From: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Date: Tue, 5 Nov 2013 17:18:01 +0000 (-0800)
Subject: cfg80211: check regulatory request alpha2 early
X-Git-Tag: v3.14-rc1~94^2~334^2^2~137
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e438768ff9b22c83a968e14b79e8c83128e8bfe4;p=pandora-kernel.git

cfg80211: check regulatory request alpha2 early

Currently nl80211 allows userspace to send the kernel
a bogus regulatory domain with at most 32 rules set
and it won't reject it until after its allocated
memory. Let's be smart about it and take advantage
that the last_request is now available under RTNL
and check if the alpha2 matches an expected request
and reject any bogus userspace requests prior to
hitting the memory allocator.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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