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[1/2] crypto: ccree: use the full crypt length value

Message ID 20190729104020.3681-2-gilad@benyossef.com
State New
Headers show
Series [1/2] crypto: ccree: use the full crypt length value | expand

Commit Message

Gilad Ben-Yossef July 29, 2019, 10:40 a.m. UTC 
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+
---
 drivers/crypto/ccree/cc_aead.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.21.0
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Patch

diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index 19abb872329c..8a6c825d40e8 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -268,7 +268,7 @@  static void cc_aead_complete(struct device *dev, void *cc_req, int err)
 			/* 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;
 		}
 	/*ENCRYPT*/