This is a note to let you know that I've just added the patch titled
ARM: 8658/1: uaccess: fix zeroing of 64-bit get_user()
to the 4.4-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:
arm-8658-1-uaccess-fix-zeroing-of-64-bit-get_user.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9e3440481845b2ec22508f60837ee2cab2b6054f Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@xxxxxxxxxxxx>
Date: Thu, 16 Feb 2017 01:44:37 +0100
Subject: ARM: 8658/1: uaccess: fix zeroing of 64-bit get_user()
From: Kees Cook <keescook@xxxxxxxxxxxx>
commit 9e3440481845b2ec22508f60837ee2cab2b6054f upstream.
The 64-bit get_user() wasn't clearing the high word due to a typo in the
error handler. The exception handler entry was already correct, though.
Noticed during recent usercopy test additions in lib/test_user_copy.c.
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/lib/getuser.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/lib/getuser.S
+++ b/arch/arm/lib/getuser.S
@@ -67,7 +67,7 @@ ENTRY(__get_user_4)
ENDPROC(__get_user_4)
ENTRY(__get_user_8)
- check_uaccess r0, 8, r1, r2, __get_user_bad
+ check_uaccess r0, 8, r1, r2, __get_user_bad8
#ifdef CONFIG_THUMB2_KERNEL
5: TUSER(ldr) r2, [r0]
6: TUSER(ldr) r3, [r0, #4]
Patches currently in stable-queue which might be from keescook@xxxxxxxxxxxx are
queue-4.4/arm-8658-1-uaccess-fix-zeroing-of-64-bit-get_user.patch