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