Memory Ordering Vulnerability in btrfs Kernel Package

Kernel Updated 02 Oct 2025

Summary

29/11/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1002245: btrfs: fix memory ordering between normal and ordered work functions. Affects Kernel versions >= 08a9ff3264181986d1d692a4e6fce3669700c9f8, < ed058d735a70f4b063323f1a7bb33cda0f987513. No fix is published. How to fix ↓

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Background

The btrfs package is a file system for Linux Kernel that provides advanced features such as snapshots, pooling, and checksums. It is widely used in various Linux distributions. The vulnerability in btrfs affects the memory ordering between normal and ordered work functions.

Vulnerability Detail

The vulnerability arises due to improper memory ordering in the normal and ordered work functions of the btrfs package. This can lead to potential security risks, although the actual impact and attack plausibility have not been proven yet. The vulnerability was introduced in version v3.15 of the Linux Kernel and has been fixed in version v4.19.218 by commit ed058d735a70f4b063323f1a7bb33cda0f987513.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No specific workaround has been mentioned for this vulnerability.

Conclusion

In conclusion, the btrfs package in the Linux Kernel is vulnerable to a memory ordering issue between normal and ordered work functions. It is recommended to update the Linux Kernel to version v4.19.218 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.

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