Link ID Management Vulnerability in Linux Kernel - CVE-2024-57898
Summary
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 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, providing essential services for hardware management and system processes. It is known for its stability, performance, and security features. However, vulnerabilities can arise, impacting its functionality and security. CVE-2024-57898 specifically affects the cfg80211 subsystem, which is responsible for managing wireless networking in Linux. This vulnerability can lead to improper link management during deletion processes, potentially causing system warnings and instability.
Vulnerability Detail
CVE-2024-57898 is a vulnerability in the Linux kernel's cfg80211 subsystem, where the link ID is removed from the valid_links bitmap prematurely during link deletion. This 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. The vulnerability originates from the order of operations in the link deletion process, which does not account for the requirements of all functions involved in link management. The ramifications include potential system warnings and instability in wireless networking operations.
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.
Conclusion
CVE-2024-57898 is a significant vulnerability in the Linux kernel that affects wireless link management. It is crucial for users to update their systems to the latest patched versions to ensure stability and security. Regular monitoring for vulnerabilities using tools like Vulert can help maintain the integrity of your software.
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FAQ
CVE-2024-57898 is a vulnerability in the Linux kernel related to improper management of link IDs during wireless link deletion.
This vulnerability can lead to system warnings and potential instability in wireless networking operations.
The vulnerability affects Linux kernel versions in Debian 11, 12, and 13. Check your version to determine if you are impacted.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
While there are no specific workarounds, it is advisable to monitor for updates and apply them as soon as possible to mitigate risks.
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