Patch "mac80211: mesh: drop frames appearing to be from us" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

mac80211: mesh: drop frames appearing to be from us

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:

     mac80211-mesh-drop-frames-appearing-to-be-from-us.patch

and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Johannes Berg <[email protected]>
Date: Thu, 4 Jan 2018 15:51:53 +0100
Subject: mac80211: mesh: drop frames appearing to be from us

From: Johannes Berg <[email protected]>

[ Upstream commit 736a80bbfda709fb3631f5f62056f250a38e5804 ]

If there are multiple mesh stations with the same MAC address, they will both get confused and start throwing warnings.

Obviously in this case nothing can actually work anyway, so just drop frames that look like they're from ourselves early on.

---
 net/mac80211/rx.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -3632,6 +3632,8 @@ static bool ieee80211_accept_frame(struc
 		}
 		return true;
 	case NL80211_IFTYPE_MESH_POINT:
+		if (ether_addr_equal(sdata->vif.addr, hdr->addr2))
+			return false;
 		if (multicast)
 			return true;
 		return ether_addr_equal(sdata->vif.addr, hdr->addr1);

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/mac80211_hwsim-fix-a-possible-sleep-in-atomic-bug-in-hwsim_get_radio_nl.patch queue-4.14/nl80211-check-for-the-required-netlink-attribute-presence.patch queue-4.14/mac80211-mesh-drop-frames-appearing-to-be-from-us.patch