Vulnerability in Kernel package: cfg80211: call cfg80211_leave_ocb when switching away from OCB
Summary
GSD-2021-1001123: cfg80211: call cfg80211_leave_ocb when switching away from OCB. Affects Kernel versions < 6a07cf36064afb14849d8e038fcca3538fe94bd4. No fix is published. How to fix ↓
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Background
The Kernel package is a fundamental component of the Linux operating system that provides the core functionality and interfaces for various hardware devices and software components. It acts as a bridge between the hardware and the user-space applications, facilitating communication and resource management. The cfg80211 module within the Kernel package is responsible for handling wireless network configuration and management. It provides APIs for interacting with wireless devices, including OCB (Operating Class B) mode, which allows devices to operate in a synchronized manner without an access point.
However, a vulnerability has been identified in the cfg80211 module that can be exploited when switching away from OCB mode. This vulnerability could potentially lead to security breaches and compromise the integrity and confidentiality of the system. The impact and attack plausibility of this vulnerability have not been proven yet.
Vulnerability Detail
The vulnerability in the cfg80211 module arises from a failure to call the cfg80211_leave_ocb function when switching away from OCB mode. This omission can result in the system not properly cleaning up resources and state associated with OCB mode, leading to potential security risks. An attacker may be able to exploit this vulnerability to gain unauthorized access, execute arbitrary code, or cause a denial of service.
It is important to note that the actual impact and attack vectors of this vulnerability have not been fully demonstrated or confirmed.
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 Kernel package's cfg80211 module, which fails to call cfg80211_leave_ocb when switching away from OCB mode, poses potential security risks. To mitigate this vulnerability, it is crucial to update the Linux Kernel package to version v5.10.47 or later. This update ensures that the necessary cleanup of resources is performed when switching away from OCB mode. For further assistance or support in addressing this vulnerability, please contact DevNack.com.
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FAQ
The Kernel package is a core component of the Linux operating system that provides essential functionality and interfaces for hardware devices and software components.
The cfg80211 module is a part of the Kernel package that handles wireless network configuration and management, including support for OCB mode.
OCB (Operating Class B) mode is a wireless network operation mode that allows devices to operate in a synchronized manner without an access point.
This vulnerability could potentially lead to unauthorized access, execution of arbitrary code, or denial of service attacks.
No, the actual impact and attack vectors of this vulnerability have not been fully demonstrated or confirmed.
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