Patch "crypto: sha3-generic - fixes for alignment and big endian operation" has been added to the 4.15-stable tree

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

crypto: sha3-generic - fixes for alignment and big endian operation

to the 4.15-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-sha3-generic-fixes-for-alignment-and-big-endian-operation.patch
and it can be found in the queue-4.15 subdirectory.

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

From: Ard Biesheuvel <[email protected]>
Date: Fri, 19 Jan 2018 12:04:33 +0000
Subject: crypto: sha3-generic - fixes for alignment and big endian operation

From: Ard Biesheuvel <[email protected]>

commit c013cee99d5a18aec8c71fee8f5f41369cd12595 upstream.

Ensure that the input is byte swabbed before injecting it into the SHA3 transform. Use the get_unaligned() accessor for this so that we don't perform unaligned access inadvertently on architectures that do not support that.

---
 crypto/sha3_generic.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

@@ -18,6 +18,7 @@
 #include <linux/types.h>
 #include <crypto/sha3.h>
 #include <asm/byteorder.h>
+#include <asm/unaligned.h>
 
 #define KECCAK_ROUNDS 24
 

@@ -149,7 +150,7 @@ static int sha3_update(struct shash_desc
 			unsigned int i;
 
 			for (i = 0; i < sctx->rsizw; i++)
-				sctx->st[i] ^= ((u64 *) src)[i];
+				sctx->st[i] ^= get_unaligned_le64(src + 8 * i);
 			keccakf(sctx->st);
 
 			done += sctx->rsiz;

@@ -174,7 +175,7 @@ static int sha3_final(struct shash_desc
 	sctx->buf[sctx->rsiz - 1] |= 0x80;
 
 	for (i = 0; i < sctx->rsizw; i++)
-		sctx->st[i] ^= ((u64 *) sctx->buf)[i];
+		sctx->st[i] ^= get_unaligned_le64(sctx->buf + 8 * i);
 
 	keccakf(sctx->st);
 

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

queue-4.15/crypto-sha3-generic-fixes-for-alignment-and-big-endian-operation.patch