mac80211-hwsim: Late Beacon Hrtimer Handling Vulnerability
Summary
GSD-2021-1001648: mac80211-hwsim: fix late beacon hrtimer handling. Affects Kernel versions >= 01e59e467ecf976c782eecd4dc99644802cc60e2, < 2c204cf594df3b9468368dc9d0b24d482d93cda7. No fix is published. How to fix ↓
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Background
The mac80211-hwsim package is a software simulation of the mac80211 wireless stack in the Linux kernel. It provides a virtual environment for testing and developing wireless drivers and applications. The package emulates wireless devices and allows users to create virtual wireless networks. The vulnerability in mac80211-hwsim relates to the handling of late beacon hrtimers.
Vulnerability Detail
The late beacon hrtimer handling vulnerability in mac80211-hwsim can potentially lead to security issues. When a beacon hrtimer fires late, it can cause timing-related problems in the virtual wireless network. This could result in incorrect synchronization between devices, leading to performance degradation or even denial of service. The vulnerability was introduced in version v3.9 of the Linux Kernel and has been fixed in version v5.10.71.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The late beacon hrtimer handling vulnerability in mac80211-hwsim can have significant implications for the performance and stability of virtual wireless networks. It is crucial to update the Linux Kernel to the fixed version to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
mac80211-hwsim is a software simulation of the mac80211 wireless stack in the Linux kernel. It provides a virtual environment for testing and developing wireless drivers and applications.
A late beacon hrtimer refers to a timing mechanism used in the mac80211-hwsim package to schedule beacon transmissions in a virtual wireless network.
The vulnerability can lead to incorrect synchronization between devices in the virtual wireless network, resulting in performance degradation or denial of service.
To fix the vulnerability, update the Linux Kernel to version v5.10.71 or later.
No specific workaround has been mentioned for this vulnerability.
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