linux-kernel - [PATCH 4.19 137/639] crypto: tgr192

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Message-Id: <20200124093104.429890457@linuxfoundation.org>
Date:   Fri, 24 Jan 2020 10:25:07 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Eric Biggers <ebiggers@...gle.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 137/639] crypto: tgr192 - fix unaligned memory access

From: Eric Biggers <ebiggers@...gle.com>

[ Upstream commit f990f7fb58ac8ac9a43316f09a48cff1a49dda42 ]

Fix an unaligned memory access in tgr192_transform() by using the
unaligned access helpers.

Fixes: 06ace7a9bafe ("[CRYPTO] Use standard byte order macros wherever possible")
Signed-off-by: Eric Biggers <ebiggers@...gle.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 crypto/tgr192.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/crypto/tgr192.c b/crypto/tgr192.c
index 022d3dd76c3b2..f8e1d9f9938f5 100644
--- a/crypto/tgr192.c
+++ b/crypto/tgr192.c
@@ -25,8 +25,9 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/mm.h>
-#include <asm/byteorder.h>
 #include <linux/types.h>
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
 
 #define TGR192_DIGEST_SIZE 24
 #define TGR160_DIGEST_SIZE 20
@@ -468,10 +469,9 @@ static void tgr192_transform(struct tgr192_ctx *tctx, const u8 * data)
 	u64 a, b, c, aa, bb, cc;
 	u64 x[8];
 	int i;
-	const __le64 *ptr = (const __le64 *)data;
 
 	for (i = 0; i < 8; i++)
-		x[i] = le64_to_cpu(ptr[i]);
+		x[i] = get_unaligned_le64(data + i * sizeof(__le64));
 
 	/* save */
 	a = aa = tctx->a;
-- 
2.20.1