Vulnerability in btrfs Defragmentation Functionality

Kernel Updated 02 Oct 2025

Summary

18/03/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1000723: btrfs: defrag: allow defrag_one_cluster() to skip large extent which is not a target. Affects Kernel versions < 833df0a3d38c4d5bd3cd84b8dd38855792aa6573. No fix is published. How to fix ↓

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Background

The btrfs package is a part of the Linux Kernel ecosystem and is responsible for providing support for the B-tree file system. It offers advanced features such as snapshots, checksums, and efficient data storage. The defragmentation functionality within btrfs aims to optimize file system performance by rearranging data clusters. However, a vulnerability has been discovered in this functionality.

Vulnerability Detail

The vulnerability in the btrfs defragmentation functionality allows the defrag_one_cluster() function to skip a large extent that is not the target of defragmentation. This can lead to suboptimal defragmentation results and potential performance issues. The vulnerability has been assigned the ID GSD-2022-1000723 and has been fixed in Linux Kernel version v5.16.12 by commit 833df0a3d38c4d5bd3cd84b8dd38855792aa6573.

How To Fix

No fixed version is published for this vulnerability.

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Conclusion

The vulnerability in the btrfs defragmentation functionality can result in suboptimal defragmentation and potential performance issues. It is crucial to update the Linux Kernel to version v5.16.12 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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