CVE-2025-71146
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-23

Last updated on: 2026-02-26

Assigner: kernel.org

Description
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.
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Meta Information
Published
2026-01-23
Last Modified
2026-02-26
Generated
2026-06-16
AI Q&A
2026-01-23
EPSS Evaluated
2026-06-15
NVD
CVE-2025-71146
EUVD
EUVD-2026-4412
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.19
linux linux_kernel From 6.17.13 (inc) to 6.18 (exc)
linux linux_kernel 6.12.63
linux linux_kernel 6.18.2
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability in the Linux kernel's netfilter component (nf_conncount) involves a leaked connection tracking (ct) object in certain error paths. Specifically, some error paths skip the reference counting check and return immediately, causing the ct object to be leaked. The fix ensures that the reference counting check is always called to prevent this leak.

Impact Analysis

The vulnerability can lead to resource leaks in the Linux kernel's connection tracking system, potentially causing increased memory usage or instability in network-related operations. This could degrade system performance or reliability, especially in environments relying heavily on netfilter for network traffic management.

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