Linux Kernel up to 6.1.161/6.6.121/6.12.66/6.18.6 DAMON Sysfs Interface mm/damon/sysfs denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.1.161/6.6.121/6.12.66/6.18.6. This impacts an unknown function of the file mm/damon/sysfs of the component DAMON Sysfs Interface. The manipulation leads to denial of service. This vulnerability is referenced as CVE-2026-23144. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.1.161/6.6.121/6.12.66/6.18.6. This issue affects an unknown functionality of the file mm/damon/sysfs of the component DAMON Sysfs Interface. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure When a context DAMON sysfs directory setup is failed after setup of attrs/ directory, subdirectories of attrs/ directory are not cleaned up. As a result, DAMON sysfs interface is nearly broken until the system reboots, and the memory for the unremoved directory is leaked. Cleanup the directories under such failures.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2026-23144 since 01/13/2026. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 299235 (Linux Distros Unpatched Vulnerability : CVE-2026-23144), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.162, 6.6.122, 6.12.67 or 6.18.7 eliminates this vulnerability. Applying the patch db7dfe78fc81bdd2b532d77f340fe453f2360426/43964644348f6b1add3055c4a6cae8f77d892a6e/5651c0c391c0029541794f9c4c9597faecfd401f/78b4eb99751ebd37ceade78810bf94de80f7fb3a/9814cc832b88bd040fc2a1817c2b5469d0f7e862 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (299235). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 299235
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23144

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.162/6.6.122/6.12.67/6.18.7
Patch: db7dfe78fc81bdd2b532d77f340fe453f2360426/43964644348f6b1add3055c4a6cae8f77d892a6e/5651c0c391c0029541794f9c4c9597faecfd401f/78b4eb99751ebd37ceade78810bf94de80f7fb3a/9814cc832b88bd040fc2a1817c2b5469d0f7e862

Timelineinfo

01/13/2026 CVE reserved
02/14/2026 +32 days Advisory disclosed
02/14/2026 +0 days VulDB entry created
03/18/2026 +32 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23144 (🔒)
GCVE (CVE): GCVE-0-2026-23144
GCVE (VulDB): GCVE-100-346025

Entryinfo

Created: 02/14/2026 17:54
Updated: 03/18/2026 02:16
Changes: 02/14/2026 17:54 (59), 02/17/2026 11:58 (2), 02/19/2026 10:00 (1), 03/18/2026 02:16 (10)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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