What is CVE-2026-23142?

CVE-2026-23142 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.18 onward and patched in 6.1.162, 6.6.122, 6.12.67 and others. CVE-2026-23142 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23142?

CVE-2026-23142 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-23142?

Yes, CVE-2026-23142 has been patched. Fixed versions include 6.1.162, 6.6.122, 6.12.67 and others. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23142 actively exploited?

CVE-2026-23142 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23142

Medium

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure When a DAMOS-scheme DAMON sysfs directory setup fails after setup of access_pattern/ directory, subdirectories of access_pattern/ 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.

Package Linux Kernel

Published 2026-02-14

Last modified 2026-03-17

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 5.18 and later are affected. Fixed in 6.1.162, 6.6.122, 6.12.67, 6.18.7, 6.19 and their respective stable series.

Affected from

≥ 5.18

Fixed in

✓ 6.1.162 6.1.x ✓ 6.6.122 6.6.x ✓ 6.12.67 6.12.x ✓ 6.18.7 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2026-23142 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/16236b0b4a08fa3e326cf1373ef789dabdc2e30d
Patch
Kernel patch commit
https://git.kernel.org/stable/c/392b3d9d595f34877dd745b470c711e8ebcd225c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/725d4fdaa01bd1161782081f419e1568cc7432e0
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2026-23142

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-02-14

Modified 2026-03-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23142?

CVE-2026-23142 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.18 onward and has been patched in 6.1.162, 6.6.122, 6.12.67 and others. CVE-2026-23142 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23142?

CVE-2026-23142 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-23142?

Yes — CVE-2026-23142 has been patched. Fixed versions include 6.1.162, 6.6.122, 6.12.67 and others. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23142 actively exploited?

No — CVE-2026-23142 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.