From: Gilad Ben-Yossef <gilad@benyossef.com>
Date: Mon, 29 Jul 2019 13:40:18 +0300
Subject: crypto: ccree - use the full crypt length value
Git-commit: 7a4be6c113c1f721818d1e3722a9015fe393295c
Patch-mainline: 5.4-rc1
References: bnc#1151927 5.3.6

In case of AEAD decryption verifcation error we were using the
wrong value to zero out the plaintext buffer leaving the end of
the buffer with the false plaintext.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Fixes: ff27e85a85bb ("crypto: ccree - add AEAD support")
CC: stable@vger.kernel.org # v4.17+
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 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
@@ -236,7 +236,7 @@ static void cc_aead_complete(struct devi
 			/* In case of payload authentication failure, MUST NOT
 			 * revealed the decrypted message --> zero its memory.
 			 */
-			cc_zero_sgl(areq->dst, areq_ctx->cryptlen);
+			cc_zero_sgl(areq->dst, areq->cryptlen);
 			err = -EBADMSG;
 		}
 	} else { /*ENCRYPT*/