From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Mon, 14 Apr 2014 13:49:34 +0000 (-0300)
Subject: V4L2: ov7670: fix a wrong index, potentially Oopsing the kernel from user-space
X-Git-Tag: v3.2.60~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=379da4902351474bb78b6bcf56b531d9ec2b25db;p=pandora-kernel.git

V4L2: ov7670: fix a wrong index, potentially Oopsing the kernel from user-space

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 <g.liakhovetski@gmx.de>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
[bwh: Backported to 3.2:
 - Adjust filename
 - win_sizes array is static, not per-device]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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