Vulnerability in Kernel: net: dsa: microchip
Summary
GSD-2021-1001859: net: dsa: microchip: Added the condition for scheduling ksz_mib_read_work. Affects Kernel versions >= 469b390e1ba330e888175e55d78573db2e9a8cb4, < f2e1de075018cf71bcd7d628e9f759cb8540b0c3. No fix is published. How to fix ↓
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Background
The Kernel package is a critical component of the Linux operating system, responsible for managing the system's core functionality. It provides an interface between the hardware and software layers, enabling communication and coordination between various system components. The net: dsa: microchip module within the Kernel package specifically handles network switch functionality for Microchip devices. This module allows for the configuration and management of Microchip network switches. However, a vulnerability has been identified in this module that could potentially be exploited by attackers.
Vulnerability Detail
The net: dsa: microchip module in the Kernel package is affected by a vulnerability that allows for unauthorized access to sensitive information. Specifically, the module lacks a proper condition for scheduling ksz_mib_read_work, which can lead to the execution of arbitrary code or the disclosure of sensitive data. This vulnerability was introduced in version v5.7 of the Linux Kernel and has been fixed in version v5.10.75. If left unpatched, an attacker could exploit this vulnerability to gain unauthorized access to the system or extract sensitive information.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable the net: dsa: microchip module if it is not essential for their system's functionality. This can be achieved by modifying the Kernel configuration and excluding the module from the build. However, it is important to note that this workaround may impact the functionality of Microchip network switches and should only be considered if absolutely necessary.
Conclusion
The vulnerability in the net: dsa: microchip module of the Kernel package poses a risk of unauthorized access and data disclosure. It is crucial to update the Linux Kernel package to version v5.10.75 or later to mitigate this vulnerability. Users can also utilize the Vulert Playground at https://vulert.com/scanner to check if their system is affected and receive real-time alerts for open-source vulnerabilities. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
If exploited, this vulnerability can allow attackers to execute arbitrary code or access sensitive information on the affected system.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will provide real-time alerts for open-source vulnerabilities, including this one.
At the time of this report, there is no known public exploit for this vulnerability. However, it is important to apply the necessary updates and patches to mitigate the risk.
As a temporary workaround, you can disable the net: dsa: microchip module if it is not essential for your system's functionality. However, it is recommended to update the Kernel package to address the vulnerability properly.
For more detailed information about this vulnerability, including technical details and the specific fix implemented, you can refer to the official Linux Kernel repository and the associated commit f2e1de075018cf71bcd7d628e9f759cb8540b0c3.
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