CVE-2026-23135

Local system crash via mismatched DMA pointer

Published Feb 14, 2026 · Updated Feb 14, 2026

Invalid DMA pointer release in affected Linux Kernel releases allows local users to crash systems through the ath12k Wi-Fi driver. The ath12k cleanup path passes aligned buffer addresses to dma_free_coherent instead of the original addresses saved during allocation. Exploitation requires local low-privileged access and an active ath12k device; the documented impact is a kernel crash without data disclosure.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Invalid DMA pointer release in affected Linux Kernel releases allows local users to crash systems through the ath12k Wi-Fi driver. The ath12k cleanup path passes aligned buffer addresses to dma_free_coherent instead of the original addresses saved during allocation. Exploitation requires local low-privileged access and an active ath12k device; the documented impact is a kernel crash without data disclosure.

The record

CVE
CVE-2026-23135
Published
Feb 14, 2026
Updated
Feb 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 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=6.3
  2. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <24585a13c41ea7253ee59aac74441fb570f5824a
  3. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <36e0bc5e8b282564906fca636c4ebc99814de4e7
  4. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <4846b32be324f4dd3653f38a3f69c049543d52ae
  5. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <bb97131fbf9b708dd9616ac2bdc793ad102b5c48

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.3; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <24585a13c41ea7253ee59aac74441fb570f5824a; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <36e0bc5e8b282564906fca636c4ebc99814de4e7; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <4846b32be324f4dd3653f38a3f69c049543d52ae; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <bb97131fbf9b708dd9616ac2bdc793ad102b5c48

Published CVSS scores

6.1Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7SUSECVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/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 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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