CVE-2024-56551

Service interruption via premature scheduler cleanup

Published Dec 27, 2024 · Updated Aug 5, 2026

Use-after-free in the AMDGPU driver in The Linux Kernel Organization's Linux allows local users to interrupt service during GPU teardown. The teardown path frees GPU scheduler state before destroying dependent entities and releases the VCE buffer before cleanup finishes, so drm_sched_entity_flush reads freed slab memory. Reaching the flaw requires local access and an AMD GPU teardown path; the demonstrated consequence is an invalid kernel-memory read and service interruption.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the AMDGPU driver in The Linux Kernel Organization's Linux allows local users to interrupt service during GPU teardown. The teardown path frees GPU scheduler state before destroying dependent entities and releases the VCE buffer before cleanup finishes, so drm_sched_entity_flush reads freed slab memory. Reaching the flaw requires local access and an AMD GPU teardown path; the demonstrated consequence is an invalid kernel-memory read and service interruption.

The record

CVE
CVE-2024-56551
Published
Dec 27, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499
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=4.2
  2. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <05b1b33936b71e5f189a813a517f72e8a27fcb2f
  3. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <3990ef742c064e22189b954522930db04fc6b1a7
  4. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <3cc1116de10953f0265a05d9f351b02a9ec3b497
  5. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <6383199ada42d30562b4249c393592a2a9c38165
  6. Affected versionversion=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <b61badd20b443eabe132314669bb51a263982e5c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.2; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <05b1b33936b71e5f189a813a517f72e8a27fcb2f; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <3990ef742c064e22189b954522930db04fc6b1a7; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <3cc1116de10953f0265a05d9f351b02a9ec3b497; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <6383199ada42d30562b4249c393592a2a9c38165; version=d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <b61badd20b443eabe132314669bb51a263982e5c

Published CVSS scores

7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 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-416Use After Free
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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