From: Johan Hovold <johan@kernel.org>
Date: Mon, 13 Mar 2017 12:53:59 +0000 (-0300)
Subject: gspca: konica: add missing endpoint sanity check
X-Git-Tag: v3.2.92~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f9c685264bca3c6619fc92fd4b6df925021d5de;p=pandora-kernel.git

gspca: konica: add missing endpoint sanity check

commit aa58fedb8c7b6cf2f05941d238495f9e2f29655c upstream.

Make sure to check the number of endpoints to avoid accessing memory
beyond the endpoint array should a device lack the expected endpoints.

Note that, as far as I can tell, the gspca framework has already made
sure there is at least one endpoint in the current alternate setting so
there should be no risk for a NULL-pointer dereference here.

Fixes: b517af722860 ("V4L/DVB: gspca_konica: New gspca subdriver for
konica chipset using cams")

Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Hans Verkuil <hansverk@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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