From: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Date: Tue, 28 Apr 2015 21:51:17 +0000 (-0300)
Subject: cx24116: fix a buffer overflow when checking userspace params
X-Git-Tag: v3.2.71~104
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=729c8c5e3700410e3436573abfa5b68e8d3c89d6;p=pandora-kernel.git

cx24116: fix a buffer overflow when checking userspace params

commit 1fa2337a315a2448c5434f41e00d56b01a22283c upstream.

The maximum size for a DiSEqC command is 6, according to the
userspace API. However, the code allows to write up much more values:
	drivers/media/dvb-frontends/cx24116.c:983 cx24116_send_diseqc_msg() error: buffer overflow 'd->msg' 6 <= 23

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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