CVE-2024-56552

GPU execution instability via queue suspension race

Published Dec 27, 2024 · Updated Aug 5, 2026

Race condition in Linux 6.8 through 6.12.3 allows local users to disrupt GPU queue handling by racing queue suspension and closure. In xe_guc_sched_done_handler, closing a queue clears suspend_pending before the disable-scheduling response arrives, causing unintended deregistration and a later double unregister. Reachability requires low-privileged local access and an active Xe GuC submission path; observed consequences include assertion warnings and unexpected engine-state errors.

CVSS severity7.8
High
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

Race condition in Linux 6.8 through 6.12.3 allows local users to disrupt GPU queue handling by racing queue suspension and closure. In xe_guc_sched_done_handler, closing a queue clears suspend_pending before the disable-scheduling response arrives, causing unintended deregistration and a later double unregister. Reachability requires low-privileged local access and an active Xe GuC submission path; observed consequences include assertion warnings and unexpected engine-state errors.

The record

CVE
CVE-2024-56552
Published
Dec 27, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, CAPEC-26, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.8
  2. Affected versionversion=dd08ebf6c3525a7ea2186e636df064ea47281987 <5ddcb50b700221fa7d7be2adcb3d7d7afe8633dd
  3. Affected versionversion=dd08ebf6c3525a7ea2186e636df064ea47281987 <87651f31ae4e6e6e7e6c7270b9b469405e747407

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=dd08ebf6c3525a7ea2186e636df064ea47281987 <5ddcb50b700221fa7d7be2adcb3d7d7afe8633dd; version=dd08ebf6c3525a7ea2186e636df064ea47281987 <87651f31ae4e6e6e7e6c7270b9b469405e747407

Published CVSS scores

7.8Linux Kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.7NIST NVDCVSS:3.1/AV:L/AC:H/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

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CAPEC-26Leveraging Race Conditions
T1499.004Endpoint Denial of Service: Application 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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