Patch "crypto: ccp - Fill the result buffer only on digest, finup, and final ops" has been added to the 4.16-stable tree

This is a note to let you know that I've just added the patch titled

crypto: ccp - Fill the result buffer only on digest, finup, and final ops

to the 4.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
crypto-ccp-fill-the-result-buffer-only-on-digest-finup-and-final-ops.patch
and it can be found in the queue-4.16 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Gary R Hook <[email protected]>
Date: Wed, 7 Mar 2018 11:37:42 -0600
Subject: crypto: ccp - Fill the result buffer only on digest, finup, and final ops

From: Gary R Hook <[email protected]>

commit 0ee991be4cdd88587aedbf68cdacd1765f57236a upstream.

Any change to the result buffer should only happen on final, finup and digest operations. Changes to the buffer for update, import, export, etc, are not allowed.

---
 drivers/crypto/ccp/ccp-crypto-aes-cmac.c |    2 +-
 drivers/crypto/ccp/ccp-crypto-sha.c      |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

@@ -46,7 +46,7 @@ static int ccp_aes_cmac_complete(struct
 	}
 
 	/* Update result area if supplied */
-	if (req->result)
+	if (req->result && rctx->final)
 		memcpy(req->result, rctx->iv, digest_size);
 
 e_free:

@@ -47,7 +47,7 @@ static int ccp_sha_complete(struct crypt
 	}
 
 	/* Update result area if supplied */
-	if (req->result)
+	if (req->result && rctx->final)
 		memcpy(req->result, rctx->ctx, digest_size);
 
 e_free:

Patches currently in stable-queue which might be from [email protected] are

queue-4.16/crypto-ccp-fill-the-result-buffer-only-on-digest-finup-and-final-ops.patch queue-4.16/crypto-ccp-return-an-actual-key-size-from-rsa-max_size-callback.patch