Race Condition Vulnerability in configfs
Summary
GSD-2022-1000802: configfs: fix a race in configfs_{,un}register_subsystem(). Affects Kernel versions >= 7063fbf2261194f72ee75afca67b3b38b554b5fa, < e7a66dd2687758718eddd79b542a95cf3aa488cc. 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 configfs vulnerability affects the Kernel package in the Linux ecosystem. Kernel is the core component of the Linux operating system responsible for managing system resources and providing an interface for communication between hardware and software. configfs is a virtual file system in the Kernel that allows users to create and manage kernel objects dynamically. It provides a way to expose configuration information to userspace via a filesystem-like interface. However, a race condition exists in the configfs_{,un}register_subsystem() functions, which can lead to potential security vulnerabilities.
Vulnerability Detail
The race condition vulnerability in configfs_{,un}register_subsystem() functions allows for a race condition to occur during the registration and unregistration of subsystems in the configfs virtual file system. This race condition can be exploited by an attacker to manipulate the state of the system and potentially gain unauthorized access or cause a denial of service. The vulnerability was introduced in version v2.6.16 of the Linux Kernel and has been fixed in version v5.15.26 by commit e7a66dd2687758718eddd79b542a95cf3aa488cc.
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 available for this vulnerability. It is recommended to apply the fix by updating the Kernel to the latest version.
Conclusion
The race condition vulnerability in configfs can pose a security risk to systems running the affected versions of the Linux Kernel. It is important to update the Kernel to the latest version to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
configfs is a virtual file system in the Linux Kernel that allows users to create and manage kernel objects dynamically. It provides a way to expose configuration information to userspace via a filesystem-like interface.
A race condition is a software vulnerability that occurs when multiple threads or processes access shared data concurrently, leading to unexpected and potentially harmful behavior. In the case of this vulnerability, the race condition occurs during the registration and unregistration of subsystems in the configfs virtual file system.
The race condition vulnerability in configfs can be exploited by an attacker to manipulate the state of the system and potentially gain unauthorized access or cause a denial of service. The exact impact depends on the specific context and privileges of the attacker.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert is a tool that monitors and alerts in real-time for open-source vulnerabilities in software, using just a manifest file like package-lock.json.
You can find more information about this vulnerability in the GSD-2022-1000802.json file in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000802.json).
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
