Vulnerability in Kernel package: cfg80211: call cfg80211_leave_ocb when switching away from OCB
Summary
UVI-2021-1001116: cfg80211: call cfg80211_leave_ocb when switching away from OCB. Affects Kernel versions < f2c027a7750f2d7a35cd95858163cce9aae4c1aa. No fix is published. How to fix ↓
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Background
The Kernel package is a fundamental component of the Linux operating system. It provides the core functionality and interfaces for various hardware devices, drivers, and system services. The cfg80211 module within the Kernel package is responsible for managing wireless LAN configuration and communication. It allows users to connect to wireless networks, configure network parameters, and handle wireless network events. However, a vulnerability has been identified 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 enables direct communication between devices 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 OCB-related resources and state. 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
No specific workaround has been provided for this vulnerability.
Conclusion
The vulnerability in the Kernel package's cfg80211 module, which fails to call cfg80211_leave_ocb when switching away from OCB, can potentially lead to security risks. It is recommended to update the Linux Kernel to version v5.4.129 or later to address this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The cfg80211 module is a component of the Kernel package that manages wireless LAN configuration and communication.
OCB (Outside Context of a BSS) mode is a wireless LAN mode that enables direct communication between devices without the need for an access point.
The impact of this vulnerability is currently unknown, as the actual attack plausibility has not been proven. However, it could potentially lead to resource leaks and security risks.
To fix this vulnerability, update the Linux Kernel to version v5.4.129 or later, which includes the necessary fix commit.
The updated Kernel version can be obtained from the official Linux Kernel repository: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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