Link ID Management Vulnerability in Linux Package: Critical Issue Resolved
Summary
DEBIAN-CVE-2024-57898: In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: clear link ID from bitmap during link delete after clean up Currently, during link deletion, the link ID is first removed from the valid... Affects linux versions < 6.12.9-1. Fixed in 6.12.9-1. How to fix ↓
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Background
The Linux package is a core component of the Debian operating system, providing essential functionalities for managing hardware and system resources. It serves as the foundation for various applications and services, enabling communication between software and hardware. This vulnerability specifically affects the link management within the Wi-Fi subsystem, which is crucial for maintaining stable network connections.
Vulnerability Detail
In the Linux kernel, a vulnerability was identified in the Wi-Fi subsystem where the link ID was prematurely cleared from the valid_links bitmap during link deletion. This premature action can lead to a situation where certain functions, such as cfg80211_cac_event(), expect the link ID to be present but find it missing, resulting in a WARN_ON() trigger. This flaw can disrupt network operations and lead to instability in Wi-Fi connections.
How To Fix
Minimum fixed version
6.12.9-1
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 recommended to apply the patch as soon as it becomes available.
Conclusion
The vulnerability in the Linux package regarding link ID management poses a significant risk to network stability. It is essential for users to update to the patched version to ensure the integrity of their systems. Utilizing tools like Vulert can help monitor for such vulnerabilities in real-time.
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FAQ
The vulnerability can lead to network instability and potential disruptions in Wi-Fi connections due to improper link ID management.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check if your application is affected.
Yes, the vulnerability has been patched in version 6.12.9-1 of the Linux package for both Debian 13 and Debian 14.
While there are no specific workarounds, it is crucial to plan for an update as soon as possible to mitigate the risk associated with this vulnerability.
Detailed information can be found in the Debian CVE database or by visiting the source link provided in the vulnerability details.
References
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