CVE-2023-52624

System hang via sleeping DMCUB GPINT access

Published Mar 26, 2024 · Updated May 11, 2026

Denial of service in the Linux kernel 4.15 through 6.7.2 allows local users to hang systems through AMD display GPINT mailbox access. The drm/amd/display code submits GPINT commands while the Display Microcontroller Unit can be idle, without first waking it, so the hardware mailbox exchange stalls the system. Reachability requires affected AMD display hardware and a path that executes a GPINT command; the documented consequence is a system hang.

CVSS severity7.8
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel 4.15 through 6.7.2 allows local users to hang systems through AMD display GPINT mailbox access. The drm/amd/display code submits GPINT commands while the Display Microcontroller Unit can be idle, without first waking it, so the hardware mailbox exchange stalls the system. Reachability requires affected AMD display hardware and a path that executes a GPINT command; the documented consequence is a system hang.

The record

CVE
CVE-2023-52624
Published
Mar 26, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-77, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 26, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=4.15
  2. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <2ef98c6d753a744e333b7e34b9cf687040fba57d
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <e5ffd1263dd5b44929c676171802e7b6af483f21

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <2ef98c6d753a744e333b7e34b9cf687040fba57d; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <e5ffd1263dd5b44929c676171802e7b6af483f21

Published CVSS scores

7.8Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.4Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
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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