CVE-2024-26833

Local service interruption via unreleased dmub_srv allocation

Published Apr 17, 2024 · Updated May 11, 2026

Memory leak in affected Linux kernel versions allows local users to interrupt service through repeated AMDGPU driver initialization. In dm_sw_fini(), the AMD display driver destroys dmub_srv but fails to free its 1,024-byte allocation, leaving memory unreachable after device teardown. Exploitation requires local low-privilege access and applicable AMD display hardware; repeated initialization exhausts kernel memory and makes the system unavailable.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in affected Linux kernel versions allows local users to interrupt service through repeated AMDGPU driver initialization. In dm_sw_fini(), the AMD display driver destroys dmub_srv but fails to free its 1,024-byte allocation, leaving memory unreachable after device teardown. Exploitation requires local low-privilege access and applicable AMD display hardware; repeated initialization exhausts kernel memory and makes the system unavailable.

The record

CVE
CVE-2024-26833
Published
Apr 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.6
  2. Affected versionversion=743b9786b14ae0d7d13b3782dccad158e577e9bb <10c6b90e975358c17856a578419dc449887899c2
  3. Affected versionversion=743b9786b14ae0d7d13b3782dccad158e577e9bb <33f649f1b1cea39ed360e6c12bba4fac83118e6e
  4. Affected versionversion=743b9786b14ae0d7d13b3782dccad158e577e9bb <541e79265ea7e339a7c4a462feafe9f8f996e04b
  5. Affected versionversion=743b9786b14ae0d7d13b3782dccad158e577e9bb <58168005337eabef345a872be3f87d0215ff3b30
  6. Affected versionversion=743b9786b14ae0d7d13b3782dccad158e577e9bb <b49b022f7dfce85eb77d0d987008fde5c01d7857
  7. Affected versionversion=743b9786b14ae0d7d13b3782dccad158e577e9bb <bae67893578d608e35691dcdfa90c4957debf1d3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.6; version=743b9786b14ae0d7d13b3782dccad158e577e9bb <10c6b90e975358c17856a578419dc449887899c2; version=743b9786b14ae0d7d13b3782dccad158e577e9bb <33f649f1b1cea39ed360e6c12bba4fac83118e6e; version=743b9786b14ae0d7d13b3782dccad158e577e9bb <541e79265ea7e339a7c4a462feafe9f8f996e04b; version=743b9786b14ae0d7d13b3782dccad158e577e9bb <58168005337eabef345a872be3f87d0215ff3b30; version=743b9786b14ae0d7d13b3782dccad158e577e9bb <b49b022f7dfce85eb77d0d987008fde5c01d7857; version=743b9786b14ae0d7d13b3782dccad158e577e9bb <bae67893578d608e35691dcdfa90c4957debf1d3

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 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-401Missing Release of Memory after Effective Lifetime
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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