UAF bugs in ax25 timers in Kernel

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1001639: ax25: Fix UAF bugs in ax25 timers. Affects Kernel versions < 85f25bb9a0051198af48ac2f3afc9f16f2277114. No fix is published. How to fix ↓

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Background

The Kernel is a critical component of the Linux operating system that provides core functionalities and interfaces between hardware and software. It manages system resources, facilitates communication between processes, and handles device drivers. The ax25 module in the Kernel is responsible for implementing the AX.25 protocol, which is used for packet radio communication. This vulnerability specifically affects the ax25 timers, which are used for managing various time-based operations within the AX.25 protocol.

Vulnerability Detail

The UAF (Use-After-Free) bugs in ax25 timers can lead to potential security vulnerabilities. Use-After-Free is a type of memory corruption bug where a program continues to use a memory address after it has been freed, leading to unpredictable behavior and potential exploitation. In this case, the ax25 timers may not be properly handled, allowing an attacker to manipulate the timers and potentially execute arbitrary code or cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven yet.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no specific workaround mentioned for this vulnerability. However, applying the recommended fix by updating the Linux Kernel to the latest version should resolve the issue.

Conclusion

The UAF bugs in ax25 timers in the Kernel can potentially lead to security vulnerabilities. It is recommended to update the Linux Kernel to the latest version to mitigate this issue. For further support on vulnerability remediation, please contact DevNack.com.

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