Vulnerability in mm/mempolicy Package: mpol_new Leak in shared_policy_replace

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-2022-1001352: mm/mempolicy: fix mpol_new leak in shared_policy_replace. Affects Kernel versions >= 42288fe366c4f1ce7522bc9f27d0bc2a81c55264, < 6e00309ac716fa8225f0cbde2cd9c24f0e74ee21. No fix is published. How to fix ↓

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Background

The mm/mempolicy package is a component of the Linux Kernel, which is responsible for managing memory policies in the system. It provides functionality for setting and retrieving memory policies for processes and memory ranges. The shared_policy_replace function in this package is vulnerable to a memory leak issue.

Vulnerability Detail

The vulnerability, identified as GSD-2022-1001352, originates from a memory leak in the shared_policy_replace function of the mm/mempolicy package. This issue was introduced in version v3.8 of the Linux Kernel and has been fixed in version v5.16.20. The vulnerability allows an attacker to cause a memory leak, potentially leading to resource exhaustion and denial of service attacks. 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 v5.16.20 or later. This update includes the commit 6e00309ac716fa8225f0cbde2cd9c24f0e74ee21, which addresses the memory leak issue in the shared_policy_replace function.

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Workaround

No workaround has been provided for this vulnerability.

Conclusion

The mm/mempolicy package in the Linux Kernel is vulnerable to a memory leak issue in the shared_policy_replace function. To mitigate this vulnerability, it is recommended to update the Linux Kernel to version v5.16.20 or later. For further support on vulnerability remediation, please contact DevNack.com.

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