[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
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Commit Message

Gilad Ben-Yossef July 29, 2019, 10:40 a.m.
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

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*/