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 <stable@xxxxxxxxxxxxxxx> know about it. >From c013cee99d5a18aec8c71fee8f5f41369cd12595 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> Date: Fri, 19 Jan 2018 12:04:33 +0000 Subject: crypto: sha3-generic - fixes for alignment and big endian operation From: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> 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. Fixes: 53964b9ee63b7075 ("crypto: sha3 - Add SHA-3 hash algorithm") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- crypto/sha3_generic.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/crypto/sha3_generic.c +++ b/crypto/sha3_generic.c @@ -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 ard.biesheuvel@xxxxxxxxxx are queue-4.15/crypto-sha3-generic-fixes-for-alignment-and-big-endian-operation.patch