What is CVE-2025-71146?

CVE-2025-71146 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 6.17.13 onward. CVE-2025-71146 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-71146?

CVE-2025-71146 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-2025-71146?

No patch is currently available for CVE-2025-71146. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2025-71146 actively exploited?

CVE-2025-71146 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2025-71146

Medium

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conncount: fix leaked ct in error paths There are some situations where ct might be leaked as error paths are skipping the refcounted check and return immediately. In order to solve it make sure that the check is always called.

Package Linux Kernel

Published 2026-01-23

Last modified 2026-02-26

CVSS version 3.1

Patch available

Not yet patched

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

Weakness type

CWE-401

CVE-2025-71146 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.17.13, 6.12.63, 6.18.2 and later are affected. No fixed version recorded yet.

Affected from

≥ 6.17.13 ≥ 6.12.63 ≥ 6.18.2

References

The following references provide additional information about CVE-2025-71146 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/08fa37f4c8c59c294e9c18fea2d083ee94074e5a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/0b88be7211d21a0d68bb1e56dc805944e3654d6f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2e2a720766886190a6d35c116794693aabd332b6
Patch

7 patch commits total View all on NVD

Details

CVE ID CVE-2025-71146

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-01-23

Modified 2026-02-26

KEV No

Patch

Not yet patched

Package linux

Frequently asked questions

What is CVE-2025-71146?

CVE-2025-71146 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 6.17.13 onward . CVE-2025-71146 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-71146?

CVE-2025-71146 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-2025-71146?

No patch is currently available for CVE-2025-71146. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2025-71146 actively exploited?

No — CVE-2025-71146 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. View CWE-401 on MITRE CWE →