CVE-2024-40976

Service interruption via Lima timeout race

Published Jul 12, 2024 · Updated May 11, 2026

A race condition in the Lima DRM scheduler in affected Linux kernels starting with 5.2 allows local users to interrupt service via a timed rendering job. The timeout handler leaves interrupts enabled before a hard reset, allowing a late job-completion IRQ to call lima_sched_pipe_task_done concurrently and unbalance lima_pm_idle references. Local access to Lima GPU rendering is required; the documented result is a kernel warning and stack dump, with no reported data disclosure or modification.

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

A race condition in the Lima DRM scheduler in affected Linux kernels starting with 5.2 allows local users to interrupt service via a timed rendering job. The timeout handler leaves interrupts enabled before a hard reset, allowing a late job-completion IRQ to call lima_sched_pipe_task_done concurrently and unbalance lima_pm_idle references. Local access to Lima GPU rendering is required; the documented result is a kernel warning and stack dump, with no reported data disclosure or modification.

The record

CVE
CVE-2024-40976
Published
Jul 12, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 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=5.2
  2. Affected versionversion=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a
  3. Affected versionversion=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db
  4. Affected versionversion=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a
  5. Affected versionversion=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344
  6. Affected versionversion=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <a421cc7a6a001b70415aa4f66024fa6178885a14
  7. Affected versionversion=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <bdbc4ca77f5eaac15de7230814253cddfed273b1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a; version=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db; version=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a; version=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344; version=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <a421cc7a6a001b70415aa4f66024fa6178885a14; version=a1d2a6339961efc078208dc3b2f006e9e9a8e119 <bdbc4ca77f5eaac15de7230814253cddfed273b1

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 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

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application or System Exploitation

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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