Critical Vulnerability in Linux Kernel: Race Condition in Winch IRQ Registration
Summary
DEBIAN-CVE-2024-39292: In the Linux kernel, the following vulnerability has been resolved: um: Add winch to winch_handlers before registering winch IRQ Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the wi... Affects linux versions < 5.10.221-1. Fixed in 5.10.221-1. 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 Linux kernel is the core component of many operating systems, responsible for managing hardware resources and providing essential services to software applications. It is known for its stability, performance, and flexibility. However, like any complex software, it can have vulnerabilities. This specific issue relates to the registration of winch IRQs, which can lead to system instability if not addressed.
Vulnerability Detail
In the Linux kernel, a race condition exists when registering a winch IRQ. If an interrupt occurs before the winch is added to the winch_handlers list, it can lead to a situation where a winch that is scheduled to be freed is added to the list. This can cause a panic during the winch_cleanup process, potentially crashing the system. The vulnerability arises from the improper ordering of operations during IRQ registration, making it critical to resolve.
How To Fix
Minimum fixed version
5.10.221-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to apply the available patches as soon as possible.
Conclusion
The vulnerability in the Linux kernel regarding the race condition in winch IRQ registration poses a significant risk to system stability. It is crucial to apply the necessary patches to mitigate this risk and ensure the continued reliability of your systems. Utilizing tools like Vulert can aid in monitoring and managing vulnerabilities effectively.
See every vulnerability recorded for linux →
FAQ
The vulnerability is a race condition in the Linux kernel related to the registration of winch IRQs, which can lead to system crashes.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
Failure to address this vulnerability may result in system instability and crashes, particularly when handling winch IRQs.
Yes, the vulnerability is fixed in specific versions: 5.10.221-1 for Debian 11, 6.1.94-1 for Debian 12, and 6.9.7-1 for Debian 13 and 14.
Regularly update your Linux package to the latest patched version and monitor for vulnerabilities using tools like Vulert.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
