Vulnerability in Kernel: cfg80211: call cfg80211_leave_ocb when switching away from OCB
Summary
GSD-2021-1001104: cfg80211: call cfg80211_leave_ocb when switching away from OCB. Affects Kernel versions < cb44de1ae03374b9d5c5b87247cef35f0eefdc04. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionalities and acts as an interface between the hardware and software layers. It manages system resources, facilitates communication between different software components, and enables the execution of user applications. The cfg80211 module within the Kernel is responsible for handling wireless network configuration and management. It provides various functions and interfaces for interacting with wireless devices and networks. However, a vulnerability has been identified in the cfg80211 module that can lead to potential security risks.
Vulnerability Detail
The identified vulnerability in the cfg80211 module occurs when switching away from OCB (Outside Context of a BSS) mode. OCB is a wireless network mode that allows devices to communicate directly with each other without the need for an access point. When switching away from OCB, the cfg80211 module fails to call the necessary function cfg80211_leave_ocb, which is responsible for cleaning up resources and ensuring a proper transition. This oversight can result in resource leaks, inconsistent state, and potential security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet.
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. It is advised to apply the fix by updating the Kernel to the recommended version.
Conclusion
In conclusion, a vulnerability has been identified in the Kernel's cfg80211 module that can lead to potential security risks when switching away from OCB mode. It is crucial to update the Kernel to the recommended version to address this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that provides core functionalities and acts as an interface between the hardware and software layers.
The cfg80211 module is responsible for handling wireless network configuration and management in the Linux Kernel.
OCB (Outside Context of a BSS) is a wireless network mode that allows devices to communicate directly with each other without the need for an access point.
The vulnerability can result in resource leaks, inconsistent state, and potential security vulnerabilities.
To fix this vulnerability, update the Linux Kernel to version v4.14.238 or later.
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