From: Bob Copeland <me@bobcopeland.com>
Date: Mon, 2 Mar 2015 19:28:52 +0000 (-0500)
Subject: mac80211: drop unencrypted frames in mesh fwding
X-Git-Tag: v3.19.4~38
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d22db2725c02cc7cf374077d0fc130cf69e7a0cf;p=thirdparty%2Fkernel%2Fstable.git

mac80211: drop unencrypted frames in mesh fwding

commit d0c22119f574b851e63360c6b8660fe9593bbc3c upstream.

The mesh forwarding path was not checking that data
frames were protected when running an encrypted network;
add the necessary check.

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index d69ca513848e7..b448e8ff32136 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2191,6 +2191,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
 	hdr = (struct ieee80211_hdr *) skb->data;
 	mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
 
+	if (ieee80211_drop_unencrypted(rx, hdr->frame_control))
+		return RX_DROP_MONITOR;
+
 	/* frame is in RMC, don't forward */
 	if (ieee80211_is_data(hdr->frame_control) &&
 	    is_multicast_ether_addr(hdr->addr1) &&