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CVE-2022-49022

wifi: mac8021: fix possible oob access in ieee80211_get_rate_duration

HIGH
7.8
CVSS Score
Published: October 21, 2024 at 08:06 PM UTC
Updated: August 5, 2026 at 09:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac8021: fix possible oob access in ieee80211_get_rate_duration Fix possible out-of-bound access in ieee80211_get_rate_duration routine as reported by the following UBSAN report: UBSAN: array-index-out-of-bounds in net/mac80211/airtime.c:455:47 index 15 is out of range for type 'u16 [12]' CPU: 2 PID: 217 Comm: kworker/u32:10 Not tainted 6.1.0-060100rc3-generic Hardware name: Acer Aspire TC-281/Aspire TC-281, BIOS R01-A2 07/18/2017 Workqueue: mt76 mt76u_tx_status_data [mt76_usb] Call Trace: <TASK> show_stack+0x4e/0x61 dump_stack_lvl+0x4a/0x6f dump_stack+0x10/0x18 ubsan_epilogue+0x9/0x43 __ubsan_handle_out_of_bounds.cold+0x42/0x47 ieee80211_get_rate_duration.constprop.0+0x22f/0x2a0 [mac80211] ? ieee80211_tx_status_ext+0x32e/0x640 [mac80211] ieee80211_calc_rx_airtime+0xda/0x120 [mac80211] ieee80211_calc_tx_airtime+0xb4/0x100 [mac80211] mt76x02_send_tx_status+0x266/0x480 [mt76x02_lib] mt76x02_tx_status_data+0x52/0x80 [mt76x02_lib] mt76u_tx_status_data+0x67/0xd0 [mt76_usb] process_one_work+0x225/0x400 worker_thread+0x50/0x3e0 ? process_one_work+0x400/0x400 kthread+0xe9/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x22/0x30

Affected

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

Linux Kernel· Linux
95%
5.11 ≤ v < 5.15.825.16 ≤ v < 6.0.125.5 ≤ v < 5.10.1585.5 ≤ v < 5.15.825.5 ≤ v < 6.0.125.5 ≤ v < 6.16.1 rc16.1 rc26.1 rc36.1 rc46.1 rc56.1 rc66.1 rc7db3e1c40cf2f973fbdd52ae0b59a9472b1c04f4a
Vendor states this is fixed in 0184ede0ec61b9cd075babfaa45081b1bf322234 (fixed)
Vendor states this is fixed in 3e8f7abcc3473bc9603323803aeaed4ffcc3a2ab (fixed)
Vendor states this is fixed in 59b54f0563b6546c94bdb6823d3b382c75407019 (fixed)
Vendor states this is fixed in f0fcad4c7201ecfaa17357f4ce0c50b4708df22d (fixed)
Vendor states this is fixed in 5.10.158 (unaffected)
Vendor states this is fixed in 5.15.82 (unaffected)
Vendor states this is fixed in 5.5 (unaffected)
Vendor states this is fixed in 6.0.12 (unaffected)
Vendor states this is fixed in 6.1 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/0184ede0ec61b9cd075babfaa45081b1bf322234
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/3e8f7abcc3473bc9603323803aeaed4ffcc3a2ab
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/59b54f0563b6546c94bdb6823d3b382c75407019
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f0fcad4c7201ecfaa17357f4ce0c50b4708df22d

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-129

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