[media] V4L2: ov7670: fix a wrong index, potentially Oopsing the kernel from user...
authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Mon, 14 Apr 2014 13:49:34 +0000 (10:49 -0300)
committerMauro Carvalho Chehab <m.chehab@samsung.com>
Tue, 13 May 2014 23:03:02 +0000 (20:03 -0300)
commitcfece5857ca51d1dcdb157017aba226f594e9dcf
treef6c6c09126ee46f307ba422f75b217f00c60d6a0
parente6a623460e5fc960ac3ee9f946d3106233fd28d8
[media] V4L2: ov7670: fix a wrong index, potentially Oopsing the kernel from user-space

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 <g.liakhovetski@gmx.de>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
drivers/media/i2c/ov7670.c