linux/net/wireless
Dmitry Antipov ff040562c1 wifi: cfg80211: fix use-after-free in cmp_bss()
[ Upstream commit 26e84445f0 ]

Following bss_free() quirk introduced in commit 776b358017
("cfg80211: track hidden SSID networks properly"), adjust
cfg80211_update_known_bss() to free the last beacon frame
elements only if they're not shared via the corresponding
'hidden_beacon_bss' pointer.

Reported-by: syzbot+30754ca335e6fb7e3092@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=30754ca335e6fb7e3092
Fixes: 3ab8227d3e ("cfg80211: refactor cfg80211_bss_update")
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://patch.msgid.link/20250813135236.799384-1-dmantipov@yandex.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-09-09 18:50:18 +02:00
..
certs wifi: cfg80211: fix certs build to not depend on file order 2024-01-05 15:13:33 +01:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
ap.c cfg80211: call disconnect_wk when AP stops 2019-02-01 11:12:50 +01:00
chan.c cfg80211: add cfg80211_any_usable_channels() 2021-06-23 13:05:08 +02:00
core.c wifi: cfg80211: lock wiphy mutex for rfkill poll 2024-01-25 14:52:27 -08:00
core.h Revert "wifi: cfg80211: check wiphy mutex is held for wdev mutex" 2024-10-17 15:10:41 +02:00
debugfs.c wifi: cfg80211: debugfs: fix return type in ht40allow_map_read() 2022-09-08 12:28:02 +02:00
debugfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ethtool.c cfg80211: check wiphy driver existence for drvinfo report 2020-02-07 12:53:26 +01:00
ibss.c cfg80211: avoid holding the RTNL when calling the driver 2021-01-26 11:55:50 +01:00
Kconfig cfg80211: select CONFIG_CRC32 2021-01-05 15:50:36 -08:00
lib80211.c lib80211: Remove unused macro DRV_NAME 2020-09-18 11:53:00 +02:00
lib80211_crypt_ccmp.c lib80211: use crypto API ccm(aes) transform for CCMP processing 2019-07-26 13:22:47 +02:00
lib80211_crypt_tkip.c mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
lib80211_crypt_wep.c mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
Makefile cfg80211: make certificate generation more robust 2021-06-18 13:25:15 +02:00
mesh.c cfg80211/mac80211: add mesh_param "mesh_nolearn" to skip path discovery 2020-07-31 09:24:23 +02:00
mlme.c wifi: cfg80211: reject HTC bit for management frames 2025-08-28 16:24:20 +02:00
nl80211.c wifi: nl80211: reject cooked mode if it is set along with other flags 2025-03-13 12:51:03 +01:00
nl80211.h nl80211: fix radio statistics in survey dump 2021-11-25 09:48:34 +01:00
ocb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
of.c cfg80211: support ieee80211-freq-limit DT property 2017-01-06 14:01:13 +01:00
pmsr.c wifi: cfg80211: pmsr: use correct nla_get_uX functions 2024-07-05 09:14:05 +02:00
radiotap.c mac80211: Use flex-array for radiotap header bitmap 2021-08-13 09:58:25 +02:00
rdev-ops.h nl80211: add support for BSS coloring 2021-08-17 11:58:21 +02:00
reg.c wifi: cfg80211: regulatory: improve invalid hints checking 2025-03-13 12:51:02 +01:00
reg.h cfg80211: avoid holding the RTNL when calling the driver 2021-01-26 11:55:50 +01:00
scan.c wifi: cfg80211: fix use-after-free in cmp_bss() 2025-09-09 18:50:18 +02:00
sme.c wifi: cfg80211: fix two more possible UBSAN-detected off-by-one errors 2024-10-17 15:10:45 +02:00
sysfs.c cfg80211: shut down interfaces on failed resume 2021-06-09 16:09:20 +02:00
sysfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace.c cfg80211: add tracing to rdev-ops 2012-10-18 10:53:37 +02:00
trace.h wifi: cfg80211: fix the order of arguments for trace events of the tx_rx_evt class 2024-06-16 13:39:13 +02:00
util.c wifi: cfg80211: handle 2x996 RU allocation in cfg80211_calculate_bitrate_he() 2024-08-19 05:44:57 +02:00
wext-compat.c cfg80211: expose the rfkill device to the low level driver 2021-06-23 11:29:13 +02:00
wext-compat.h treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
wext-core.c wifi: wext-core: Fix -Wstringop-overflow warning in ioctl_standard_iw_point() 2024-03-01 13:21:55 +01:00
wext-priv.c wext: fix potential private ioctl memory content leak 2010-09-20 13:41:40 -04:00
wext-proc.c proc: introduce proc_create_net{,_data} 2018-05-16 07:24:30 +02:00
wext-sme.c cfg80211: avoid holding the RTNL when calling the driver 2021-01-26 11:55:50 +01:00
wext-spy.c wireless: wext-spy: Fix out-of-bounds warning 2021-06-23 10:57:17 +02:00