CVE-2024-36976

Local service hang via inverted V4L2 locks

Published Jun 18, 2024 · Updated May 11, 2026

Deadlock in Linux kernel 6.9 through 6.9.1 allows local users to hang video-control operations through concurrent log-status requests. The log-status traversal in drivers/media/v4l2-core/v4l2-ctrls-core.c takes the hdl_vid_cap and hdl_user_vid handler locks in opposing orders across execution paths. Low-privileged local access to the affected V4L2 control path and overlapping execution are required; the supported consequence is an availability interruption, not data access or modification.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deadlock in Linux kernel 6.9 through 6.9.1 allows local users to hang video-control operations through concurrent log-status requests. The log-status traversal in drivers/media/v4l2-core/v4l2-ctrls-core.c takes the hdl_vid_cap and hdl_user_vid handler locks in opposing orders across execution paths. Low-privileged local access to the affected V4L2 control path and overlapping execution are required; the supported consequence is an availability interruption, not data access or modification.

The record

CVE
CVE-2024-36976
Published
Jun 18, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 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=6.9
  2. Affected versionversion=9801b5b28c6929139d6fceeee8d739cc67bb2739 <2e0ce54a9c5c7013b1257be044d99cbe7305e9f1
  3. Affected versionversion=9801b5b28c6929139d6fceeee8d739cc67bb2739 <eba63df7eb1f95df6bfb67722a35372b6994928d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.9; version=9801b5b28c6929139d6fceeee8d739cc67bb2739 <2e0ce54a9c5c7013b1257be044d99cbe7305e9f1; version=9801b5b28c6929139d6fceeee8d739cc67bb2739 <eba63df7eb1f95df6bfb67722a35372b6994928d

Published CVSS scores

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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