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mac80211: refuse aggregations sessions before authorized

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[ 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@intel.com>
Link: https://lore.kernel.org/r/20220203201528.ff4d5679dce9.I34bb1f2bc341e161af2d6faf74f91b332ba11285@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Johannes Berg 2022-02-03 20:15:29 +01:00 committed by Greg Kroah-Hartman
parent 84ecddbc98
commit c98afa0db3
1 changed files with 9 additions and 1 deletions
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10
net/mac80211/agg-tx.c
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@ -9,7 +9,7 @@
* Copyright 2007, Michael Wu <flamingice@sourmilk.net>
* 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