From: Tobias Herzog <t-herzog@gmx.de>
Date: Thu, 30 Mar 2017 20:15:10 +0000 (+0200)
Subject: cdc-acm: fix possible invalid access when processing notification
X-Git-Tag: v3.2.92~45
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16f2c3dd6aa662eee6f896d8240153d12aed5ba3;p=pandora-kernel.git

cdc-acm: fix possible invalid access when processing notification

commit 1bb9914e1730417d530de9ed37e59efdc647146b upstream.

Notifications may only be 8 bytes long. Accessing the 9th and
10th byte of unimplemented/unknown notifications may be insecure.
Also check the length of known notifications before accessing anything
behind the 8th byte.

Signed-off-by: Tobias Herzog <t-herzog@gmx.de>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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