[PATCH 3.14 21/38] mac80211: drop unencrypted frames in mesh fwding

From: Greg Kroah-Hartman
Date: Fri Apr 10 2015 - 09:53:15 EST

3.14-stable review patch. If anyone has any objections, please let me know.


From: Bob Copeland <me@xxxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxxxx>
Signed-off-by: Bob Copeland <me@xxxxxxxxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

net/mac80211/rx.c | 3 +++
1 file changed, 3 insertions(+)

--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2107,6 +2107,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80
hdr = (struct ieee80211_hdr *) skb->data;
mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);

+ if (ieee80211_drop_unencrypted(rx, hdr->frame_control))
/* frame is in RMC, don't forward */
if (ieee80211_is_data(hdr->frame_control) &&
is_multicast_ether_addr(hdr->addr1) &&

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