Vulnerability in Kernel: arm_scmi Base Protocol
Summary
GSD-2022-1003337: firmware: arm_scmi: Fix list protocols enumeration in the base protocol. Affects Kernel versions >= b6f20ff8bd94ad34032804a60bab5ee56752007e, < 98342148a8cd242855d7e257f298c966c96dba9f. 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 essential functionality and acts as a bridge between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the overall stability and security of the system. The arm_scmi module in the Kernel is responsible for handling System Control and Management Interface (SCMI) protocols on ARM-based systems. These protocols enable communication between the operating system and firmware on ARM devices. However, a vulnerability has been identified in the base protocol of arm_scmi, which could potentially be exploited by attackers to compromise the system's integrity or availability.
Vulnerability Detail
The vulnerability in the arm_scmi base protocol allows for improper enumeration of list protocols. This could lead to various security issues, such as information disclosure, privilege escalation, or denial-of-service attacks. By exploiting this vulnerability, an attacker may be able to gain unauthorized access to sensitive information, elevate their privileges, or disrupt the normal operation of the system. The vulnerability was introduced in version v4.17 of the Linux Kernel and has been fixed in version v5.15.46.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable or restrict access to the arm_scmi module if it is not essential for the system's operation. This can be done by modifying the system's configuration files or using kernel command-line parameters. However, it is important to note that this workaround may impact the functionality of certain ARM-based devices or software components that rely on the arm_scmi module.
Conclusion
The vulnerability in the arm_scmi base protocol of the Kernel poses a potential security risk to ARM-based systems. It is crucial to update the Linux Kernel to the latest version to mitigate this vulnerability. Additionally, users can consider implementing the provided workaround if necessary. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The arm_scmi module is a component of the Linux Kernel that handles System Control and Management Interface (SCMI) protocols on ARM-based systems. These protocols enable communication between the operating system and firmware on ARM devices.
The vulnerability in the arm_scmi base protocol could potentially allow attackers to gain unauthorized access to sensitive information, elevate their privileges, or disrupt the normal operation of the system.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.46 or later. Instructions for updating the Kernel can be found in the official documentation.
As a temporary workaround, users can disable or restrict access to the arm_scmi module if it is not essential for the system's operation. However, this may impact the functionality of certain ARM-based devices or software components.
To check if your system is affected by this vulnerability, you can use the Vulert Playground (https://vulert.com/scanner) without any signup. Simply upload your manifest file (e.g., package-lock.json) to the playground, and it will analyze and alert you if your application is affected.
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