CVE-2026-53068

Out-of-bounds memory access via AFBC size overflow

Published Jun 24, 2026 · Updated Jun 24, 2026

Integer overflow in the Linux Kernel Komeda DRM driver allows local users to trigger out-of-bounds memory access through an AFBC framebuffer. The AFBC size check adds the payload size to the framebuffer offset without detecting wraparound, so an undersized drm_gem_object passes validation. Low-privileged local access to the Komeda display path is required; resulting kernel memory access can disclose data or interrupt the system.

CVSS severity7.1
High
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

Integer overflow in the Linux Kernel Komeda DRM driver allows local users to trigger out-of-bounds memory access through an AFBC framebuffer. The AFBC size check adds the payload size to the framebuffer offset without detecting wraparound, so an undersized drm_gem_object passes validation. Low-privileged local access to the Komeda display path is required; resulting kernel memory access can disclose data or interrupt the system.

The record

CVE
CVE-2026-53068
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-190
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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=5.3
  2. Affected versionversion=65ad2392dd6d1691db93e82b08d3311298b9d64a <02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583
  3. Affected versionversion=65ad2392dd6d1691db93e82b08d3311298b9d64a <779ec12c85c9e4547519e3903a371a3b26a289de
  4. Affected versionversion=65ad2392dd6d1691db93e82b08d3311298b9d64a <8165e8b28fdf392c2c7412518d602b4f193812a8
  5. Affected versionversion=65ad2392dd6d1691db93e82b08d3311298b9d64a <872d923b852705054bc099af663da862fdc1097d
  6. Affected versionversion=65ad2392dd6d1691db93e82b08d3311298b9d64a <a3a2a9bdc0f9c2d863a5a290cb2d4a565f7268e7
  7. Affected versionversion=65ad2392dd6d1691db93e82b08d3311298b9d64a <d8a541906860aa3519b1874780d933c766918a7c
  8. Affected versionversion=65ad2392dd6d1691db93e82b08d3311298b9d64a <e27b58095d7d3ac72f230e318838dee956258460
  9. Affected versionversion=65ad2392dd6d1691db93e82b08d3311298b9d64a <fe1f80f8f6e8611ac6349b9d464e8750443390cf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.3; version=65ad2392dd6d1691db93e82b08d3311298b9d64a <02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583; version=65ad2392dd6d1691db93e82b08d3311298b9d64a <779ec12c85c9e4547519e3903a371a3b26a289de; version=65ad2392dd6d1691db93e82b08d3311298b9d64a <8165e8b28fdf392c2c7412518d602b4f193812a8; version=65ad2392dd6d1691db93e82b08d3311298b9d64a <872d923b852705054bc099af663da862fdc1097d; version=65ad2392dd6d1691db93e82b08d3311298b9d64a <a3a2a9bdc0f9c2d863a5a290cb2d4a565f7268e7; version=65ad2392dd6d1691db93e82b08d3311298b9d64a <d8a541906860aa3519b1874780d933c766918a7c; version=65ad2392dd6d1691db93e82b08d3311298b9d64a <e27b58095d7d3ac72f230e318838dee956258460; version=65ad2392dd6d1691db93e82b08d3311298b9d64a <fe1f80f8f6e8611ac6349b9d464e8750443390cf

Published CVSS scores

7.1kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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-190Integer Overflow or Wraparound

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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