Race Condition Vulnerability in Linux Kernel: linux Package Affected
Summary
DEBIAN-CVE-2024-46851: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid race between dcn10_set_drr() and dc_state_destruct() dc_state_destruct() nulls the resource context of the DC state. Affects linux versions < 6.10.11-1. Fixed in 6.10.11-1. How to fix ↓
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Background
The linux package is the core component of the Debian operating system, providing essential functionalities for managing hardware and system resources. It serves as the foundation for running applications and services on Debian systems. The linux kernel is critical for system stability and performance, making it vital to address any vulnerabilities that may arise.
Vulnerability Detail
In the Linux kernel, a race condition vulnerability has been identified in the drm/amd/display subsystem. This issue arises when the function dc_state_destruct() nullifies the resource context of the DC state while dcn10_set_drr() is being executed. If these two functions are called concurrently, it can lead to the use of already nulled function callback fields, potentially causing system instability or crashes. The vulnerability is particularly concerning as it can be exploited if the timing generators are freed unexpectedly, leading to undefined behavior.
How To Fix
Minimum fixed version
6.10.11-1
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. It is recommended to apply the patch as soon as it is available to mitigate any risks associated with the race condition.
Conclusion
The identified race condition vulnerability in the Linux kernel's drm/amd/display subsystem poses a significant risk to system stability. Users are encouraged to update to the patched version of the linux package to safeguard their systems against potential exploitation. Regular monitoring and updates are essential for maintaining security.
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FAQ
A race condition occurs when two or more processes access shared resources concurrently, and the outcome depends on the timing of their execution. This can lead to unpredictable behavior and potential system crashes.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. By simply uploading your manifest file like package-lock.json, you can check if your application is affected by this vulnerability.
Exploiting this vulnerability could lead to system instability, crashes, or unexpected behavior in applications relying on the affected kernel functions.
While there are no specific workarounds available, it is crucial to apply the patch as soon as possible to mitigate risks associated with the vulnerability.
It is advisable to regularly check for updates to the linux package, especially after vulnerabilities are disclosed, to ensure your system remains secure.
References
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