CVE-2024-35952

Host soft lockup via unbounded DPMCU status wait

Published May 20, 2024 · Updated May 11, 2026

Denial of service in affected Linux kernel releases allows local users to soft-lock the host through the AST DRM display path. In ast_dp_set_on_off(), a while-loop waits without a timeout for a VGACRI-Dx scratch register that the DPMCU cannot update while the SCU lock remains set. Reachability requires an AST DisplayPort device and the locked SCU state; the unbounded wait stalls the host without disclosing or modifying data.

CVSS severity5.5
Medium
EPSS probability0.17%
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 affected Linux kernel releases allows local users to soft-lock the host through the AST DRM display path. In ast_dp_set_on_off(), a while-loop waits without a timeout for a VGACRI-Dx scratch register that the DPMCU cannot update while the SCU lock remains set. Reachability requires an AST DisplayPort device and the locked SCU state; the unbounded wait stalls the host without disclosing or modifying data.

The record

CVE
CVE-2024-35952
Published
May 20, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 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=5.19
  2. Affected versionversion=594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 <35768baf0fdfc47ede42d899506bad78450e9294
  3. Affected versionversion=594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 <8a6fea3fcb577a543ef67683ca7105bde49a38fb
  4. Affected versionversion=594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 <a81b2acd43e24e419f65df97348c76a5a1496066
  5. Affected versionversion=594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 <bc004f5038220b1891ef4107134ccae44be55109

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 <35768baf0fdfc47ede42d899506bad78450e9294; version=594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 <8a6fea3fcb577a543ef67683ca7105bde49a38fb; version=594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 <a81b2acd43e24e419f65df97348c76a5a1496066; version=594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 <bc004f5038220b1891ef4107134ccae44be55109

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

CWE-667Improper Locking
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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