ocfs2: dlmfs: Fix error handling of user_dlm_destroy_lock
Summary
GSD-2022-1004042: ocfs2: dlmfs: fix error handling of user_dlm_destroy_lock. Affects Kernel versions < 1434cd71ad9f3a6beda3036972983b6c4869207c. 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 part of the Linux Kernel ecosystem. It provides support for the Oracle Cluster File System 2 (OCFS2), which is a shared-disk file system designed for use in cluster environments. The dlmfs component within ocfs2 is responsible for managing distributed locks. These locks are used to coordinate access to shared resources among multiple nodes in a cluster.
Vulnerability Detail
The vulnerability identified as GSD-2022-1004042 in ocfs2:dmlfs is related to error handling in the user_dlm_destroy_lock function. The issue allows an attacker to trigger a race condition, leading to a use-after-free vulnerability. Exploiting this vulnerability could result in a denial of service (DoS) condition or potentially allow an attacker to execute arbitrary code with kernel privileges.
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. However, users can mitigate the risk by ensuring they are running an updated version of the Linux Kernel.
Conclusion
The ocfs2:dmlfs vulnerability GSD-2022-1004042 has been identified and fixed in the Linux Kernel version v4.9.318. Users are advised to update their Linux Kernel to the latest version to ensure the vulnerability is patched. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
ocfs2 is the Oracle Cluster File System 2, a shared-disk file system designed for use in cluster environments.
dlmfs is a component within ocfs2 that manages distributed locks used for coordinating access to shared resources in a cluster.
A use-after-free vulnerability occurs when a program continues to use a memory location after it has been freed. This can lead to unpredictable behavior and potential security issues.
A race condition is a situation where the behavior of a program depends on the relative timing of events. In this vulnerability, a race condition can be triggered, leading to the use-after-free vulnerability.
Exploiting this vulnerability could result in a denial of service (DoS) condition or allow an attacker to execute arbitrary code with kernel privileges.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
