From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 5 May 2015 14:32:29 +0000 (+0200)
Subject: mac80211: validate cipher scheme PN length better
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~163^2~345^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e3a55b5399d55;p=pandora-kernel.git

mac80211: validate cipher scheme PN length better

Currently, a cipher scheme can advertise an arbitrarily long
sequence counter, but mac80211 only supports up to 16 bytes
and the initial value from userspace will be truncated.

Fix two things:
 * don't allow the driver to register anything longer than
   the 16 bytes that mac80211 reserves space for
 * require userspace to specify a starting value with the
   correct length (or none at all)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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