ocfs2: Fix Data Corruption After Conversion from Inline Format

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-2021-1002005: ocfs2: fix data corruption after conversion from inline format. Affects Kernel versions >= f8a6a2ed4b7d1c3c8631eeb6d00572bc853094a8, < b05caf023b14cbed9223bb5b48ecc7bffe38f632. 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 for use in a cluster environment, providing features such as shared storage and high availability. The ocfs2 file system uses an inline format to store small files directly in the inode structure, improving performance for these files. However, a vulnerability has been discovered that can lead to data corruption after the conversion from the inline format to the regular file format.

Vulnerability Detail

The vulnerability in ocfs2 occurs during the conversion process from the inline format to the regular file format. If this conversion is not handled correctly, it can result in data corruption. An attacker could potentially exploit this vulnerability to modify or delete files, leading to data loss or unauthorized access to sensitive information. The vulnerability was introduced in Linux Kernel version v5.4.75 and has been fixed in version v5.4.156.

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 v5.4.156 or later. This update includes the necessary patches to address the issue and prevent data corruption during the conversion process. Users should ensure they are running the latest stable version of the Linux Kernel to mitigate the risk of this vulnerability.

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Workaround

There is no known workaround for this vulnerability. It is essential to apply the provided fix by updating the Linux Kernel to the recommended version.

Conclusion

The ocfs2 file system is vulnerable to data corruption after the conversion from the inline format. To mitigate this risk, it is crucial to update the Linux Kernel to version v5.4.156 or later. This update includes the necessary patches to fix the vulnerability and prevent potential data loss or unauthorized access. For further support on vulnerability remediation, please contact DevNack.com.

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