netfilter: conntrack: re-fetch conntrack after insertion

Kernel Updated 02 Oct 2025

Summary

28/06/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1003929: netfilter: conntrack: re-fetch conntrack after insertion. Affects Kernel versions >= 71d8c47fc653711c41bc3282e5b0e605b3727956, < 92a999d1963eed0df666284e20055136ceabd12f. No fix is published. How to fix ↓

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Background

The netfilter package is a part of the Linux Kernel ecosystem and is responsible for packet filtering and network address translation. It provides functionality for managing network connections and tracking their state. The conntrack component within netfilter is used to track network connections and store relevant information about them. This vulnerability affects the conntrack module in the Linux Kernel.

Vulnerability Detail

The vulnerability in the conntrack module allows an attacker to bypass certain security measures by re-fetching the conntrack entry after its insertion. This can lead to unauthorized access, information disclosure, or other malicious activities. The vulnerability was introduced in version v4.7 of the Linux Kernel and has been fixed in version v4.19.246. The impact and attack plausibility of this vulnerability have not been proven yet.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.19.246 or later. This can be done by updating the kernel package using the package manager of the Linux distribution being used. Alternatively, the kernel source code can be obtained from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiled manually.

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Workaround

There is no known workaround for this vulnerability at the moment.

Conclusion

The netfilter conntrack module in the Linux Kernel is vulnerable to a security issue that allows for potential unauthorized access and information disclosure. It is recommended to update the Linux Kernel to version v4.19.246 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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