Fix sleeping function called from invalid context on RT kernel in Kernel
Summary
GSD-2022-1003950: tracing: Fix sleeping function called from invalid context on RT kernel. Affects Kernel versions < be1f323fb9d9b14a505ca22d742d321769454de1. 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 Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential services and manages system resources. The vulnerability in question pertains to the tracing functionality of the Kernel. Tracing allows for the collection of runtime information about the system's execution flow. However, a flaw in the implementation of this feature on real-time (RT) kernels can lead to a sleeping function being called from an invalid context.
Vulnerability Detail
The vulnerability arises from the improper handling of sleeping functions in the tracing feature of the Kernel on RT kernels. When a sleeping function is called from an invalid context, it can result in system instability or crashes. An attacker may potentially exploit this vulnerability to execute arbitrary code or cause a denial-of-service (DoS) condition. The impact and attack plausibility of this vulnerability have not been proven yet.
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
No specific workaround has been provided for this vulnerability.
Conclusion
The vulnerability in the Kernel's tracing feature on RT kernels, which allowed for a sleeping function to be called from an invalid context, has been addressed in the Linux Kernel version v4.14.283. Users are advised to update their Kernel to this version or a subsequent release that includes the fix. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability can range from system instability to potential execution of arbitrary code or denial-of-service (DoS) attacks.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your manifest file, such as package-lock.json, and Vulert will provide real-time alerts for open-source vulnerabilities.
At the time of this report, there is no known exploit for this vulnerability. However, it is important to promptly apply the fix to mitigate any potential risks.
No, only RT kernels are affected by this vulnerability. Other versions of the Kernel may not be impacted.
For more details about this vulnerability, you can refer to the source at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1003xxx/GSD-2022-1003950.json
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
