Critical Vulnerability in Linux Kernel: HE Operation Element Parsing Flaw
Summary
DEBIAN-CVE-2024-40930: In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate HE operation element parsing Validate that the HE operation element has the correct length before parsing it. Affects linux versions < 6.9.7-1. Fixed in 6.9.7-1. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, providing the essential interface between computer hardware and software. It is known for its stability, performance, and flexibility, supporting a wide range of hardware architectures. This vulnerability specifically affects the wireless networking component, where improper validation of HE operation elements can lead to potential security risks.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the wifi subsystem, specifically in the cfg80211 module. The issue arises from the failure to validate the length of the HE operation element before parsing it. This oversight can lead to various security implications, including potential denial of service or exploitation by malicious actors to manipulate network operations. The vulnerability is cataloged as DEBIAN-CVE-2024-40930 and affects versions prior to 6.9.7-1.
How To Fix
Minimum fixed version
6.9.7-1
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
As a temporary measure, users can disable the affected wireless functionality until the package is updated. This can be done by running the command: 'sudo modprobe -r cfg80211'. However, this will limit wireless connectivity until the issue is resolved.
Conclusion
The vulnerability in the Linux kernel regarding HE operation element parsing poses significant security risks. It is crucial for users to update their systems to the patched version 6.9.7-1 to mitigate these risks. Utilizing tools like Vulert can help in monitoring and managing open-source vulnerabilities effectively.
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FAQ
The vulnerability involves improper validation of HE operation elements in the Linux kernel's wifi subsystem, potentially leading to security risks.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities. By uploading your manifest file like package-lock.json, you can check if your application is affected.
Failure to address this vulnerability may expose your system to security risks, including denial of service and potential exploitation by attackers.
Yes, temporarily disabling the wireless functionality can mitigate the risk until the patch is applied.
Detailed information can be found in the Debian CVE database or by visiting the Vulert website for real-time monitoring of vulnerabilities.
References
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