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linux/net/mac80211
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Johannes Berg 8f033d2bec wifi: cfg80211/mac80211: reject bad MBSSID elements 
Per spec, the maximum value for the MaxBSSID ('n') indicator is 8,
and the minimum is 1 since a multiple BSSID set with just one BSSID
doesn't make sense (the # of BSSIDs is limited by 2^n).

Limit this in the parsing in both cfg80211 and mac80211, rejecting
any elements with an invalid value.

This fixes potentially bad shifts in the processing of these inside
the cfg80211_gen_new_bssid() function later.

I found this during the investigation of CVE-2022-41674 fixed by the
previous patch.

Fixes: 0b8fb8235be8 ("cfg80211: Parsing of Multiple BSSID information in scanning")
Fixes: 78ac51f81532 ("mac80211: support multi-bssid")
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-10-10 09:50:15 +02:00
..
aead_api.c
mac80211: Check crypto_aead_encrypt for errors
2021-03-16 21:20:41 +01:00
aead_api.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
aes_ccm.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
aes_cmac.c
mac80211: aes_cmac: check crypto_shash_setkey() return value
2021-04-19 12:01:40 +02:00
aes_cmac.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
aes_gcm.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
aes_gmac.c
mac80211: Check crypto_aead_encrypt for errors
2021-03-16 21:20:41 +01:00
aes_gmac.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
agg-rx.c
wifi: mac80211: fix multi-BSSID element parsing
2022-07-15 11:43:17 +02:00
agg-tx.c
wifi: mac80211: expand ieee80211_mgmt_tx() for MLO
2022-07-22 14:28:35 +02:00
airtime.c
wifi: mac80211: move some future per-link data to bss_conf
2022-06-20 12:55:01 +02:00
cfg.c
wifi: mac80211: prevent 4-addr use on MLDs
2022-09-03 16:57:34 +02:00
chan.c
wifi: mac80211: isolate driver from inactive links
2022-09-06 10:12:44 +02:00
debug.h
wifi: mac80211: debug: omit link if non-MLO connection
2022-07-15 11:43:14 +02:00
debugfs_key.c
wifi: mac80211: reorg some iface data structs for MLD
2022-06-20 12:55:06 +02:00
debugfs_key.h
mac80211: Support BIGTK configuration for Beacon protection
2020-02-24 10:35:57 +01:00
debugfs_netdev.c
wifi: mac80211: implement link switching
2022-09-06 10:17:20 +02:00
debugfs_netdev.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debugfs_sta.c
wifi: mac80211: make sta airtime deficit field s32 instead of s64
2022-07-01 10:51:48 +02:00
debugfs_sta.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debugfs.c
wifi: mac80211: optionally implement MLO multicast TX
2022-07-22 14:28:36 +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
driver-ops.c
wifi: mac80211: isolate driver from inactive links
2022-09-06 10:12:44 +02:00
driver-ops.h
wifi: mac80211: isolate driver from inactive links
2022-09-06 10:12:44 +02:00
eht.c
wifi: cfg80211/mac80211: check EHT capability size correctly
2022-08-25 10:41:24 +02:00
ethtool.c
wifi: mac80211: read ethtool's sta_stats from sinfo
2022-08-26 09:56:54 +02:00
fils_aead.c
mac80211: fils: use cfg80211_find_ext_elem()
2021-10-21 17:01:16 +02:00
fils_aead.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
he.c
wifi: mac80211: keep A-MSDU data in sta and per-link
2022-09-06 10:17:08 +02:00
ht.c
wifi: mac80211: keep A-MSDU data in sta and per-link
2022-09-06 10:17:08 +02:00
ibss.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-09-01 12:58:02 -07:00
ieee80211_i.h
wifi: mac80211: implement link switching
2022-09-06 10:17:20 +02:00
iface.c
wifi: mac80211: implement link switching
2022-09-06 10:17:20 +02:00
Kconfig
ath9k: fix build error with LEDS_CLASS=m
2021-01-28 09:29:34 +02:00
key.c
wifi: mac80211: implement link switching
2022-09-06 10:17:20 +02:00
key.h
wifi: mac80211: implement link switching
2022-09-06 10:17:20 +02:00
led.c
mac80211: don't open-code LED manipulations
2021-06-23 11:29:12 +02:00
led.h
mac80211: fix throughput LED trigger
2021-11-15 10:56:57 +01:00
link.c
wifi: mac80211: implement link switching
2022-09-06 10:17:20 +02:00
main.c
wifi: mac80211: Support POWERED_ADDR_CHANGE feature
2022-09-03 17:01:04 +02:00
Makefile
wifi: mac80211: move link code to a new file
2022-09-03 17:02:25 +02:00
mesh_hwmp.c
wifi: mac80211: fix multi-BSSID element parsing
2022-07-15 11:43:17 +02:00
mesh_pathtbl.c
mac80211: mesh: embedd mesh_paths and mpp_paths into ieee80211_if_mesh
2022-01-04 15:11:49 +01:00
mesh_plink.c
wifi: mac80211: fix up link station creation/insertion
2022-07-15 11:43:23 +02:00
mesh_ps.c
mac80211: mesh: fix potentially unaligned access
2021-09-23 13:25:09 +02:00
mesh_sync.c
mac80211: mesh: clean up rx_bcn_presp API
2021-09-23 16:26:33 +02:00
mesh.c
wifi: mac80211: correct SMPS mode in HE 6 GHz capability
2022-08-26 09:56:36 +02:00
mesh.h
mac80211: mesh: embedd mesh_paths and mpp_paths into ieee80211_if_mesh
2022-01-04 15:11:49 +01:00
michael.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
michael.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
mlme.c
wireless-next patches for v6.1
2022-09-30 10:07:31 -07:00
ocb.c
wifi: mac80211: fix up link station creation/insertion
2022-07-15 11:43:23 +02:00
offchannel.c
wifi: mac80211: expand ieee80211_mgmt_tx() for MLO
2022-07-22 14:28:35 +02:00
pm.c
mac80211: Prevent AP probing during suspend
2021-10-21 17:27:51 +02:00
rate.c
wifi: mac80211: make ieee80211_check_rate_mask() link-aware
2022-07-15 11:43:21 +02:00
rate.h
wifi: mac80211: make ieee80211_check_rate_mask() link-aware
2022-07-15 11:43:21 +02:00
rc80211_minstrel_ht_debugfs.c
mac80211: minstrel_ht: show sampling rates in debugfs
2021-02-12 08:58:11 +01:00
rc80211_minstrel_ht.c
wireless-next patches for v6.1
2022-09-30 10:07:31 -07:00
rc80211_minstrel_ht.h
mac80211: minstrel_ht: support ieee80211_rate_status
2022-05-16 10:07:58 +02:00
rx.c
wireless-next patches for v6.1
2022-09-30 10:07:31 -07:00
s1g.c
mac80211: prepare sta handling for MLO support
2022-04-11 16:42:03 +02:00
scan.c
drivers
2022-09-04 11:24:34 +01:00
spectmgmt.c
wifi: mac80211: separate out connection downgrade flags
2022-07-15 11:43:14 +02:00
sta_info.c
wifi: mac80211: keep A-MSDU data in sta and per-link
2022-09-06 10:17:08 +02:00
sta_info.h
wifi: mac80211: keep A-MSDU data in sta and per-link
2022-09-06 10:17:08 +02:00
status.c
wifi: mac80211: don't start TX with fq->lock to fix deadlock
2022-09-27 10:29:04 +02:00
tdls.c
wifi: mac80211: optionally implement MLO multicast TX
2022-07-22 14:28:36 +02:00
tkip.c
mac80211: Fix TKIP replay protection immediately after key setup
2020-01-15 09:52:12 +01:00
tkip.h
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-07-08 20:57:08 -07:00
trace_msg.h
mac80211: tracing: Use the new __vstring() helper
2022-07-24 19:11:17 -04:00
trace.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace.h
wifi: mac80211: remove link_id parameter from link_info_changed()
2022-07-15 11:43:20 +02:00
tx.c
wireless-next patches for v6.1
2022-09-30 10:07:31 -07:00
util.c
wifi: cfg80211/mac80211: reject bad MBSSID elements
2022-10-10 09:50:15 +02:00
vht.c
wifi: mac80211: keep A-MSDU data in sta and per-link
2022-09-06 10:17:08 +02:00
wep.c
mac80211: make ieee80211_wep_init() return void
2020-02-07 12:40:34 +01:00
wep.h
mac80211: make ieee80211_wep_init() return void
2020-02-07 12:40:34 +01:00
wme.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-07-14 15:27:35 -07:00
wme.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
wpa.c
wifi: use struct_group to copy addresses
2022-09-03 16:40:06 +02:00
wpa.h
wifi: mac80211: remove cipher scheme support
2022-06-10 15:35:53 +02:00