CVE-2026-43229

Kernel panic via powered-down register access

Published May 6, 2026 · Updated May 6, 2026

A teardown-order flaw in the Linux Kernel wave5 VPU driver allows local users to cause a kernel panic during encoding. The removal path disables runtime power management before unregistering video devices, allowing wave5_vpu_irq_work_fn to read hardware registers after autosuspend powers down the VPU. Exploitation requires local low-privileged access, affected Wave5 hardware, polling-mode activity, and the teardown race; the reported consequence is a synchronous external abort and system crash.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A teardown-order flaw in the Linux Kernel wave5 VPU driver allows local users to cause a kernel panic during encoding. The removal path disables runtime power management before unregistering video devices, allowing wave5_vpu_irq_work_fn to read hardware registers after autosuspend powers down the VPU. Exploitation requires local low-privileged access, affected Wave5 hardware, polling-mode activity, and the teardown race; the reported consequence is a synchronous external abort and system crash.

The record

CVE
CVE-2026-43229
Published
May 6, 2026
Updated
May 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 6, 2026CVE publishedPublication date reported by the CVE source.
  2. May 6, 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=6.8
  2. Affected versionversion=9707a6254a8a6b978bde811a44fe07d86c229d1c <526816f2e331954d80fed8b37fa94efbbdde2b8d
  3. Affected versionversion=9707a6254a8a6b978bde811a44fe07d86c229d1c <b73d85231d5b1400a4fa5046cdac6c4d7cc6d969
  4. Affected versionversion=9707a6254a8a6b978bde811a44fe07d86c229d1c <b74cedac643b02aefa7da881b58a3792859d9748
  5. Affected versionversion=9707a6254a8a6b978bde811a44fe07d86c229d1c <dc2b7deae740a3ed138fb7ae17c97fa4055cfc5f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.8; version=9707a6254a8a6b978bde811a44fe07d86c229d1c <526816f2e331954d80fed8b37fa94efbbdde2b8d; version=9707a6254a8a6b978bde811a44fe07d86c229d1c <b73d85231d5b1400a4fa5046cdac6c4d7cc6d969; version=9707a6254a8a6b978bde811a44fe07d86c229d1c <b74cedac643b02aefa7da881b58a3792859d9748; version=9707a6254a8a6b978bde811a44fe07d86c229d1c <dc2b7deae740a3ed138fb7ae17c97fa4055cfc5f

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

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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

T1499Endpoint Denial of Service

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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