Critical Mutex Initialization Vulnerability in Linux Package
Summary
DEBIAN-CVE-2025-21824: In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Fix a use of uninitialized mutex commit c8347f915e67 ("gpu: host1x: Fix boot regression for Tegra") caused a use of uninitialized mutex lea... Affects linux versions < 6.12.16-1. Fixed in 6.12.16-1. How to fix ↓
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Background
The Linux package is a core component of the Debian operating system, providing essential functionalities for managing hardware and system resources. It is widely used across various environments, including servers, desktops, and embedded systems. This package is crucial for system stability and performance, making it a prime target for vulnerabilities that could compromise system integrity.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified related to the improper initialization of a mutex in the host1x driver. This issue was introduced by commit c8347f915e67, which resulted in a warning when CONFIG_DEBUG_MUTEXES and CONFIG_DEBUG_LOCK_ALLOC are enabled. The warning indicates a potential use of an uninitialized mutex, which could lead to undefined behavior, crashes, or security vulnerabilities in systems relying on this driver. The vulnerability is particularly concerning for systems utilizing NVIDIA Tegra hardware, as it may affect the stability and security of applications running on these platforms.
How To Fix
Minimum fixed version
6.12.16-1
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. However, users are advised to monitor their systems for any unusual behavior and apply the patch as soon as it becomes available.
Conclusion
The mutex initialization vulnerability in the Linux package poses significant risks to system stability and security, particularly for users of NVIDIA Tegra hardware. It is crucial for users to update their systems to the patched version to mitigate these risks. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.
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FAQ
The vulnerability involves the use of an uninitialized mutex in the Linux kernel, which can lead to system instability and potential security risks.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Simply upload your manifest file like package-lock.json to check for vulnerabilities.
If exploited, this vulnerability could lead to system crashes, undefined behavior, or security breaches, particularly in systems using NVIDIA Tegra hardware.
Yes, the vulnerability is fixed in version 6.12.16-1 of the Linux package. Users should upgrade to this version or later.
Detailed information can be found in the Debian CVE database or by visiting the Vulert website, which provides real-time monitoring for open-source vulnerabilities.
References
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