Vulnerability in Kernel: arm64: dts: qcom: sc7280-qcard: Configure CTS pin to bias-bus-hold for bluetooth
Summary
GSD-2022-1002718: arm64: dts: qcom: sc7280-qcard: Configure CTS pin to bias-bus-hold for bluetooth. Affects Kernel versions < a34b407ef8969a3ba986cc1f84556c8b2d1cc1cd. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities and device drivers for various hardware components. The vulnerability in question affects the arm64 architecture and specifically the device tree source (DTS) for the Qualcomm sc7280-qcard. This vulnerability pertains to the configuration of the Clear To Send (CTS) pin for Bluetooth, which is not set to bias-bus-hold. This misconfiguration could potentially lead to security vulnerabilities in Bluetooth communication.
Vulnerability Detail
The vulnerability arises from the incorrect configuration of the CTS pin for Bluetooth in the sc7280-qcard device tree. By not setting the CTS pin to bias-bus-hold, potential security vulnerabilities may be introduced in Bluetooth communication. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v5.18.3 by commit a34b407ef8969a3ba986cc1f84556c8b2d1cc1cd.
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
In conclusion, the vulnerability in the Kernel's arm64 architecture, specifically in the sc7280-qcard device tree, can lead to potential security vulnerabilities in Bluetooth communication. It is crucial to update the Linux Kernel to version v5.18.3 or later to mitigate 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 manages system resources and facilitates communication between hardware and software.
A device tree source (DTS) is a human-readable description of a hardware platform, used by the Kernel to configure and initialize hardware devices.
The sc7280-qcard is a specific device tree for the Qualcomm sc7280 chipset, which provides configuration information for the Kernel to support the hardware.
The Clear To Send (CTS) pin is a control signal used in serial communication protocols, including Bluetooth, to manage data flow between devices.
To update the Linux Kernel, you can pull the latest changes from the official Linux Kernel repository and then recompile and reinstall the Kernel on the affected system.
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