CVE-2022-50164

wifi: iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue

HIGH

7.8

CVSS Score

Published: June 18, 2025 at 11:03 AM UTC

Updated: August 5, 2026 at 09:24 AM UTC

1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue After successfull station association, if station queues are disabled for some reason, the related lists are not emptied. So if some new element is added to the list in iwl_mvm_mac_wake_tx_queue, it can match with the old one and produce a BUG like this: [ 46.535263] list_add corruption. prev->next should be next (ffff94c1c318a360), but was 0000000000000000. (prev=ffff94c1d02d3388). [ 46.535283] ------------[ cut here ]------------ [ 46.535284] kernel BUG at lib/list_debug.c:26! [ 46.535290] invalid opcode: 0000 [#1] PREEMPT SMP PTI [ 46.585304] CPU: 0 PID: 623 Comm: wpa_supplicant Not tainted 5.19.0-rc3+ #1 [ 46.592380] Hardware name: Dell Inc. Inspiron 660s/0478VN , BIOS A07 08/24/2012 [ 46.600336] RIP: 0010:__list_add_valid.cold+0x3d/0x3f [ 46.605475] Code: f2 4c 89 c1 48 89 fe 48 c7 c7 c8 40 67 93 e8 20 cc fd ff 0f 0b 48 89 d1 4c 89 c6 4c 89 ca 48 c7 c7 70 40 67 93 e8 09 cc fd ff <0f> 0b 48 89 fe 48 c7 c7 00 41 67 93 e8 f8 cb fd ff 0f 0b 48 89 d1 [ 46.624469] RSP: 0018:ffffb20800ab76d8 EFLAGS: 00010286 [ 46.629854] RAX: 0000000000000075 RBX: ffff94c1c318a0e0 RCX: 0000000000000000 [ 46.637105] RDX: 0000000000000201 RSI: ffffffff9365e100 RDI: 00000000ffffffff [ 46.644356] RBP: ffff94c1c5f43370 R08: 0000000000000075 R09: 3064316334396666 [ 46.651607] R10: 3364323064316334 R11: 39666666663d7665 R12: ffff94c1c5f43388 [ 46.658857] R13: ffff94c1d02d3388 R14: ffff94c1c318a360 R15: ffff94c1cf2289c0 [ 46.666108] FS: 00007f65634ff7c0(0000) GS:ffff94c1da200000(0000) knlGS:0000000000000000 [ 46.674331] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.680170] CR2: 00007f7dfe984460 CR3: 000000010e894003 CR4: 00000000000606f0 [ 46.687422] Call Trace: [ 46.689906] <TASK> [ 46.691950] iwl_mvm_mac_wake_tx_queue+0xec/0x15c [iwlmvm] [ 46.697601] ieee80211_queue_skb+0x4b3/0x720 [mac80211] [ 46.702973] ? sta_info_get+0x46/0x60 [mac80211] [ 46.707703] ieee80211_tx+0xad/0x110 [mac80211] [ 46.712355] __ieee80211_tx_skb_tid_band+0x71/0x90 [mac80211] ... In order to avoid this problem, we must also remove the related lists when station queues are disabled.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.1 ≤ v < 5.10.1375.1 ≤ v < 5.15.615.1 ≤ v < 5.18.185.1 ≤ v < 5.19.25.1 ≤ v < 5.4.2115.1 ≤ v < 6.05.11 ≤ v < 5.15.615.16 ≤ v < 5.18.185.19 ≤ v < 5.19.25.5 ≤ v < 5.10.1375.1cfbc6c4c5b91c7725ef14465b98ac347d31f2334

Vendor states this is fixed in 14a3aacf517a9de725dd3219dbbcf741e31763c4 (fixed)

Vendor states this is fixed in 182d3c1385f44ba7c508bf5b1292a7fe96ad4e9e (fixed)

Vendor states this is fixed in 38d71acc15a2e72806b516380af0adb3830d4639 (fixed)

Vendor states this is fixed in 4a40af2b0b9517fca7ae2a030c9c0a16836303c0 (fixed)

Vendor states this is fixed in 5cca5f714fe6cedd2df9d8451ad8df21e6464f62 (fixed)

Vendor states this is fixed in ff068c25bf90d26f0aee1751553f18076b797e8d (fixed)

Vendor states this is fixed in 5.1 (unaffected)

Vendor states this is fixed in 5.10.137 (unaffected)

Vendor states this is fixed in 5.15.61 (unaffected)

Vendor states this is fixed in 5.18.18 (unaffected)

Vendor states this is fixed in 5.19.2 (unaffected)

Vendor states this is fixed in 5.4.211 (unaffected)