Race Condition in Memory Handling in Linux Kernel - CVE-2025-38008
Summary
DEBIAN-CVE-2025-38008: In the Linux kernel, the following vulnerability has been resolved: mm/page_alloc: fix race condition in unaccepted memory handling The page allocator tracks the number of zones that have unaccepted memory using static_b... Affects linux versions < 6.12.30-1. Fixed in 6.12.30-1. How to fix ↓
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Background
The Linux kernel is the core component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It is widely used in various environments, from servers to embedded systems. The kernel's memory management subsystem includes a page allocator that handles memory allocation and deallocation. This vulnerability arises from a race condition in the handling of unaccepted memory, which can lead to unpredictable behavior and potential system instability.
Vulnerability Detail
In the Linux kernel, a race condition exists in the page allocator's handling of unaccepted memory. The static branch mechanism used to track the number of zones with unaccepted memory is not properly synchronized, allowing concurrent operations to interfere with each other. This can lead to warnings and potential system instability, particularly in high-performance scenarios. The issue was identified by developers Borislav and Thomas, who noted that the tracking mechanism could result in incorrect memory management.
How To Fix
Minimum fixed version
6.12.30-1
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 advisable to apply the patch as soon as it is available to mitigate any risks associated with the race condition.
Conclusion
CVE-2025-38008 is a significant vulnerability in the Linux kernel that can lead to race conditions in memory handling. It is essential for users to update their systems to the patched version to ensure stability and security. Utilizing tools like Vulert can help monitor for such vulnerabilities in real-time.
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FAQ
CVE-2025-38008 is a vulnerability in the Linux kernel related to a race condition in the handling of unaccepted memory, which can lead to system instability.
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 without requiring any signup.
The primary risk is system instability due to improper memory management, which could lead to crashes or unpredictable behavior in applications relying on the kernel.
Yes, a patch is available in version 6.12.30-1 of the Linux package. It is recommended to update to this version or later.
While there are no specific workarounds, it is crucial to monitor the situation and apply the patch as soon as possible to mitigate risks.
References
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