CVE-2023-52671

Display hang via stale OPP assignment

Published May 17, 2024 · Updated May 11, 2026

Availability flaw in Linux before 6.6.24, 6.7.3, or 6.8 allows local users to hang AMD displays during ODM4:1 transitions. When an OPTC is disabled, the dcn32/dcn35 code fails to disconnect every OPP before reclaiming those OPPs for a different OPTC, causing an underflow or hang. Reachability requires local low-privileged access and an affected AMD display configuration that performs the ODM4:1 transition; the bounded impact is a display or service hang.

CVSS severity5.5
Medium
EPSS probability0.22%
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 Linux before 6.6.24, 6.7.3, or 6.8 allows local users to hang AMD displays during ODM4:1 transitions. When an OPTC is disabled, the dcn32/dcn35 code fails to disconnect every OPP before reclaiming those OPPs for a different OPTC, causing an underflow or hang. Reachability requires local low-privileged access and an affected AMD display configuration that performs the ODM4:1 transition; the bounded impact is a display or service hang.

The record

CVE
CVE-2023-52671
Published
May 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 17, 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 <4b6b479b2da6badff099b2e3abf0248936eefbf5
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <ae62f1dde66a6f0eee98defc4c7a346bd5acd239
  4. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <e7b2b108cdeab76a7e7324459e50b0c1214c0386

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <4b6b479b2da6badff099b2e3abf0248936eefbf5; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <ae62f1dde66a6f0eee98defc4c7a346bd5acd239; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <e7b2b108cdeab76a7e7324459e50b0c1214c0386

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

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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