From: Sven Schnelle <svens@stackframe.org>
Date: Fri, 17 Aug 2012 19:43:43 +0000 (+0200)
Subject: USB: CDC ACM: Fix NULL pointer dereference
X-Git-Tag: v3.2.29~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=76e0246b1c62a12db0c9af652be580019ee4666a;p=pandora-kernel.git

USB: CDC ACM: Fix NULL pointer dereference

commit 99f347caa4568cb803862730b3b1f1942639523f upstream.

If a device specifies zero endpoints in its interface descriptor,
the kernel oopses in acm_probe(). Even though that's clearly an
invalid descriptor, we should test wether we have all endpoints.
This is especially bad as this oops can be triggered by just
plugging a USB device in.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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