[media] cx231xx-cards: fix NULL-deref on missing association descriptor
authorJohan Hovold <johan@kernel.org>
Thu, 21 Sep 2017 08:40:18 +0000 (05:40 -0300)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>
Wed, 4 Oct 2017 20:03:47 +0000 (17:03 -0300)
commit6c3b047fa2d2286d5e438bcb470c7b1a49f415f6
treeb073603335487ab43e7655812a438682f21ca909
parentd17dd2db943272b6d9d1315528cde9dad74fa6ed
[media] cx231xx-cards: fix NULL-deref on missing association descriptor

Make sure to check that we actually have an Interface Association
Descriptor before dereferencing it during probe to avoid dereferencing a
NULL-pointer.

Fixes: e0d3bafd0258 ("V4L/DVB (10954): Add cx231xx USB driver")

Cc: stable <stable@vger.kernel.org> # 2.6.30
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
drivers/media/usb/cx231xx/cx231xx-cards.c