CVE-2022-50634

Kernel fault via unchecked workqueue allocation

Published Dec 9, 2025 · Updated May 11, 2026

NULL-pointer dereference in the Linux kernel cw2015 battery driver allows attackers to trigger a kernel fault during device probing. cw_bat_probe() passes a NULL result from create_singlethread_workqueue() through queue_delayed_work() until __queue_work() dereferences wq->flags. Triggering the fault requires a cw2015 device probe and workqueue-allocation failure; public sources do not establish attacker control of either condition.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL-pointer dereference in the Linux kernel cw2015 battery driver allows attackers to trigger a kernel fault during device probing. cw_bat_probe() passes a NULL result from create_singlethread_workqueue() through queue_delayed_work() until __queue_work() dereferences wq->flags. Triggering the fault requires a cw2015 device probe and workqueue-allocation failure; public sources do not establish attacker control of either condition.

The record

CVE
CVE-2022-50634
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 9, 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=5.8
  2. Affected versionversion=b4c7715c10c106a041b0b3fabd26151c214ea394 <5150b76aa2eb8bb8feb7f7a048417f9d39c3dd04
  3. Affected versionversion=b4c7715c10c106a041b0b3fabd26151c214ea394 <97f2b4ddb0aa700d673691a7d5e44d226d22bab7
  4. Affected versionversion=b4c7715c10c106a041b0b3fabd26151c214ea394 <f7e2ba8ed08138102f21f3fe6414498c93177fd8

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=b4c7715c10c106a041b0b3fabd26151c214ea394 <5150b76aa2eb8bb8feb7f7a048417f9d39c3dd04; version=b4c7715c10c106a041b0b3fabd26151c214ea394 <97f2b4ddb0aa700d673691a7d5e44d226d22bab7; version=b4c7715c10c106a041b0b3fabd26151c214ea394 <f7e2ba8ed08138102f21f3fe6414498c93177fd8

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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