CVE-2023-52625

System hang via recursive DMCUB idle exit

Published Mar 26, 2024 · Updated May 11, 2026

Availability flaw in the AMD Display Core DMCUB interface allows local users to hang affected systems during command submission. The idle-exit path invokes a DMCUB command before recording software idle state, recursively reentering the same path when DMCUB is unpowered. Exploitation requires local low-privileged access and affected AMD display hardware; the bounded consequence is a system hang.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Availability flaw in the AMD Display Core DMCUB interface allows local users to hang affected systems during command submission. The idle-exit path invokes a DMCUB command before recording software idle state, recursively reentering the same path when DMCUB is unpowered. Exploitation requires local low-privileged access and affected AMD display hardware; the bounded consequence is a system hang.

The record

CVE
CVE-2023-52625
Published
Mar 26, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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 <820c3870c491946a78950cdf961bf40e28c1025f
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <8e57c06bf4b0f51a4d6958e15e1a99c9520d00fa

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <820c3870c491946a78950cdf961bf40e28c1025f; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <8e57c06bf4b0f51a4d6958e15e1a99c9520d00fa

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CanonicalCVSS: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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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