CVE-2023-54261

System crash via missing gfx11 MQD callback

Published Dec 30, 2025 · Updated Dec 30, 2025

NULL pointer dereference in the Linux kernel 6.5 through 6.5.3 allows local users to crash the system through amdkfd debugfs. The gfx11 MQD manager leaves its mqd_stride callback unassigned, so the debugfs MQD path dereferences a NULL function pointer. Reachability requires gfx11 AMD graphics, the amdkfd driver, and access to the affected debugfs path; the bounded consequence is service interruption.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
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 the Linux kernel 6.5 through 6.5.3 allows local users to crash the system through amdkfd debugfs. The gfx11 MQD manager leaves its mqd_stride callback unassigned, so the debugfs MQD path dereferences a NULL function pointer. Reachability requires gfx11 AMD graphics, the amdkfd driver, and access to the affected debugfs path; the bounded consequence is service interruption.

The record

CVE
CVE-2023-54261
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <399b73d6b7720a9eae68a333193b53ed4f432fe5
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e9dca969b2426702a73719ab9207e43c6d80b581

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <399b73d6b7720a9eae68a333193b53ed4f432fe5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e9dca969b2426702a73719ab9207e43c6d80b581

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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