CVE-2026-23033

Availability degradation via leaked DMA pool resources

Published Jan 31, 2026 · Updated Jan 31, 2026

Resource leak in affected Linux Kernel stable branches allows local users to degrade availability through OMAP DMA probe failures. The omap-dma probe allocates a dma_pool but does not destroy it when either DMA controller registration operation returns an error. Exploitation requires local low-privileged access; the disclosed consequence is limited to reduced availability from unreleased kernel resources.

CVSS severity4.8
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

Resource leak in affected Linux Kernel stable branches allows local users to degrade availability through OMAP DMA probe failures. The omap-dma probe allocates a dma_pool but does not destroy it when either DMA controller registration operation returns an error. Exploitation requires local low-privileged access; the disclosed consequence is limited to reduced availability from unreleased kernel resources.

The record

CVE
CVE-2026-23033
Published
Jan 31, 2026
Updated
Jan 31, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 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=3.6
  2. Affected versionversion=7bedaa5537604f34d1d63c5ec7891e559d2a61ed <2e1136acf8a8887c29f52e35a77b537309af321f
  3. Affected versionversion=7bedaa5537604f34d1d63c5ec7891e559d2a61ed <4b93712e96be17029bd22787f2e39feb0e73272c
  4. Affected versionversion=7bedaa5537604f34d1d63c5ec7891e559d2a61ed <829b00481734dd54e72f755fd6584bce6fbffbb0
  5. Affected versionversion=7bedaa5537604f34d1d63c5ec7891e559d2a61ed <88a9483f093bbb9263dcf21bc7fdb5132e5de88d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.6; version=7bedaa5537604f34d1d63c5ec7891e559d2a61ed <2e1136acf8a8887c29f52e35a77b537309af321f; version=7bedaa5537604f34d1d63c5ec7891e559d2a61ed <4b93712e96be17029bd22787f2e39feb0e73272c; version=7bedaa5537604f34d1d63c5ec7891e559d2a61ed <829b00481734dd54e72f755fd6584bce6fbffbb0; version=7bedaa5537604f34d1d63c5ec7891e559d2a61ed <88a9483f093bbb9263dcf21bc7fdb5132e5de88d

Published CVSS scores

4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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

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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