From: Johan Hovold <johan@kernel.org>
Date: Mon, 13 Mar 2017 12:53:55 +0000 (-0300)
Subject: usbvision: fix NULL-deref at probe
X-Git-Tag: v3.2.92~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc63d977beaa8a317f99ac6d7c843965007bd2c1;p=pandora-kernel.git

usbvision: fix NULL-deref at probe

commit eacb975b48272f54532b62f515a3cf7eefa35123 upstream.

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer or accessing memory beyond the endpoint array should a
malicious device lack the expected endpoints.

Fixes: 2a9f8b5d25be ("V4L/DVB (5206): Usbvision: set alternate interface
modification")

Cc: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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