From: David Herrmann <dh.herrmann@gmail.com>
Date: Tue, 26 Nov 2013 12:58:18 +0000 (+0100)
Subject: HID: uhid: fix leak for 64/32 UHID_CREATE
X-Git-Tag: v3.13-rc2~18^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=80897aa787ecd58eabb29deab7cbec9249c9b7e6;p=pandora-kernel.git

HID: uhid: fix leak for 64/32 UHID_CREATE

UHID allows short writes so user-space can omit unused fields. We
automatically set them to 0 in the kernel. However, the 64/32 bit
compat-handler didn't do that in the UHID_CREATE fallback. This will
reveal random kernel heap data (of random size, even) to user-space.

Fixes: befde0226a59 ('HID: uhid: make creating devices work on 64/32 systems')

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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