Vulnerability in btrfs Package: Failure to Insert Second Ref in rename_exchange

Kernel Updated 02 Oct 2025

Summary

25/06/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000784: btrfs: abort in rename_exchange if we fail to insert the second ref. Affects Kernel versions < 0df50d47d17401f9f140dfbe752a65e5d72f9932. No fix is published. How to fix ↓

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Background

The btrfs package is a component of the Linux Kernel ecosystem. It provides support for the B-tree file system, which is designed to be a modern and scalable file system for Linux. Btrfs offers features such as snapshots, checksums, and RAID-like functionality. However, a vulnerability has been discovered in the package that affects the rename_exchange function.

Vulnerability Detail

The vulnerability in the btrfs package occurs when the system fails to insert the second reference during the rename_exchange operation. This issue can potentially lead to an abort, causing the operation to fail. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v5.10.43 by commit 0df50d47d17401f9f140dfbe752a65e5d72f9932.

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

In conclusion, the btrfs package in the Linux Kernel is vulnerable to a failure in inserting the second reference during the rename_exchange operation. It is recommended to update the Linux Kernel to version v5.10.43 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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