Vulnerability in mm/mempolicy Package: Illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind()

Kernel Updated 02 Oct 2025

Summary

14/11/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1002104: mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind(). Affects Kernel versions >= bda420b985054a3badafef23807c4b4fa38a3dff, < 9ee4e9ae98f1f262d6fae0d266cfdf3ba2c321d9. No fix is published. How to fix ↓

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Background

The mm/mempolicy package is a component of the Linux Kernel that manages memory policies and NUMA (Non-Uniform Memory Access) balancing. It provides functionality for controlling memory allocation and migration across NUMA nodes in a system. This vulnerability specifically affects the mbind() function within the package.

Vulnerability Detail

The vulnerability in mm/mempolicy allows the use of illegal flags, specifically MPOL_F_NUMA_BALANCING and MPOL_LOCAL, in the mbind() function. This can lead to potential security issues, although the actual impact and attack plausibility have not been proven yet. The vulnerability was introduced in Linux Kernel version v5.12 and fixed in version v5.14.15.

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.

Conclusion

The vulnerability in the mm/mempolicy package can potentially lead to security issues. It is recommended to update the Linux Kernel to version v5.14.15 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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