Critical Buffer Overflow in Linux Kernel: linux Package Vulnerability
Summary
DEBIAN-CVE-2025-38080: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Increase block_sequence array size [Why] It's possible to generate more than 50 steps in hwss_build_fast_sequence, for example with a 6... Affects linux versions < 6.12.32-1. Fixed in 6.12.32-1. How to fix ↓
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Background
The linux package is a core component of the Debian operating system, providing the essential kernel that manages system resources and hardware interactions. It is responsible for enabling the execution of applications and ensuring system stability. This package is crucial for the overall functionality of the operating system, and vulnerabilities within it can lead to severe security risks, including system crashes and unauthorized access.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the drm/amd/display subsystem where the block_sequence array size is insufficient. This flaw allows for the generation of more than 50 steps in the hwss_build_fast_sequence function, particularly in scenarios involving a 6-pipe ASIC configuration. The overflow of the block_sequence buffer can corrupt the block_sequence_steps, leading to potential system crashes. This vulnerability is critical as it can be exploited to disrupt system operations and compromise stability.
How To Fix
Minimum fixed version
6.12.32-1
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 patch as soon as possible.
Conclusion
The identified vulnerability in the Linux kernel's linux package poses a significant risk due to its potential to cause system crashes and instability. Users are strongly advised to update to the patched version 6.12.32-1 to ensure their systems are secure. Regular monitoring for vulnerabilities using tools like Vulert can help maintain system integrity.
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FAQ
The vulnerability is a buffer overflow in the Linux kernel's drm/amd/display subsystem, which can lead to system crashes.
You can use Vulert, which monitors open-source vulnerabilities in your software. By utilizing the manifest file like package-lock.json, it alerts you in real-time. Visit Vulert Scanner to check your application without any signup.
Exploitation of this vulnerability can result in system instability, crashes, and potential unauthorized access to system resources.
Yes, a patch is available in version 6.12.32-1 of the linux package. Users should update to this version to mitigate the risk.
While there are no specific workarounds, it is crucial to prioritize updating the package as soon as possible to avoid potential exploitation.
References
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