Race Condition Vulnerability in configfs
Summary
GSD-2022-1000735: configfs: fix a race in configfs_{,un}register_subsystem(). Affects Kernel versions >= 7063fbf2261194f72ee75afca67b3b38b554b5fa, < 3aadfd46858b1f64d4d6a0654b863e21aabff975. No fix is published. How to fix ↓
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Background
The Linux Kernel is an open-source monolithic Unix-like computer operating system kernel. It provides the essential services to enable user programs to run on the computer's hardware. The configfs subsystem in the Linux Kernel allows users to create and manage virtual file systems to configure various kernel components. It provides a way to expose kernel objects as files and directories in a virtual file system. However, a race condition vulnerability has been identified in the configfs_register_subsystem() and configfs_unregister_subsystem() functions.
Vulnerability Detail
The race condition vulnerability in the configfs_register_subsystem() and configfs_unregister_subsystem() functions can be exploited by an attacker to cause a denial-of-service (DoS) condition or potentially execute arbitrary code with kernel privileges. The vulnerability occurs due to a race condition between multiple threads accessing the configfs subsystem. By manipulating the timing of certain operations, an attacker can trigger a race condition and corrupt the internal data structures of the configfs subsystem, leading to a system crash or arbitrary code execution.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the official patch or update the Linux Kernel to the latest stable version.
Conclusion
The race condition vulnerability in the configfs subsystem of the Linux Kernel can lead to a denial-of-service condition or arbitrary code execution. It is crucial to update the kernel to the latest stable version or apply the official patch to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Configfs is a subsystem in the Linux Kernel that allows users to create and manage virtual file systems to configure various kernel components.
A race condition vulnerability occurs when multiple threads or processes access shared resources in an unexpected order, leading to unpredictable behavior or security vulnerabilities.
This vulnerability can be exploited by an attacker to cause a denial-of-service (DoS) condition or potentially execute arbitrary code with kernel privileges.
To fix this vulnerability, update the Linux Kernel to version v5.16.12 or later, which includes the necessary patch to address the race condition vulnerability.
There is no known workaround for this vulnerability. It is recommended to apply the official patch or update the Linux Kernel to the latest stable version.
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