Vulnerability in Kernel package: cfg80211: call cfg80211_leave_ocb when switching away from OCB
Summary
GSD-2021-1001098: cfg80211: call cfg80211_leave_ocb when switching away from OCB. Affects Kernel versions < d3a0d82d3f4747866f80d3f0732156c4b85226d2. No fix is published. How to fix ↓
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Background
The Kernel package is a crucial component of the Linux operating system. It provides the core functionality and interfaces for various hardware devices, including networking. The cfg80211 module within the Kernel package is responsible for managing wireless LAN configuration. It allows users to connect to wireless networks and provides the necessary APIs for wireless drivers. However, a vulnerability has been discovered in the cfg80211 module that can lead to potential security risks.
Vulnerability Detail
The vulnerability in the cfg80211 module occurs when switching away from OCB (Outside Context of a BSS) mode. OCB is a wireless LAN 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 cfg80211_leave_ocb function, which is responsible for cleaning up OCB-related resources. This oversight can result in resource leaks 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.
Conclusion
The vulnerability in the cfg80211 module of the Kernel package can lead to potential security risks when switching away from OCB mode. It is recommended to update the Linux Kernel package to version v4.9.274 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The cfg80211 module is a component of the Kernel package that manages wireless LAN configuration and provides APIs for wireless drivers.
OCB (Outside Context of a BSS) mode is a wireless LAN mode that allows devices to communicate directly with each other without the need for an access point.
The potential risks of this vulnerability include resource leaks and potential security vulnerabilities, although the impact and attack plausibility have not been proven yet.
To fix this vulnerability, update the Linux Kernel package to version v4.9.274 or later, which includes the necessary fix for the cfg80211 module.
For more information about this vulnerability, you can refer to the source link provided in the vulnerability details.
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