CVE-2026-53347

Kernel crash via uninitialized DRM atomic shutdown

Published Jul 1, 2026 · Updated Jul 1, 2026

Use of uninitialized data in the Linux Kernel allows local users to crash the kernel during virtio-gpu driver removal. When KMS is disabled, virtio_gpu_remove calls drm_atomic_helper_shutdown even though DRM atomic and modesetting state was never initialized. Reachability requires a KMS-disabled build and a driver removal or unbinding event; the reported consequence is a kernel crash with no data access or modification.

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

What happened

Use of uninitialized data in the Linux Kernel allows local users to crash the kernel during virtio-gpu driver removal. When KMS is disabled, virtio_gpu_remove calls drm_atomic_helper_shutdown even though DRM atomic and modesetting state was never initialized. Reachability requires a KMS-disabled build and a driver removal or unbinding event; the reported consequence is a kernel crash with no data access or modification.

The record

CVE
CVE-2026-53347
Published
Jul 1, 2026
Updated
Jul 1, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-908, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 1, 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=6.4
  2. Affected versionversion=72122c69d71784e390527819754ea456421c4501 <15e561869a8b4e4db69733be1d6f33770664f989
  3. Affected versionversion=72122c69d71784e390527819754ea456421c4501 <19a6a00ff50c284f3a9818882ad2be58b33b790a
  4. Affected versionversion=72122c69d71784e390527819754ea456421c4501 <38a5f891cda6d121c149c94cda89c31ec7024ee3
  5. Affected versionversion=72122c69d71784e390527819754ea456421c4501 <ed3e134700a2e07caa99b9bc0683ebbe0327c562
  6. Affected versionversion=72122c69d71784e390527819754ea456421c4501 <f329e8325e054bd6d84d10904f8dd51137281b92

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.4; version=72122c69d71784e390527819754ea456421c4501 <15e561869a8b4e4db69733be1d6f33770664f989; version=72122c69d71784e390527819754ea456421c4501 <19a6a00ff50c284f3a9818882ad2be58b33b790a; version=72122c69d71784e390527819754ea456421c4501 <38a5f891cda6d121c149c94cda89c31ec7024ee3; version=72122c69d71784e390527819754ea456421c4501 <ed3e134700a2e07caa99b9bc0683ebbe0327c562; version=72122c69d71784e390527819754ea456421c4501 <f329e8325e054bd6d84d10904f8dd51137281b92

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 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-908Use of Uninitialized Resource
T1499Endpoint Denial of Service

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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