CVE-2022-49311

Local system hang via Wi-Fi driver deadlock

Published Feb 26, 2025 · Updated May 11, 2026

Improper locking in the staging Wi-Fi driver in Linux 4.12 through 5.18.4 allows local users to hang the system during network association. rtw_joinbss_event_prehandle holds pmlmepriv->lock while del_timer_sync waits for _rtw_join_timeout_handler, which needs the same lock. The condition requires the affected driver and a join-timeout race during association; the resulting deadlock blocks the handler indefinitely and affects availability only.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the staging Wi-Fi driver in Linux 4.12 through 5.18.4 allows local users to hang the system during network association. rtw_joinbss_event_prehandle holds pmlmepriv->lock while del_timer_sync waits for _rtw_join_timeout_handler, which needs the same lock. The condition requires the affected driver and a join-timeout race during association; the resulting deadlock blocks the handler indefinitely and affects availability only.

The record

CVE
CVE-2022-49311
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.12
  2. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <041879b12ddb0c6c83ed9c0bdd10dc82a056f2fc
  3. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <1f6c99b94ca3caad346876b3e22e3ca3d25bc8ee
  4. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ae60744d5fad840b9d056d35b4b652d95e755846
  5. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <eca9748d9267a38d532464e3305a38629e9c35a9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <041879b12ddb0c6c83ed9c0bdd10dc82a056f2fc; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <1f6c99b94ca3caad346876b3e22e3ca3d25bc8ee; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ae60744d5fad840b9d056d35b4b652d95e755846; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <eca9748d9267a38d532464e3305a38629e9c35a9

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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