CVE-2025-71146: netfilter: nf_conncount: fix leaked ct in error paths

Published Jan 23, 2026
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nfconncount: 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.

Affected Software

5 affected components
linux/kernel
Linux Linux kernel>=6.17.13<6.18
Linux Linux kernel=6.12.63
Linux Linux kernel=6.18.2
Linux Linux kernel=6.19-rc1

Event History

Jan 23, 2026
CVE Published
via MITRE·02:15 PM
Data Sourced
via MITRE·02:15 PM
DescriptionSeverity
Data Sourced
via NVD·03:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-71146?

CVE-2025-71146 has been classified as a moderate severity vulnerability affecting the Linux kernel.

2

How do I fix CVE-2025-71146?

To fix CVE-2025-71146, upgrade your Linux kernel to the latest stable version that includes the patch for this vulnerability.

3

What versions of the Linux kernel are affected by CVE-2025-71146?

CVE-2025-71146 affects certain versions of the Linux kernel where the nf_conncount feature is implemented.

4

What are the symptoms of CVE-2025-71146?

Symptoms of CVE-2025-71146 may include unexpected behavior in network connection tracking due to potential memory leakage.

5

Is CVE-2025-71146 exploitative in nature?

Yes, CVE-2025-71146 can potentially be exploited to cause stability issues in network services relying on the Linux kernel.

Contact

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