Use After Free Vulnerability in lib/test Package

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-2022-1001170: lib/test: use after free in register_test_dev_kmod(). Affects Kernel versions >= d9c6a72d6fa29d3a7999dda726577e5d1fccafa5, < 05f90fe2c7e8f27d7691ae57cb604e4c156b70e6. No fix is published. How to fix ↓

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Background

The lib/test package is a component of the Linux Kernel ecosystem. It provides functionality for testing and debugging various kernel features. The package includes modules and functions that aid in the development and verification of kernel code. However, a use after free vulnerability has been discovered in the register_test_dev_kmod() function of the lib/test package.

Vulnerability Detail

The use after free vulnerability in the register_test_dev_kmod() function allows an attacker to exploit a freed memory region. This can lead to arbitrary code execution or a denial of service attack. The vulnerability was introduced in version v4.13 of the Linux Kernel and was fixed in version v5.17.2. 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 v5.17.2 or later. This can be done by pulling the latest changes from the official Linux Kernel repository: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/

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Workaround

No specific workaround has been mentioned for this vulnerability.

Conclusion

In conclusion, the use after free vulnerability in the lib/test package of the Linux Kernel can lead to arbitrary code execution or a denial of service attack. It is recommended to update the Linux Kernel to version v5.17.2 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.

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You can find more information about this vulnerability in the vulnerability database maintained by the Cloud Security Alliance. The source link is available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1001xxx/GSD-2022-1001170.json