CVE-2025-71146

netfilter: nf_conncount: fix leaked ct in error paths

State: Published
Severity: 7.5 High
Published: Jan 23, 2026
Updated: Aug 5, 2026
Reserved: Jan 13, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	6e86f0eca857ee42787e30e9ec0b726aebfcae0a to before 08fa37f4c8c59c294e9c18fea2d083ee94074e5aAffected b160895d6bc9690459b16ef87799c9bd456af3ec to before e1ac8dce3a893641bef224ad057932f142b8a36fAffected 8d5a2c94c24dcc226863a7c2b5034750370c2189 to before f381a33f34dda9e4023e38ba68c943bca83245e9Affected da9f247fb5efcd5a2730cdc989291b383c439e10 to before 325eb61bb30790ea27782203a17b007ce1754a67Affected 3558faee8aace3541189c3a2ca45c7e85e144b44 to before 0b88be7211d21a0d68bb1e56dc805944e3654d6fAffected f6904ed15ed1a188543057e3cb0d02daa80edfc9 to before 4bd2b89f4028f250dd1c1625eb3da1979b04a5e8Affected be102eb6a0e7c03db00e50540622f4e43b2d2844 to before 2e2a720766886190a6d35c116794693aabd332b6Affected 8c2da7330214ce30f8333d1799a27ed0a9418f07Affected 6.17.13 to before 6.18Affected
LinuxLinux	6.12.63 to before 6.12.64Affected 6.18.2 to before 6.18.3Affected

Product

Versions

LinuxLinux

6e86f0eca857ee42787e30e9ec0b726aebfcae0a to before 08fa37f4c8c59c294e9c18fea2d083ee94074e5aAffected
b160895d6bc9690459b16ef87799c9bd456af3ec to before e1ac8dce3a893641bef224ad057932f142b8a36fAffected
8d5a2c94c24dcc226863a7c2b5034750370c2189 to before f381a33f34dda9e4023e38ba68c943bca83245e9Affected
da9f247fb5efcd5a2730cdc989291b383c439e10 to before 325eb61bb30790ea27782203a17b007ce1754a67Affected
3558faee8aace3541189c3a2ca45c7e85e144b44 to before 0b88be7211d21a0d68bb1e56dc805944e3654d6fAffected
f6904ed15ed1a188543057e3cb0d02daa80edfc9 to before 4bd2b89f4028f250dd1c1625eb3da1979b04a5e8Affected
be102eb6a0e7c03db00e50540622f4e43b2d2844 to before 2e2a720766886190a6d35c116794693aabd332b6Affected
8c2da7330214ce30f8333d1799a27ed0a9418f07Affected
6.17.13 to before 6.18Affected

LinuxLinux

6.12.63 to before 6.12.64Affected
6.18.2 to before 6.18.3Affected

References

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