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From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: David Airlie <airlied@linux.ie>, dri-devel@lists.freedesktop.org
Subject: [PATCH] drm/ttm: make sure format string cannot leak in
Date: Thu, 11 Sep 2014 13:53:54 -0700	[thread overview]
Message-ID: <20140911205354.GA2959@www.outflux.net> (raw)

While zone->name is currently hard coded, the call to kobject_init_and_add()
should follow the more defensive argument list usage (as already done in
other places in ttm_memory.c) where "%s" is used instead of directly passing
in a variable as a format string.

Signed-off-by: Kees Cook <keescook@chromium.org>
---
 drivers/gpu/drm/ttm/ttm_memory.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ttm/ttm_memory.c b/drivers/gpu/drm/ttm/ttm_memory.c
index fa53df487875..1e688b603e46 100644
--- a/drivers/gpu/drm/ttm/ttm_memory.c
+++ b/drivers/gpu/drm/ttm/ttm_memory.c
@@ -300,7 +300,8 @@ static int ttm_mem_init_highmem_zone(struct ttm_mem_global *glob,
 	zone->glob = glob;
 	glob->zone_highmem = zone;
 	ret = kobject_init_and_add(
-		&zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, zone->name);
+		&zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, "%s",
+		zone->name);
 	if (unlikely(ret != 0)) {
 		kobject_put(&zone->kobj);
 		return ret;
-- 
1.9.1


-- 
Kees Cook
Chrome OS Security

             reply	other threads:[~2014-09-11 20:54 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-11 20:53 Kees Cook [this message]
2014-09-12  8:28 ` [PATCH] drm/ttm: make sure format string cannot leak in David Herrmann
2014-09-12  8:28   ` David Herrmann

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