CVE-2026-53213

Local denial of service via failed shader reallocation

Published Jun 25, 2026 · Updated Jun 25, 2026

Memory leak in the Linux kernel's VC4 shader validator allows local users to exhaust kernel memory during shader validation. In drivers/gpu/drm/vc4/vc4_validate_shaders.c, a failed krealloc() overwrites the only pointer to the still-allocated block, leaving it unreclaimable. Access to a system using the VC4 DRM driver is required; repeated allocation failures can interrupt service by consuming kernel memory.

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

Memory leak in the Linux kernel's VC4 shader validator allows local users to exhaust kernel memory during shader validation. In drivers/gpu/drm/vc4/vc4_validate_shaders.c, a failed krealloc() overwrites the only pointer to the still-allocated block, leaving it unreclaimable. Access to a system using the VC4 DRM driver is required; repeated allocation failures can interrupt service by consuming kernel memory.

The record

CVE
CVE-2026-53213
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 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=4.8
  2. Affected versionversion=6d45c81d229d71da54d374143e7d6abad4c0cf31 <02f5e4db57c0cdd7bac89d503b301a093a0fa95c
  3. Affected versionversion=6d45c81d229d71da54d374143e7d6abad4c0cf31 <30165a09f76eaf34951c818eb5d9d6e4771d76f6
  4. Affected versionversion=6d45c81d229d71da54d374143e7d6abad4c0cf31 <4fc692dc6df5bc777cc1bcebf95179e28594875f
  5. Affected versionversion=6d45c81d229d71da54d374143e7d6abad4c0cf31 <5d563a5da8717629ae72f9eadf1e0e340bd1658b
  6. Affected versionversion=6d45c81d229d71da54d374143e7d6abad4c0cf31 <c034aa0b1ba5f49cbdf8ef193d6ec714d74aac27
  7. Affected versionversion=6d45c81d229d71da54d374143e7d6abad4c0cf31 <e0ce103e89d61eef70edc1d1ae3bfd4c0aacbc2e
  8. Affected versionversion=6d45c81d229d71da54d374143e7d6abad4c0cf31 <fd87d6966041e33ef7d2e5dc59f9a52b71c6ae5f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.8; version=6d45c81d229d71da54d374143e7d6abad4c0cf31 <02f5e4db57c0cdd7bac89d503b301a093a0fa95c; version=6d45c81d229d71da54d374143e7d6abad4c0cf31 <30165a09f76eaf34951c818eb5d9d6e4771d76f6; version=6d45c81d229d71da54d374143e7d6abad4c0cf31 <4fc692dc6df5bc777cc1bcebf95179e28594875f; version=6d45c81d229d71da54d374143e7d6abad4c0cf31 <5d563a5da8717629ae72f9eadf1e0e340bd1658b; version=6d45c81d229d71da54d374143e7d6abad4c0cf31 <c034aa0b1ba5f49cbdf8ef193d6ec714d74aac27; version=6d45c81d229d71da54d374143e7d6abad4c0cf31 <e0ce103e89d61eef70edc1d1ae3bfd4c0aacbc2e; version=6d45c81d229d71da54d374143e7d6abad4c0cf31 <fd87d6966041e33ef7d2e5dc59f9a52b71c6ae5f

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

CWE-401Missing Release of Memory after Effective Lifetime
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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