Critical Vulnerability in Linux Kernel: Module Initialization Failure Handling
Summary
CVE-2024-50002: In the Linux kernel, the following vulnerability has been resolved: static_call: Handle module init failure correctly in static_call_del_module() Module insertion invokes static_call_add_module() to initialize the static... 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, responsible for managing hardware resources and providing essential services to software applications. It is known for its stability, performance, and flexibility, making it a popular choice for servers, desktops, and embedded systems. However, vulnerabilities can arise, such as the one identified in CVE-2024-50002, which affects the module initialization process and can lead to system instability.
Vulnerability Detail
CVE-2024-50002 is a vulnerability in the Linux kernel's static call mechanism. It occurs during module insertion when the system attempts to initialize static calls in a module. If the allocation of a struct static_call_mod fails, the system incorrectly assumes that the key::mods pointer is valid, leading to a general protection fault (#GP) when dereferencing it. This flaw can cause system crashes or unpredictable behavior, especially if the module relies on static calls for its functionality.
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. It is recommended to apply the patch as soon as it becomes available to mitigate risks.
Conclusion
CVE-2024-50002 represents a significant vulnerability in the Linux kernel that can lead to system instability during module initialization. Users are advised to update their kernel to the latest patched version to mitigate risks. Regular monitoring for vulnerabilities using tools like Vulert can help maintain system security.
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FAQ
CVE-2024-50002 is a vulnerability in the Linux kernel that affects the static call mechanism during module initialization, potentially leading to system crashes.
If exploited, this vulnerability can cause a general protection fault, leading to system instability or crashes when loading certain modules.
The vulnerability affects Linux kernel versions used in Debian 11, 12, and 13. Check your kernel version to determine if you are at risk.
While there are no specific workarounds, it is crucial to monitor for updates and apply them as soon as possible to protect your system.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just a manifest file like package-lock.json. Visit Vulert Scanner to check if your application is affected by this vulnerability.
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