CVE-2025-21688

Local system crash via V3D job-pointer race

Published Feb 10, 2025 · Updated May 23, 2026

Race condition in the Linux kernel V3D DRM driver allows local users to crash affected systems during concurrent GPU job completion. The IRQ thread clears the shared job pointer after signaling its fence while run_job() can concurrently store a new job, causing v3d_irq() to dereference NULL. The condition requires an affected kernel, an active V3D GPU driver, and a job-completion race; published affected releases include 5.15.177, 6.1.127, 6.6.74, 6.12.11, and 6.13.

CVSS severity4.7
Medium
EPSS probability0.18%
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 V3D DRM driver allows local users to crash affected systems during concurrent GPU job completion. The IRQ thread clears the shared job pointer after signaling its fence while run_job() can concurrently store a new job, causing v3d_irq() to dereference NULL. The condition requires an affected kernel, an active V3D GPU driver, and a job-completion race; published affected releases include 5.15.177, 6.1.127, 6.6.74, 6.12.11, and 6.13.

The record

CVE
CVE-2025-21688
Published
Feb 10, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 10, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=14e0a874488e79086340ba8e2d238cb9596b68a8 <6cfafcad46e95351c477da0ae7e3acb8f7550ada
  2. Affected versionversion=1bd6303d08c85072ce40ac01a767ab67195105bd <9793206fbf5293534c3a79d78f196e2cbb48c22d
  3. Affected versionversion=2a1c88f7ca5c12dff6fa6787492ac910bb9e4407 <a9401cd5d1bb5a0b8d2bef09623ca43551cd6e8a
  4. Affected versionversion=5.15.177 <5.15.178
  5. Affected versionversion=6.1.127 <6.1.128
  6. Affected versionversion=6.12.11 <6.12.12
  7. Affected versionversion=6.13
  8. Affected versionversion=63195bae1cbf78f1d392b1bc9ae4b03c82d0ebf3 <431fb709db434565b5e7cee82a11bd681a794fd3
  9. Affected versionversion=6.6.74 <6.6.75
  10. Affected versionversion=a34050f70e7955a359874dff1a912a748724a140 <1f66a3a1a516e4d545906916b3f3c8d1c5e909e6
  11. Affected versionversion=b22467b1ae104073dcb11aa78562a331cd7fb0e0 <01a7e3a43ee2e6607169a75889412344c10b37fd
  12. Affected versionversion=e4b5ccd392b92300a2b341705cc4805681094e49 <3059e7aaa280daea57bb069fbc65225e1bb95014
  13. Affected versionversion=e4b5ccd392b92300a2b341705cc4805681094e49 <6e64d6b3a3c39655de56682ec83e894978d23412

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=14e0a874488e79086340ba8e2d238cb9596b68a8 <6cfafcad46e95351c477da0ae7e3acb8f7550ada; version=1bd6303d08c85072ce40ac01a767ab67195105bd <9793206fbf5293534c3a79d78f196e2cbb48c22d; version=2a1c88f7ca5c12dff6fa6787492ac910bb9e4407 <a9401cd5d1bb5a0b8d2bef09623ca43551cd6e8a; version=5.15.177 <5.15.178; version=6.1.127 <6.1.128; version=6.12.11 <6.12.12; version=6.13; version=63195bae1cbf78f1d392b1bc9ae4b03c82d0ebf3 <431fb709db434565b5e7cee82a11bd681a794fd3; version=6.6.74 <6.6.75; version=a34050f70e7955a359874dff1a912a748724a140 <1f66a3a1a516e4d545906916b3f3c8d1c5e909e6; version=b22467b1ae104073dcb11aa78562a331cd7fb0e0 <01a7e3a43ee2e6607169a75889412344c10b37fd; version=e4b5ccd392b92300a2b341705cc4805681094e49 <3059e7aaa280daea57bb069fbc65225e1bb95014; version=e4b5ccd392b92300a2b341705cc4805681094e49 <6e64d6b3a3c39655de56682ec83e894978d23412

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7CISA-ADPCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Amazon LinuxCVSS: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

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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