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linux/net/wireless
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Johannes Berg 95ad70db21 wifi: cfg80211: wext: set ssids=NULL for passive scans 
commit 0941772342 upstream.

In nl80211, we always set the ssids of a scan request to
NULL when n_ssids==0 (passive scan). Drivers have relied
on this behaviour in the past, so we fixed it in 6 GHz
scan requests as well, and added a warning so we'd have
assurance the API would always be called that way.

syzbot found that wext doesn't ensure that, so we reach
the check and trigger the warning. Fix the wext code to
set the ssids pointer to NULL when there are none.

Reported-by: syzbot+cd6135193ba6bb9ad158@syzkaller.appspotmail.com
Fixes: f7a8b10bfd ("wifi: cfg80211: fix 6 GHz scan request building")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-07-25 09:49:20 +02:00
..
certs wifi: cfg80211: fix certs build to not depend on file order 2024-01-01 12:39:02 +00:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
ap.c wifi: cfg80211: do some rework towards MLO link APIs 2022-06-20 12:54:58 +02:00
chan.c wifi: nl80211: relax wdev mutex check in wdev_chandef() 2022-07-01 11:42:58 +02:00
core.c wifi: cfg80211: fully move wiphy work to unbound workqueue 2024-06-21 14:35:31 +02:00
core.h wifi: cfg80211: fix CQM for non-range use 2024-01-01 12:39:09 +00:00
debugfs.c wifi: cfg80211: debugfs: fix return type in ht40allow_map_read() 2022-08-25 10:04:46 +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 wifi: cfg80211: use strscpy to replace strlcpy 2022-07-15 11:43:12 +02:00
ibss.c wifi: cfg80211: Add link_id parameter to various key operations for MLO 2022-08-25 10:41:05 +02:00
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 wifi: use struct_group to copy addresses 2022-09-03 16:40:06 +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: fix CONFIG_CFG80211_EXTRA_REGDB_KEYDIR typo 2022-03-01 14:10:14 +01:00
mesh.c wifi: cfg80211: do some rework towards MLO link APIs 2022-06-20 12:54:58 +02:00
mlme.c wifi: cfg80211: reject auth/assoc to AP with our address 2023-09-23 11:11:03 +02:00
nl80211.c wifi: nl80211: don't free NULL coalescing rule 2024-05-17 11:55:50 +02:00
nl80211.h wifi: cfg80211/nl80211: move rx management data into a struct 2022-07-22 14:28:26 +02:00
ocb.c wifi: cfg80211: ocb: don't leave if not joined 2023-09-23 11:11:03 +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 2024-06-21 14:35:31 +02:00
radiotap.c mac80211: Use flex-array for radiotap header bitmap 2021-08-13 09:58:25 +02:00
rdev-ops.h wifi: cfg80211: fix 6 GHz scan request building 2024-07-25 09:49:09 +02:00
reg.c wifi: cfg80211: fix regulatory disconnect for non-MLO 2023-07-19 16:22:09 +02:00
reg.h cfg80211: avoid holding the RTNL when calling the driver 2021-01-26 11:55:50 +01:00
scan.c wifi: cfg80211: wext: set ssids=NULL for passive scans 2024-07-25 09:49:20 +02:00
sme.c wifi: cfg80211: hold wiphy lock in auto-disconnect 2023-10-10 22:00:39 +02:00
sysfs.c wifi: cfg80211: fully move wiphy work to unbound workqueue 2024-06-21 14:35:31 +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 2024-06-12 11:02:58 +02:00
util.c wifi: cfg80211: Lock wiphy in cfg80211_get_station 2024-06-21 14:35:31 +02:00
wext-compat.c wifi: cfg80211: Add link_id parameter to various key operations for MLO 2022-08-25 10:41:05 +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() 2023-07-27 08:50:35 +02:00
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 wifi: cfg80211: do some rework towards MLO link APIs 2022-06-20 12:54:58 +02:00
wext-spy.c wireless: wext-spy: Fix out-of-bounds warning 2021-06-23 10:57:17 +02:00