USB: max-3421 Memory Corruption Vulnerability in Linux Kernel
Summary
GSD-2021-1001435: usb: max-3421: Prevent corruption of freed memory. Affects Kernel versions >= 2d53139f31626bad6f8983d8e519ddde2cbba921, < ae3209b9fb086661ec1de4d8f4f0b951b272bbcd. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality for hardware interaction, process management, and system resource allocation. The USB subsystem in the Linux Kernel enables communication with USB devices, allowing users to connect and utilize various peripherals. However, a vulnerability has been discovered in the max-3421 USB driver, which can lead to memory corruption.
Vulnerability Detail
The vulnerability in the max-3421 USB driver can result in the corruption of freed memory. This can occur when certain operations are performed on USB devices, potentially leading to a variety of security issues. While the exact impact and attack vectors have not been proven, this vulnerability poses a risk to the integrity and stability of the system. The vulnerability was introduced in version v3.16 of the Linux Kernel and has been fixed in version v4.9.277.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can disable the use of USB devices or restrict their usage to trusted devices only. This can be achieved by modifying the system configuration or using tools that manage USB device permissions. However, this workaround may impact the functionality and usability of the system.
Conclusion
The USB: max-3421 Memory Corruption Vulnerability in the Linux Kernel can lead to memory corruption and potential security issues. It is crucial to update the Kernel to version v4.9.277 or later to mitigate this vulnerability. Users can also apply the workaround of restricting or disabling USB device usage. For further assistance and support in addressing this vulnerability, please contact DevNack.com.
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FAQ
The impact of this vulnerability can vary depending on the specific attack vectors and system configuration. It could potentially lead to unauthorized access, data corruption, or system instability.
You can use tools like Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert Playground allows you to analyze your manifest file, such as package-lock.json, and provides real-time alerts for open-source vulnerabilities.
At the time of this report, no known exploits for this vulnerability have been disclosed. However, it is important to apply the recommended fixes to mitigate any potential risks.
Yes, you can apply the workaround mentioned earlier to restrict or disable the use of USB devices. However, it is still recommended to update the Kernel as soon as possible to ensure comprehensive security.
For more details about this vulnerability, you can refer to the source information provided by the Cloud Security Alliance's GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001435.json).
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