btrfs: Fix qgroup reserve overflow the qgroup limit

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-2022-1002171: btrfs: fix qgroup reserve overflow the qgroup limit. Affects Kernel versions < 44277c50fdba5019ca25bfad1b71e2561b0de11b. No fix is published. How to fix ↓

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Background

The btrfs package is a file system for Linux that provides advanced features such as snapshots, pooling, and data integrity. It is widely used in various Linux distributions. However, a vulnerability has been discovered in the qgroup reserve functionality of btrfs, which can lead to an overflow of the qgroup limit.

Vulnerability Detail

The vulnerability in btrfs allows an attacker to overflow the qgroup limit, potentially leading to a denial of service or privilege escalation. By exploiting this vulnerability, an attacker could exhaust the available qgroup resources, causing the system to become unresponsive or crash. This could also potentially allow an attacker to gain elevated privileges.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no known workaround for this vulnerability. It is essential to update the Linux Kernel to the recommended version to mitigate the risk.

Conclusion

The qgroup reserve overflow vulnerability in btrfs can have severe consequences, including denial of service and privilege escalation. It is crucial to update the Linux Kernel to the recommended version to mitigate the risk. For further support on vulnerability remediation, you can contact DevNack.com.

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