CVE-2023-53042

Display interruption via concurrent refresh-rate register writes

Published May 2, 2025 · Updated May 11, 2026

Display underflow in AMD Display Core in Linux allows local users to interrupt display output during a pipe commit. The DCN30 pipe-commit path writes dynamic refresh-rate registers such as OTG_V_TOTAL_MIN during the same frame as the commit, creating the underflow. Reachability requires local low-privilege access, an AMD GPU using the affected display path, and Linux 4.15 through 6.1.20, 6.2 through 6.2.7, 6.3-rc1, or 6.3-rc2.

CVSS severity5.5
Medium
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

Display underflow in AMD Display Core in Linux allows local users to interrupt display output during a pipe commit. The DCN30 pipe-commit path writes dynamic refresh-rate registers such as OTG_V_TOTAL_MIN during the same frame as the commit, creating the underflow. Reachability requires local low-privilege access, an AMD GPU using the affected display path, and Linux 4.15 through 6.1.20, 6.2 through 6.2.7, 6.3-rc1, or 6.3-rc2.

The record

CVE
CVE-2023-53042
Published
May 2, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 2, 2025CVE 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 <3c20a098b507020936e02a98f4fbb924deeef44b
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <56574f89dbd84004c3fd6485bcaafb5aa9b8be14
  4. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <f8080f1e300e7abcc03025ec8b5bab69ae98daaa

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <3c20a098b507020936e02a98f4fbb924deeef44b; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <56574f89dbd84004c3fd6485bcaafb5aa9b8be14; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <f8080f1e300e7abcc03025ec8b5bab69ae98daaa

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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