Fix sleeping function called from invalid context on RT kernel in Kernel
Summary
GSD-2022-1002567: tracing: Fix sleeping function called from invalid context on RT kernel. Affects Kernel versions < 9abf3db8bdb63ab545034148ef2118f4d088ca59. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that provides core functionalities and acts as a bridge between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the stability and security of the system. However, a vulnerability has been discovered in the Kernel that affects real-time (RT) kernels. Real-time kernels are designed to provide deterministic and predictable behavior, making them suitable for time-sensitive applications. This vulnerability allows a sleeping function to be called from an invalid context on RT kernels, potentially leading to system instability or crashes.
Vulnerability Detail
The vulnerability arises from a sleeping function being invoked from an invalid context on RT kernels. When a sleeping function is called from an invalid context, it can disrupt the expected flow of execution and cause issues such as deadlocks or race conditions. These issues can result in system instability, crashes, or even potential security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet, but it is essential to address it to ensure the stability and security of RT kernel-based systems.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
In conclusion, the vulnerability of a sleeping function being called from an invalid context on RT kernels can lead to system instability, crashes, or potential security vulnerabilities. It is crucial to update the Linux Kernel to version v5.18.4 or later to mitigate these risks. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability can range from system instability and crashes to potential security vulnerabilities. It is crucial to address this vulnerability to maintain the stability and security of RT kernel-based systems.
You can use tools like Vulert to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in the software. You can visit the Vulert playground at Vulert Scanner to check if your application is affected without requiring any signup.
No, this vulnerability is fixed in Linux Kernel version v5.18.4 and later. If you are using an older version of the Kernel, it is recommended to update to the latest version to mitigate the risks associated with this vulnerability.
No specific workaround is mentioned for this vulnerability. It is advised to update the Linux Kernel to the latest version to fix the vulnerability.
You can find more information about this vulnerability in the Open Source Vulnerability database maintained by the Cloud Security Alliance. The vulnerability ID is GSD-2022-1002567, and the source can be accessed at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1002xxx/GSD-2022-1002567.json.
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