openwrtv4/target/linux/generic/patches-3.10/046-UBI-avoid-workqueue-format-string-leak.patch
John Crispin c8d472c37f kernel: backport the ubiblock patches from 3.14->3.10
Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 41120
2014-06-11 12:59:15 +00:00

30 lines
1 KiB
Diff

From bebfef150e0b8fa68704cddacf05b8c26462d565 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Mon, 7 Apr 2014 21:44:07 -0700
Subject: [PATCH] UBI: avoid workqueue format string leak
When building the name for the workqueue thread, make sure a format
string cannot leak in from the disk name.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
---
drivers/mtd/ubi/block.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c
index 7ff473c..8d659e6 100644
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -431,7 +431,7 @@ int ubiblock_create(struct ubi_volume_info *vi)
* Create one workqueue per volume (per registered block device).
* Rembember workqueues are cheap, they're not threads.
*/
- dev->wq = alloc_workqueue(gd->disk_name, 0, 0);
+ dev->wq = alloc_workqueue("%s", 0, 0, gd->disk_name);
if (!dev->wq)
goto out_free_queue;
INIT_WORK(&dev->work, ubiblock_do_work);
--
1.9.2