From b123af8beb89a6b07930692f87133d306620c253 Mon Sep 17 00:00:00 2001 From: Ovidiu Panait Date: Sun, 24 Dec 2023 10:21:31 +0200 Subject: [PATCH] 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 Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/sahara.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c index a109f9b..96f59d5 100644 --- a/drivers/crypto/sahara.c +++ b/drivers/crypto/sahara.c @@ -676,6 +676,9 @@ 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); -- 2.7.4