5.4-stable review patch. If anyone has any objections, please let me know.
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From: Herbert Xu herbert@gondor.apana.org.au
[ Upstream commit 8a4e047c6cc07676f637608a9dd675349b5de0a7 ]
Do not access random memory for zero-length skcipher requests. Just return 0.
Fixes: f63601fd616a ("crypto: marvell/cesa - add a new driver for Marvell's CESA") Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/marvell/cipher.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/crypto/marvell/cipher.c b/drivers/crypto/marvell/cipher.c index c7d433d1cd99d..f92f86c94bff7 100644 --- a/drivers/crypto/marvell/cipher.c +++ b/drivers/crypto/marvell/cipher.c @@ -447,6 +447,9 @@ static int mv_cesa_skcipher_queue_req(struct skcipher_request *req, struct mv_cesa_skcipher_req *creq = skcipher_request_ctx(req); struct mv_cesa_engine *engine;
+ if (!req->cryptlen) + return 0; + ret = mv_cesa_skcipher_req_init(req, tmpl); if (ret) return ret;