CVE-2026-43293

Kernel warning via timer-worker cleanup race

Published May 8, 2026 · Updated May 8, 2026

Race condition in the Linux Kernel Wave5 driver allows local users to trigger a kernel warning when unloading the module in polling mode. The wave5_vpu_remove function destroys its kthread worker before canceling the hrtimer, allowing the timer callback to queue work while worker destruction is in progress. Reachability requires the driver to use polling mode and module removal to occur; published evidence reports a warning rather than a kernel crash or data impact.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux Kernel Wave5 driver allows local users to trigger a kernel warning when unloading the module in polling mode. The wave5_vpu_remove function destroys its kthread worker before canceling the hrtimer, allowing the timer callback to queue work while worker destruction is in progress. Reachability requires the driver to use polling mode and module removal to occur; published evidence reports a warning rather than a kernel crash or data impact.

The record

CVE
CVE-2026-43293
Published
May 8, 2026
Updated
May 8, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 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=6.10
  2. Affected versionversion=ed7276ed2fd02208bfca9f222ef1e7b2743d710d <0c2e752688a0ee3b89993e6de6c496d863870c93
  3. Affected versionversion=ed7276ed2fd02208bfca9f222ef1e7b2743d710d <156020e889edf4593870d926d3c4a6d06baac44a
  4. Affected versionversion=ed7276ed2fd02208bfca9f222ef1e7b2743d710d <5a0c122e834b2f7f029526422c71be922960bf03
  5. Affected versionversion=ed7276ed2fd02208bfca9f222ef1e7b2743d710d <cc8071b1bac6568ea09d54be2d4f74dba80e17f8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.10; version=ed7276ed2fd02208bfca9f222ef1e7b2743d710d <0c2e752688a0ee3b89993e6de6c496d863870c93; version=ed7276ed2fd02208bfca9f222ef1e7b2743d710d <156020e889edf4593870d926d3c4a6d06baac44a; version=ed7276ed2fd02208bfca9f222ef1e7b2743d710d <5a0c122e834b2f7f029526422c71be922960bf03; version=ed7276ed2fd02208bfca9f222ef1e7b2743d710d <cc8071b1bac6568ea09d54be2d4f74dba80e17f8

Published CVSS scores

5.5NIST NVDCVSS: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

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

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
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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