From ae211053c771562a27a53c2a49f20f720a7c473d Mon Sep 17 00:00:00 2001
From: Vladis Dronov <vdronov@redhat.com>
Date: Wed, 23 Mar 2016 11:53:46 -0700
Subject: [PATCH] Input: ati_remote2 - fix crashes on detecting device with
 invalid descriptor

commit 950336ba3e4a1ffd2ca60d29f6ef386dd2c7351d upstream.

The ati_remote2 driver expects at least two interfaces with one
endpoint each. If given malicious descriptor that specify one
interface or no endpoints, it will crash in the probe function.
Ensure there is at least two interfaces and one endpoint for each
interface before using it.

The full disclosure: http://seclists.org/bugtraq/2016/Mar/90

Reported-by: Ralf Spenneberg <ralf@spenneberg.net>
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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