patch titled
crypto: sahara - handle zero-length aes requests
to the 5.15-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-sahara-handle-zero-length-aes-requests.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit dc862be15cfc1f6780ba2a36fc29f8a7939e9b2b
Author: Ovidiu Panait <ovidiu.panait@xxxxxxxxxxxxx>
Date: Sun Dec 24 10:21:31 2023 +0200
crypto: sahara - handle zero-length aes requests
[ Upstream commit d1d6351e37aac14b32a291731d0855996c459d11 ]
In case of a zero-length input, exit gracefully from sahara_aes_crypt().
Fixes: 5de8875281e1 ("crypto: sahara - Add driver for SAHARA2 accelerator.")
Signed-off-by: Ovidiu Panait <ovidiu.panait@xxxxxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c
index bbd2c6474b50..3229dd180d0c 100644
--- a/drivers/crypto/sahara.c
+++ b/drivers/crypto/sahara.c
@@ -677,6 +677,9 @@ static int sahara_aes_crypt(struct skcipher_request *req, unsigned long mode)
struct sahara_dev *dev = dev_ptr;
int err = 0;
+ if (!req->cryptlen)
+ return 0;
+
if (unlikely(ctx->keylen != AES_KEYSIZE_128))
return sahara_aes_fallback(req, mode);
