Vulnerability in btrfs: fix abort logic in btrfs_replace_file_extents

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-2021-1002029: btrfs: fix abort logic in btrfs_replace_file_extents. Affects Kernel versions < 0e32a2b85c7d92ece86c17dfef390c5ed79c6378. No fix is published. How to fix ↓

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Background

The btrfs package is a component of the Linux Kernel, which is responsible for managing the B-tree file system. It provides advanced features such as snapshots, pooling, and checksums. The btrfs_replace_file_extents function is used to replace file extents within the file system. However, a vulnerability has been discovered in the abort logic of this function.

Vulnerability Detail

The vulnerability in btrfs_replace_file_extents allows an attacker to exploit the abort logic, potentially leading to a denial-of-service (DoS) attack or other security issues. The exact impact and attack vectors have not been proven yet. This vulnerability has been fixed in Linux Kernel version v5.10.75 by commit 0e32a2b85c7d92ece86c17dfef390c5ed79c6378.

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 v5.10.75 or later. This can be done by obtaining the updated kernel source code from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it according to the provided instructions.

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

In conclusion, the btrfs package in the Linux Kernel is vulnerable to an issue in the abort logic of the btrfs_replace_file_extents function. It is recommended to update the Linux Kernel to version v5.10.75 or later to fix this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.

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