From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Mon, 23 Oct 2017 23:46:00 +0000 (-0700)
Subject: Input: gtco - fix potential out-of-bound access
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2de544fd1b16f76f8dd1213d585ce611155ccd34;p=pandora-kernel.git

Input: gtco - fix potential out-of-bound access

commit a50829479f58416a013a4ccca791336af3c584c7 upstream.

parse_hid_report_descriptor() has a while (i < length) loop, which
only guarantees that there's at least 1 byte in the buffer, but the
loop body can read multiple bytes which causes out-of-bounds access.

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[bwh: Backported to 3.2: use &device->usbdev->dev as the device for dev_err()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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