CVE-2026-23195

Kernel memory corruption via premature dmem pool free

Published Feb 14, 2026 · Updated Feb 14, 2026

Use-after-free in Linux Kernel 6.14 through 6.18.9 and 6.19 release candidates allows local users to corrupt kernel memory. The cgroup/dmem unregister path frees a device-memory pool while callers can retain references, so a later uncharge writes through a dangling pool pointer. Reaching the flaw requires local access and a device-memory cgroup workflow that unregisters a region before outstanding pool users finish; the demonstrated result is an eight-byte write to freed slab memory.

CVSS severity7.8
High
EPSS probability0.11%
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 Linux Kernel 6.14 through 6.18.9 and 6.19 release candidates allows local users to corrupt kernel memory. The cgroup/dmem unregister path frees a device-memory pool while callers can retain references, so a later uncharge writes through a dangling pool pointer. Reaching the flaw requires local access and a device-memory cgroup workflow that unregisters a region before outstanding pool users finish; the demonstrated result is an eight-byte write to freed slab memory.

The record

CVE
CVE-2026-23195
Published
Feb 14, 2026
Updated
Feb 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1068
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

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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=6.14
  2. Affected versionversion=b168ed458ddecc176f3b9a1f4bcd83d7a4541c14 <99a2ef500906138ba58093b9893972a5c303c734
  3. Affected versionversion=b168ed458ddecc176f3b9a1f4bcd83d7a4541c14 <d3081353acaa6a638dcf75726066ea556a2de8d5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.14; version=b168ed458ddecc176f3b9a1f4bcd83d7a4541c14 <99a2ef500906138ba58093b9893972a5c303c734; version=b168ed458ddecc176f3b9a1f4bcd83d7a4541c14 <d3081353acaa6a638dcf75726066ea556a2de8d5

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0kernel.orgCVSS:3.1/AV:L/AC:H/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
T1068Exploitation for Privilege Escalation

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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