ocfs2: Fix Data Corruption by Fallocate

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-2021-1000755: ocfs2: fix data corruption by fallocate. Affects Kernel versions < cc2edb99ea606a45182b5ea38cc8f4e583aa0774. No fix is published. How to fix ↓

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Background

ocfs2 is a file system implemented in the Linux Kernel. It is designed to provide a shared disk file system for Oracle Real Application Clusters (RAC) environments. ocfs2 allows multiple nodes to concurrently access the same shared storage, providing high availability and scalability for clustered applications. However, a vulnerability has been discovered in ocfs2 related to the fallocate system call.

Vulnerability Detail

The vulnerability in ocfs2 allows for data corruption when using the fallocate system call. This system call is used to preallocate space for a file, but due to a flaw in ocfs2, it can lead to data corruption. An attacker could exploit this vulnerability to manipulate the file system and potentially cause data loss or unauthorized access to sensitive information. The vulnerability was introduced in version X and is fixed in version Y of the Linux Kernel.

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 necessary to update the Linux Kernel to the fixed version in order to address the issue.

Conclusion

The ocfs2 file system in the Linux Kernel is vulnerable to data corruption when using the fallocate system call. To mitigate this vulnerability, it is crucial to update the Linux Kernel to the fixed version. For further support on vulnerability remediation, please contact DevNack.com.

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