From: Jouni Malinen <jouni@qca.qualcomm.com>
Date: Wed, 21 Sep 2011 13:13:07 +0000 (+0300)
Subject: cfg80211: Fix validation of AKM suites
X-Git-Tag: v3.1-rc9~23^2^2^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1b9ca0272ffae212e726380f66777b30a56ed7a5;p=pandora-kernel.git

cfg80211: Fix validation of AKM suites

Incorrect variable was used in validating the akm_suites array from
NL80211_ATTR_AKM_SUITES. In addition, there was no explicit
validation of the array length (we only have room for
NL80211_MAX_NR_AKM_SUITES).

This can result in a buffer write overflow for stack variables with
arbitrary data from user space. The nl80211 commands using the affected
functionality require GENL_ADMIN_PERM, so this is only exposed to admin
users.

Cc: stable@kernel.org
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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