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linux/net/wireless
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Johannes Berg 177d574be4 wifi: nl80211: reject iftype change with mesh ID change 
commit f78c137533 upstream.

It's currently possible to change the mesh ID when the
interface isn't yet in mesh mode, at the same time as
changing it into mesh mode. This leads to an overwrite
of data in the wdev->u union for the interface type it
currently has, causing cfg80211_change_iface() to do
wrong things when switching.

We could probably allow setting an interface to mesh
while setting the mesh ID at the same time by doing a
different order of operations here, but realistically
there's no userspace that's going to do this, so just
disallow changes in iftype when setting mesh ID.

Cc: stable@vger.kernel.org
Fixes: 29cbe68c51 ("cfg80211/mac80211: add mesh join/leave commands")
Reported-by: syzbot+dd4779978217b1973180@syzkaller.appspotmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-03-06 14:48:40 +00:00
..
certs wifi: cfg80211: fix certs build to not depend on file order 2024-01-01 12:42:39 +00:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
ap.c wifi: nl80211: add MLO_LINK_ID to CMD_STOP_AP event 2023-02-14 12:09:17 +01:00
chan.c wifi: cfg80211: move puncturing bitmap validation from mac80211 2023-02-14 12:09:18 +01:00
core.c wifi: cfg80211: fix wiphy delayed work queueing 2024-02-23 09:25:12 +01:00
core.h wifi: cfg80211: fix CQM for non-range use 2024-01-05 15:19:44 +01:00
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: remove support for static WEP 2023-01-18 17:31:44 +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 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: fix assoc response warning on failed links 2023-10-23 13:25:30 +02:00
nl80211.c wifi: nl80211: reject iftype change with mesh ID change 2024-03-06 14:48:40 +00:00
nl80211.h wifi: nl80211: Remove unused declaration nl80211_pmsr_dump_results() 2023-08-22 21:40:40 +02:00
ocb.c wifi: cfg80211: ocb: don't leave if not joined 2023-08-22 21:40:39 +02:00
of.c cfg80211: support ieee80211-freq-limit DT property 2017-01-06 14:01:13 +01:00
pmsr.c wifi: cfg80211: Annotate struct cfg80211_pmsr_request with __counted_by 2023-08-22 13:18:16 +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: add inform_bss op to update BSS 2023-06-19 12:05:28 +02:00
reg.c wifi: nl80211/reg: add no-EHT regulatory flag 2023-06-21 14:01:29 +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: fix RCU dereference in __cfg80211_bss_update 2024-02-05 20:14:34 +00:00
sme.c wifi: cfg80211/nl80211: Add support to indicate STA MLD setup links removal 2023-06-19 12:08:40 +02:00
sysfs.c wifi: cfg80211: add flush functions for wiphy work 2023-11-20 11:58:54 +01:00
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/nl80211: Add support to indicate STA MLD setup links removal 2023-06-19 12:08:40 +02:00
util.c wifi: cfg80211: fix receiving mesh packets without RFC1042 header 2023-07-12 18:03:40 -07:00
wext-compat.c wifi: cfg80211: remove support for static WEP 2023-01-18 17:31:44 +01:00
wext-compat.h wifi: cfg80211: Avoid clashing function prototypes 2022-11-16 11:31:47 +02:00
wext-core.c wifi: wext-core: Fix -Wstringop-overflow warning in ioctl_standard_iw_point() 2023-06-19 12:05:27 +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: wext: hold wiphy lock in siwgenie 2023-06-07 19:53:11 +02:00
wext-spy.c wireless: wext-spy: Fix out-of-bounds warning 2021-06-23 10:57:17 +02:00