From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, YueHaibing <yuehaibing@huawei.com>,
Johannes Berg <johannes.berg@intel.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.19 04/12] mac80211: Drop frames from invalid MAC address in ad-hoc mode
Date: Thu, 14 Oct 2021 16:54:04 +0200 [thread overview]
Message-ID: <20211014145206.702722726@linuxfoundation.org> (raw)
In-Reply-To: <20211014145206.566123760@linuxfoundation.org>
From: YueHaibing <yuehaibing@huawei.com>
[ Upstream commit a6555f844549cd190eb060daef595f94d3de1582 ]
WARNING: CPU: 1 PID: 9 at net/mac80211/sta_info.c:554
sta_info_insert_rcu+0x121/0x12a0
Modules linked in:
CPU: 1 PID: 9 Comm: kworker/u8:1 Not tainted 5.14.0-rc7+ #253
Workqueue: phy3 ieee80211_iface_work
RIP: 0010:sta_info_insert_rcu+0x121/0x12a0
...
Call Trace:
ieee80211_ibss_finish_sta+0xbc/0x170
ieee80211_ibss_work+0x13f/0x7d0
ieee80211_iface_work+0x37a/0x500
process_one_work+0x357/0x850
worker_thread+0x41/0x4d0
If an Ad-Hoc node receives packets with invalid source MAC address,
it hits a WARN_ON in sta_info_insert_check(), this can spam the log.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20210827144230.39944-1-yuehaibing@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/rx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 012697efafc3..e0baa563a4de 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3875,7 +3875,8 @@ static bool ieee80211_accept_frame(struct ieee80211_rx_data *rx)
if (!bssid)
return false;
if (ether_addr_equal(sdata->vif.addr, hdr->addr2) ||
- ether_addr_equal(sdata->u.ibss.bssid, hdr->addr2))
+ ether_addr_equal(sdata->u.ibss.bssid, hdr->addr2) ||
+ !is_valid_ether_addr(hdr->addr2))
return false;
if (ieee80211_is_beacon(hdr->frame_control))
return true;
--
2.33.0
next prev parent reply other threads:[~2021-10-14 15:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-14 14:54 [PATCH 4.19 00/12] 4.19.212-rc1 review Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 01/12] net: phy: bcm7xxx: Fixed indirect MMD operations Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 02/12] HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 03/12] netfilter: ip6_tables: zero-initialize fragment offset Greg Kroah-Hartman
2021-10-14 14:54 ` Greg Kroah-Hartman [this message]
2021-10-14 14:54 ` [PATCH 4.19 05/12] m68k: Handle arrivals of multiple signals correctly Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 06/12] net: prevent user from passing illegal stab size Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 07/12] mac80211: check return value of rhashtable_init Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 08/12] net: sun: SUNVNET_COMMON should depend on INET Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 09/12] scsi: ses: Fix unsigned comparison with less than zero Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 10/12] scsi: virtio_scsi: Fix spelling mistake "Unsupport" -> "Unsupported" Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 11/12] perf/x86: Reset destroy callback on event init failure Greg Kroah-Hartman
2021-10-14 14:54 ` [PATCH 4.19 12/12] sched: Always inline is_percpu_thread() Greg Kroah-Hartman
2021-10-14 18:32 ` [PATCH 4.19 00/12] 4.19.212-rc1 review Jon Hunter
2021-10-14 21:07 ` Pavel Machek
2021-10-14 22:39 ` Shuah Khan
2021-10-15 7:20 ` Samuel Zou
2021-10-15 14:33 ` Sudip Mukherjee
2021-10-15 17:34 ` Daniel Díaz
2021-10-15 22:06 ` Guenter Roeck
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211014145206.702722726@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=johannes.berg@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=sashal@kernel.org \
--cc=stable@vger.kernel.org \
--cc=yuehaibing@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.