From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Johannes Berg <johannes.berg@intel.com>,
Luca Coelho <luciano.coelho@intel.com>,
Sasha Levin <sashal@kernel.org>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 313/371] mac80211: accept deauth frames in IBSS mode
Date: Thu, 16 Jan 2020 12:23:05 -0500 [thread overview]
Message-ID: <20200116172403.18149-256-sashal@kernel.org> (raw)
In-Reply-To: <20200116172403.18149-1-sashal@kernel.org>
From: Johannes Berg <johannes.berg@intel.com>
[ Upstream commit 95697f9907bfe3eab0ef20265a766b22e27dde64 ]
We can process deauth frames and all, but we drop them very
early in the RX path today - this could never have worked.
Fixes: 2cc59e784b54 ("mac80211: reply to AUTH with DEAUTH if sta allocation fails in IBSS")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/20191004123706.15768-2-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/rx.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 4a6b3c7b35e3..31000622376d 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3227,9 +3227,18 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
/* process for all: mesh, mlme, ibss */
break;
+ case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
+ if (is_multicast_ether_addr(mgmt->da) &&
+ !is_broadcast_ether_addr(mgmt->da))
+ return RX_DROP_MONITOR;
+
+ /* process only for station/IBSS */
+ if (sdata->vif.type != NL80211_IFTYPE_STATION &&
+ sdata->vif.type != NL80211_IFTYPE_ADHOC)
+ return RX_DROP_MONITOR;
+ break;
case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
- case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
if (is_multicast_ether_addr(mgmt->da) &&
!is_broadcast_ether_addr(mgmt->da))
--
2.20.1
next prev parent reply other threads:[~2020-01-16 18:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200116172403.18149-1-sashal@kernel.org>
2020-01-16 17:18 ` [PATCH AUTOSEL 4.14 067/371] iwlwifi: mvm: avoid possible access out of array Sasha Levin
2020-01-16 17:19 ` [PATCH AUTOSEL 4.14 069/371] iwlwifi: mvm: fix A-MPDU reference assignment Sasha Levin
2020-01-16 17:19 ` [PATCH AUTOSEL 4.14 080/371] iwlwifi: mvm: fix RSS config command Sasha Levin
2020-01-16 17:22 ` [PATCH AUTOSEL 4.14 251/371] libertas_tf: Use correct channel range in lbtf_geo_init Sasha Levin
2020-01-16 17:22 ` [PATCH AUTOSEL 4.14 273/371] mac80211: minstrel_ht: fix per-group max throughput rate initialization Sasha Levin
2020-01-16 17:22 ` [PATCH AUTOSEL 4.14 285/371] bcma: fix incorrect update of BCMA_CORE_PCI_MDIO_DATA Sasha Levin
2020-01-16 17:22 ` [PATCH AUTOSEL 4.14 287/371] ath9k: dynack: fix possible deadlock in ath_dynack_node_{de}init Sasha Levin
2020-01-16 17:22 ` [PATCH AUTOSEL 4.14 299/371] ath10k: adjust skb length in ath10k_sdio_mbox_rx_packet Sasha Levin
2020-01-16 17:23 ` Sasha Levin [this message]
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 329/371] mt7601u: fix bbp version check in mt7601u_wait_bbp_ready Sasha Levin
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 333/371] cw1200: Fix a signedness bug in cw1200_load_firmware() Sasha Levin
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 338/371] rtlwifi: Remove unnecessary NULL check in rtl_regd_init Sasha Levin
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