Vulnerability in Kernel: arm_scmi - Fix list protocols enumeration in the base protocol
Summary
GSD-2022-1003881: firmware: arm_scmi: Fix list protocols enumeration in the base protocol. Affects Kernel versions >= b6f20ff8bd94ad34032804a60bab5ee56752007e, < 444a2d27fe9867d0da4b28fc45b793f32e099ab8. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities and drivers for various devices. The arm_scmi module within the Kernel is specifically designed for ARM-based systems and enables communication with System Control and Management Interface (SCMI) firmware. SCMI is responsible for managing power, performance, and other system-related functions on ARM devices. However, a vulnerability has been identified in the base protocol of arm_scmi, which could potentially lead to security issues.
Vulnerability Detail
The vulnerability in the arm_scmi base protocol allows an attacker to enumerate the list of protocols, potentially exposing sensitive information about the system's capabilities and configurations. This information could be leveraged to launch further attacks or gain unauthorized access to the system. The vulnerability was introduced in version v4.17 of the Linux Kernel and has been fixed in version v4.19.247. The fix ensures that the list protocols enumeration is performed securely and does not leak sensitive information.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.19.247 or later. This can be done by downloading the latest stable version of the Kernel from the official repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and following the installation instructions provided. It is important to ensure that the updated Kernel is compatible with the specific hardware and software environment.
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Workaround
There is no specific workaround mentioned for this vulnerability. However, as a general security practice, it is advisable to follow best practices such as keeping the system and software up to date, implementing proper access controls, and regularly monitoring for any suspicious activities.
Conclusion
In conclusion, the vulnerability in the Kernel's arm_scmi base protocol allows for the enumeration of protocols, potentially leading to unauthorized access and further security risks. It is crucial to update the Linux Kernel to the fixed version to ensure the security and integrity of the system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows an attacker to enumerate the list of protocols in the arm_scmi base protocol, potentially exposing sensitive information and opening avenues for further attacks.
You can use tools like Vulert (https://vulert.com) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities.
At the time of this report, there is no known exploit available for this vulnerability. However, it is crucial to apply the recommended fix to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely if an attacker can establish a connection to the affected system.
The primary solution is to update the Linux Kernel to the fixed version. However, if updating is not feasible, implementing additional security measures such as network segmentation and access controls can help mitigate the risk to some extent.
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