5.15-stable review patch. If anyone has any objections, please let me know.
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From: Ovidiu Panait ovidiu.panait@windriver.com
[ 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@windriver.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/sahara.c | 3 +++ 1 file changed, 3 insertions(+)
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);