CVE-2024-56542

Service interruption via leaked DMUB bounding-box memory

Published Dec 27, 2024 · Updated May 23, 2026

A memory leak in the AMD display driver in Linux 6.11.2 through 6.11.10 and 6.12 through 6.12.1 allows local users to interrupt service. During a second amdgpu load after removal, dm_dmub_get_vbios_bounding_box returns after failed VBIOS DMUB communication without freeing its allocated GART bounding-box buffer. Reaching the leak requires local privileges sufficient to unload and reload amdgpu on affected AMD hardware; repeated failed initialization can exhaust memory and interrupt service.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A memory leak in the AMD display driver in Linux 6.11.2 through 6.11.10 and 6.12 through 6.12.1 allows local users to interrupt service. During a second amdgpu load after removal, dm_dmub_get_vbios_bounding_box returns after failed VBIOS DMUB communication without freeing its allocated GART bounding-box buffer. Reaching the leak requires local privileges sufficient to unload and reload amdgpu on affected AMD hardware; repeated failed initialization can exhaust memory and interrupt service.

The record

CVE
CVE-2024-56542
Published
Dec 27, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=43ebd0faec24652cb529ceefd594c61897059f90 <e51cbe40b77a32e8698ad8b9582e5b4fce6da364
  2. Affected versionversion=6.11.2 <6.11.11
  3. Affected versionversion=6.12
  4. Affected versionversion=f59549c7e705be0087d08bc116ccc767b86d8362 <5860c637513036a6ffc130950ea98676b591b47c
  5. Affected versionversion=f59549c7e705be0087d08bc116ccc767b86d8362 <d4f36e5fd800de7db74c1c4e62baf24a091a5ff6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=43ebd0faec24652cb529ceefd594c61897059f90 <e51cbe40b77a32e8698ad8b9582e5b4fce6da364; version=6.11.2 <6.11.11; version=6.12; version=f59549c7e705be0087d08bc116ccc767b86d8362 <5860c637513036a6ffc130950ea98676b591b47c; version=f59549c7e705be0087d08bc116ccc767b86d8362 <d4f36e5fd800de7db74c1c4e62baf24a091a5ff6

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS: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-401Missing Release of Memory after Effective Lifetime
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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