Critical Shutdown Health Drain Vulnerability in Linux Kernel Packages
Summary
CVE-2024-43866: In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Always drain health in shutdown callback There is no point in recovery during device shutdown. Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, providing essential services for hardware management and system operations. It is widely used across various distributions, including Debian. This vulnerability affects the health management of the Mellanox mlx5 network driver during device shutdown, which can lead to system instability and potential crashes.
Vulnerability Detail
In the Linux kernel, specifically within the net/mlx5 subsystem, a vulnerability has been identified where health work is not properly drained during the shutdown callback of the device. This oversight can lead to race conditions and NULL pointer dereferences, potentially causing system crashes or undefined behavior. The vulnerability arises from the unnecessary recovery attempts during device shutdown, which are not only redundant but also risky.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to apply the kernel update as soon as it becomes available.
Conclusion
CVE-2024-43866 is a significant vulnerability in the Linux kernel that can lead to system instability during device shutdown. It is crucial for users to update their systems to the latest kernel versions to mitigate this risk. Monitoring tools like Vulert can assist in identifying vulnerabilities without the need for complex setups.
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FAQ
CVE-2024-43866 is a vulnerability in the Linux kernel related to the mlx5 network driver, which can lead to system crashes during device shutdown.
If your system uses the affected Linux kernel versions, it may experience instability or crashes when shutting down devices that utilize the mlx5 driver.
The vulnerability affects Linux kernel versions in Debian 11, 12, and 13, with a specific fix available for Debian 13 starting from version 6.10.4-1.
You can use tools like Vulert, which monitors open-source vulnerabilities in your software. By uploading your package-lock.json file, you can check for vulnerabilities in real-time.
Yes, Vulert allows you to monitor vulnerabilities using just a manifest file like package-lock.json without requiring any installation. You can also use the Vulert playground to check if your application is affected.
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