[PATCH 5.4 103/309] crypto: ccree - fix AEAD decrypt auth fail

[Greg Kroah-Hartman]

From: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx>

commit 2a6bc713f1cef32e39e3c4e6f2e1a9849da6379c upstream.

On AEAD decryption authentication failure we are suppose to
zero out the output plaintext buffer. However, we've missed
skipping the optional associated data that may prefix the
ciphertext. This commit fixes this issue.

Signed-off-by: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx>
Fixes: e88b27c8eaa8 ("crypto: ccree - use std api sg_zero_buffer")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/crypto/ccree/cc_aead.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -237,7 +237,7 @@ static void cc_aead_complete(struct devi
 			 * revealed the decrypted message --> zero its memory.
 			 */
 			sg_zero_buffer(areq->dst, sg_nents(areq->dst),
-				       areq->cryptlen, 0);
+				       areq->cryptlen, areq->assoclen);
 			err = -EBADMSG;
 		}
 	/*ENCRYPT*/