Critical Vulnerability in Linux Kernel: Socket State Check Relaxation
Summary
DEBIAN-CVE-2024-36484: In the Linux kernel, the following vulnerability has been resolved: net: relax socket state check at accept time. Affects linux versions < 5.10.223-1. Fixed in 5.10.223-1. How to fix ↓
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Background
The Linux kernel is a core component of the Linux operating system, responsible for managing hardware resources and providing essential services to applications. It is widely used across various platforms, including servers, desktops, and embedded systems. This vulnerability affects multiple versions of the Linux package in Debian distributions, specifically versions 5.10.223-1, 6.1.94-1, and 6.9.7-1. The vulnerability arises from a relaxation of socket state checks during the accept process, potentially leading to security risks.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified where the socket state check at accept time is relaxed. This issue was reported by Christoph, who encountered a warning during the execution of a process. The vulnerability can lead to unexpected behavior in the networking stack, particularly when a socket is in an inappropriate state during the accept syscall. This can result in denial of service or other security implications, especially in systems handling multiple network connections.
How To Fix
Minimum fixed version
5.10.223-1
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, no specific workarounds have been provided for this vulnerability. It is recommended to apply the patch as soon as it is available.
Conclusion
The vulnerability in the Linux kernel regarding socket state checks poses significant risks to systems running affected versions of the Linux package. It is imperative to update to the patched versions to mitigate these risks. Utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
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FAQ
The vulnerability involves a relaxation of socket state checks in the Linux kernel, which can lead to unexpected behavior during the accept syscall.
The affected versions include Linux 5.10.223-1 for Debian 11, 6.1.94-1 for Debian 12, and 6.9.7-1 for Debian 13 and 14.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Check your application against the vulnerability using the Vulert playground.
The vulnerability may lead to denial of service or other security risks, particularly in systems that manage multiple network connections.
Yes, patches are available for the affected versions of the Linux package. It is crucial to update to the patched versions as soon as possible.
References
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