[ 3.5.y.z extended stable ] Patch "mac80211: fix AP-mode frame matching" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    mac80211: fix AP-mode frame matching

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 662ab25991b6ac286143d5edd30fab4f791833d1 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg at intel.com>
Date: Mon, 13 May 2013 16:42:40 +0200
Subject: [PATCH] mac80211: fix AP-mode frame matching

commit 2b9ccd4e4308272e5aec614b77c5385e7ec2ec90 upstream.

In AP mode, ignore frames with mis-matched BSSID that aren't
multicast or sent to the correct destination. This fixes
reporting public action frames to userspace multiple times
on multiple virtual AP interfaces.

Reported-by: Jouni Malinen <j at w1.fi>
Signed-off-by: Johannes Berg <johannes.berg at intel.com>
[ luis: adjust context ]
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 net/mac80211/rx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 064384c..1914a65 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2861,6 +2861,9 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
 			 * and location updates. Note that mac80211
 			 * itself never looks at these frames.
 			 */
+			if (!multicast &&
+			    !ether_addr_equal(sdata->vif.addr, hdr->addr1))
+				return 0;
 			if (!(status->rx_flags & IEEE80211_RX_IN_SCAN) &&
 			    ieee80211_is_public_action(hdr, skb->len))
 				return 1;
--
1.8.1.2