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crypto: sahara - handle zero-length aes requests

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[ Upstream commit d1d6351e37aac14b32a291731d0855996c459d11 ]

In case of a zero-length input, exit gracefully from sahara_aes_crypt().

Fixes: 5de8875281 ("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>
This commit is contained in:
Ovidiu Panait 2023-12-24 10:21:31 +02:00 • committed by Greg Kroah-Hartman
parent 0545801b30
commit a75ba66b69
1 changed files with 3 additions and 0 deletions
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3
drivers/crypto/sahara.c
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@ -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);