This is a note to let you know that I've just added the patch titled
mac80211: refuse aggregations sessions before authorized
to the 5.16-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-refuse-aggregations-sessions-before-authori.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8c92152b48e04b6858009ffb1f3dc19e853ff267
Author: Johannes Berg <johannes.berg@xxxxxxxxx>
Date: Thu Feb 3 20:15:29 2022 +0100
mac80211: refuse aggregations sessions before authorized
[ Upstream commit a6bce78262f5dd4b50510f0aa47f3995f7b185f3 ]
If an MFP station isn't authorized, the receiver will (or
at least should) drop the action frame since it's a robust
management frame, but if we're not authorized we haven't
installed keys yet. Refuse attempts to start a session as
they'd just time out.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220203201528.ff4d5679dce9.I34bb1f2bc341e161af2d6faf74f91b332ba11285@changeid
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 74a878f213d3..1deb3d874a4b 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -9,7 +9,7 @@
* Copyright 2007, Michael Wu <flamingice@xxxxxxxxxxxx>
* Copyright 2007-2010, Intel Corporation
* Copyright(c) 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018 - 2021 Intel Corporation
+ * Copyright (C) 2018 - 2022 Intel Corporation
*/
#include <linux/ieee80211.h>
@@ -626,6 +626,14 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
return -EINVAL;
}
+ if (test_sta_flag(sta, WLAN_STA_MFP) &&
+ !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
+ ht_dbg(sdata,
+ "MFP STA not authorized - deny BA session request %pM tid %d\n",
+ sta->sta.addr, tid);
+ return -EINVAL;
+ }
+
/*
* 802.11n-2009 11.5.1.1: If the initiating STA is an HT STA, is a
* member of an IBSS, and has no other existing Block Ack agreement
