This is a note to let you know that I've just added the patch titled
ARM: omap2+: fixing wrong strcat for Non-NULL terminated string
to the 4.9-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-omap2-fixing-wrong-strcat-for-non-null-terminated-string.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Fri Aug 4 13:32:40 PDT 2017
From: Maninder Singh <maninder1.s@xxxxxxxxxxx>
Date: Thu, 8 Dec 2016 09:40:30 +0530
Subject: ARM: omap2+: fixing wrong strcat for Non-NULL terminated string
From: Maninder Singh <maninder1.s@xxxxxxxxxxx>
[ Upstream commit 5066d5296ff2db20625e5f46e7338872c90c649f ]
Issue caught with static analysis tool:
"Dangerous usage of 'name' (strncpy doesn't always 0-terminate it)"
Use strlcpy _includes_ the NUL terminator, and strlcat() which ensures
that it won't overflow the buffer.
Reported-by: Maninder Singh <maninder1.s@xxxxxxxxxxx>
Signed-off-by: Vaneet Narang <v.narang@xxxxxxxxxxx>
CC: Russell King <linux@xxxxxxxxxxxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-omap2/omap_hwmod.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -790,14 +790,14 @@ static int _init_main_clk(struct omap_hw
int ret = 0;
char name[MOD_CLK_MAX_NAME_LEN];
struct clk *clk;
+ static const char modck[] = "_mod_ck";
- /* +7 magic comes from '_mod_ck' suffix */
- if (strlen(oh->name) + 7 > MOD_CLK_MAX_NAME_LEN)
+ if (strlen(oh->name) >= MOD_CLK_MAX_NAME_LEN - strlen(modck))
pr_warn("%s: warning: cropping name for %s\n", __func__,
oh->name);
- strncpy(name, oh->name, MOD_CLK_MAX_NAME_LEN - 7);
- strcat(name, "_mod_ck");
+ strlcpy(name, oh->name, MOD_CLK_MAX_NAME_LEN - strlen(modck));
+ strlcat(name, modck, MOD_CLK_MAX_NAME_LEN);
clk = clk_get(NULL, name);
if (!IS_ERR(clk)) {
Patches currently in stable-queue which might be from maninder1.s@xxxxxxxxxxx are
queue-4.9/arm-omap2-fixing-wrong-strcat-for-non-null-terminated-string.patch