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domenico
2025-06-24 15:51:28 +02:00
commit 22031d9dab
6862 changed files with 1462554 additions and 0 deletions
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package/kernel/mac80211/patches/481-mac80211-Check-port-authorization-in-the-ieee80211_t.patch Normal file
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@@ -0,0 +1,54 @@
From 07dc42ff9b9c38eae221b36acda7134ab8670af8 Mon Sep 17 00:00:00 2001
From: Jouni Malinen <jouni@codeaurora.org>
Date: Thu, 26 Mar 2020 15:51:34 +0100
Subject: [PATCH] mac80211: Check port authorization in the
ieee80211_tx_dequeue() case
commit ce2e1ca703071723ca2dd94d492a5ab6d15050da upstream.
mac80211 used to check port authorization in the Data frame enqueue case
when going through start_xmit(). However, that authorization status may
change while the frame is waiting in a queue. Add a similar check in the
dequeue case to avoid sending previously accepted frames after
authorization change. This provides additional protection against
potential leaking of frames after a station has been disconnected and
the keys for it are being removed.
Cc: stable@vger.kernel.org
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200326155133.ced84317ea29.I34d4c47cd8cc8a4042b38a76f16a601fbcbfd9b3@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mac80211/tx.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -3496,8 +3496,25 @@ begin:
tx.sdata = vif_to_sdata(info->control.vif);
tx.hdrlen = ieee80211_padded_hdrlen(hw, hdr->frame_control);
- if (txq->sta)
+ if (txq->sta) {
tx.sta = container_of(txq->sta, struct sta_info, sta);
+ /*
+ * Drop unicast frames to unauthorised stations unless they are
+ * EAPOL frames from the local station.
+ */
+ if (unlikely(!ieee80211_vif_is_mesh(&tx.sdata->vif) &&
+ tx.sdata->vif.type != NL80211_IFTYPE_OCB &&
+ !is_multicast_ether_addr(hdr->addr1) &&
+ !test_sta_flag(tx.sta, WLAN_STA_AUTHORIZED) &&
+ (!(info->control.flags &
+ IEEE80211_TX_CTRL_PORT_CTRL_PROTO) ||
+ !ether_addr_equal(tx.sdata->vif.addr,
+ hdr->addr2)))) {
+ I802_DEBUG_INC(local->tx_handlers_drop_unauth_port);
+ ieee80211_free_txskb(&local->hw, skb);
+ goto begin;
+ }
+ }
/*
* The key can be removed while the packet was queued, so need to call