This is a note to let you know that I've just added the patch titled
media: V4L2: ov7670: fix a wrong index, potentially Oopsing the kernel from
user-space
to the 3.14-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:
media-v4l2-ov7670-fix-a-wrong-index-potentially-oopsing-the-kernel-from-user-space.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From cfece5857ca51d1dcdb157017aba226f594e9dcf Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <[email protected]>
Date: Mon, 14 Apr 2014 10:49:34 -0300
Subject: media: V4L2: ov7670: fix a wrong index, potentially Oopsing the kernel
from user-space
From: Guennadi Liakhovetski <[email protected]>
commit cfece5857ca51d1dcdb157017aba226f594e9dcf upstream.
Commit 75e2bdad8901a0b599e01a96229be922eef1e488 "ov7670: allow
configuration of image size, clock speed, and I/O method" uses a wrong
index to iterate an array. Apart from being wrong, it also uses an
unchecked value from user-space, which can cause access to unmapped
memory in the kernel, triggered by a normal desktop user with rights to
use V4L2 devices.
Signed-off-by: Guennadi Liakhovetski <[email protected]>
Acked-by: Jonathan Corbet <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/media/i2c/ov7670.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/i2c/ov7670.c
+++ b/drivers/media/i2c/ov7670.c
@@ -1109,7 +1109,7 @@ static int ov7670_enum_framesizes(struct
* windows that fall outside that.
*/
for (i = 0; i < n_win_sizes; i++) {
- struct ov7670_win_size *win = &info->devtype->win_sizes[index];
+ struct ov7670_win_size *win = &info->devtype->win_sizes[i];
if (info->min_width && win->width < info->min_width)
continue;
if (info->min_height && win->height < info->min_height)
Patches currently in stable-queue which might be from [email protected] are
queue-3.14/media-v4l2-fix-vidioc_create_bufs-in-64-32-bit-compatibility-mode.patch
queue-3.14/media-v4l2-ov7670-fix-a-wrong-index-potentially-oopsing-the-kernel-from-user-space.patch
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