ocfs2: Race Condition in Searching Chunks and Releasing journal_head
Summary
GSD-2021-1002192: ocfs2: fix race between searching chunks and release journal_head from buffer_head. Affects Kernel versions < 6f1b228529ae49b0f85ab89bcdb6c365df401558. No fix is published. How to fix ↓
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.
No signup required · Results in about 60 seconds
Background
The ocfs2 package is a component of the Linux Kernel ecosystem. It provides a clustered file system for Linux, allowing multiple nodes to access and manage shared storage. The ocfs2 file system is designed to provide high availability and scalability for enterprise-level applications. However, a vulnerability has been discovered in ocfs2 that can lead to a race condition between searching chunks and releasing journal_head from buffer_head.
Vulnerability Detail
The vulnerability in ocfs2 arises from a race condition that occurs when searching for chunks and releasing journal_head from buffer_head concurrently. This race condition can result in inconsistent state and potential data corruption. An attacker could potentially exploit this vulnerability to manipulate the file system and gain unauthorized access to sensitive data. The vulnerability has been addressed in the Linux Kernel version v5.15 by commit 6f1b228529ae49b0f85ab89bcdb6c365df401558.
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 known workaround for this vulnerability. It is essential to update the Linux Kernel to the fixed version or apply the specific commit to mitigate the risk of exploitation.
Conclusion
The vulnerability in ocfs2 that allowed a race condition between searching chunks and releasing journal_head from buffer_head has been addressed in the Linux Kernel version v5.15. It is crucial to update the kernel to the fixed version or apply the specific commit to mitigate the risk of exploitation. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
ocfs2 is a clustered file system for Linux that provides high availability and scalability for enterprise-level applications.
A race condition is a software flaw that occurs when multiple processes or threads access shared resources concurrently, leading to unexpected behavior or data corruption.
The vulnerability in ocfs2 can result in data corruption and unauthorized access to sensitive information.
Yes, the vulnerability has been fixed in the Linux Kernel version v5.15 by commit 6f1b228529ae49b0f85ab89bcdb6c365df401558.
To update the Linux Kernel, you can pull the latest updates from the official Linux Kernel repository or apply the specific commit to your existing kernel version.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
