CVE-2026-53135

Kernel crash via null CRTC state dereference

Published Jun 25, 2026 · Updated Jun 25, 2026

NULL pointer dereference in affected Linux Kernel branches starting with 5.2 allows local users to crash the kernel through SDP debugfs. The dp_sdp_message_debugfs_write() function dereferences an unchecked CRTC pointer and requests 36 bytes regardless of the supplied write size. Exploitation requires AMD display support, write access to sdp_message, and a connected display with no bound CRTC, such as after hot-plug.

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

NULL pointer dereference in affected Linux Kernel branches starting with 5.2 allows local users to crash the kernel through SDP debugfs. The dp_sdp_message_debugfs_write() function dereferences an unchecked CRTC pointer and requests 36 bytes regardless of the supplied write size. Exploitation requires AMD display support, write access to sdp_message, and a connected display with no bound CRTC, such as after hot-plug.

The record

CVE
CVE-2026-53135
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
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=5.2
  2. Affected versionversion=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <7ae95c0275c330b5dbae806f8e431720edad776f
  3. Affected versionversion=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <7fc4fab4acc307ad2903312c195872b2953d32c3
  4. Affected versionversion=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <a2de1d71891a038a9346b2c1a72b88c8350f2479
  5. Affected versionversion=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <adf67034b1f61f7119295208085bfd43f85f56af
  6. Affected versionversion=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <b781f90a9528555c709e59789550893581ef0be4
  7. Affected versionversion=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <bb6f705b73b5f191f14ad004e2c8c4b615806187
  8. Affected versionversion=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <c90954cdea4d6998ec345de0d840d030c145b89e
  9. Affected versionversion=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <ee9cfcf77a8e8af637396dc00966df5f701e661c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.2; version=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <7ae95c0275c330b5dbae806f8e431720edad776f; version=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <7fc4fab4acc307ad2903312c195872b2953d32c3; version=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <a2de1d71891a038a9346b2c1a72b88c8350f2479; version=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <adf67034b1f61f7119295208085bfd43f85f56af; version=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <b781f90a9528555c709e59789550893581ef0be4; version=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <bb6f705b73b5f191f14ad004e2c8c4b615806187; version=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <c90954cdea4d6998ec345de0d840d030c145b89e; version=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <ee9cfcf77a8e8af637396dc00966df5f701e661c

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-476NULL Pointer Dereference
T1499.004Application 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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