ocfs2: Fix Data Corruption by fallocate in Linux Kernel

Kernel Updated 02 Oct 2025

Summary

24/06/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000717: ocfs2: fix data corruption by fallocate. Affects Kernel versions < 624fa7baa3788dc9e57840ba5b94bc22b03cda57. No fix is published. How to fix ↓

Free scan

Check if this vulnerability affects your application

Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or Browse

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats

SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml

Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile

Javascript package-lock.json · yarn.lock · pnpm-lock.yaml

PHP composer.lock

Python poetry.lock · requirements.txt · Pipfile.lock

Go go.mod

Rust Cargo.lock

Ruby Gemfile.lock

Dart pubspec.lock

C/C++ conan.lock

Elixir mix.lock

Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Background

The ocfs2 package is a part of the Linux Kernel ecosystem. It is a file system designed for use with Oracle Cluster File System 2 (OCFS2) and provides features like shared-disk access and high availability. OCFS2 is widely used in clustered environments to store and manage data. However, a vulnerability has been discovered in the package that can lead to data corruption when using the fallocate system call.

Vulnerability Detail

The vulnerability in ocfs2 arises when the fallocate system call is used. This system call is used to preallocate or deallocate disk space for a file. However, due to a flaw in the implementation, this can result in data corruption. An attacker could potentially exploit this vulnerability to manipulate files and cause data loss or unauthorized access to sensitive information. The vulnerability was fixed in Linux Kernel version v4.4.272 by commit 624fa7baa3788dc9e57840ba5b94bc22b03cda57.

How To Fix

No fixed version is published for this vulnerability.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

There is no specific workaround mentioned for this vulnerability. Updating the Linux Kernel to the fixed version is the recommended solution.

Conclusion

The ocfs2 package in the Linux Kernel is vulnerable to data corruption when using the fallocate system call. It is crucial to update the kernel to version v4.4.272 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for Kernel →