USB: max-3421: Prevent Corruption of Freed Memory in Linux Kernel
Summary
UVI-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 managing hardware resources, facilitating communication between software and hardware components. The USB subsystem in the Linux Kernel enables the use of USB devices and handles their interactions with the system. However, a vulnerability has been discovered in the USB driver 'max-3421' that can lead to the corruption of freed memory.
Vulnerability Detail
The vulnerability in the 'max-3421' USB driver arises from improper handling of freed memory. When certain USB operations are performed, the driver fails to properly manage memory deallocation, resulting in a situation where freed memory can be accessed and modified. An attacker could potentially exploit this vulnerability to execute arbitrary code, escalate privileges, or cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable the 'max-3421' USB driver if it is not required for their system. This can be achieved by blacklisting the driver module or removing it from the kernel configuration. However, this workaround should only be considered if the driver is not essential for the system's functionality.
Conclusion
The 'max-3421' USB driver in the Linux Kernel is vulnerable to memory corruption. To mitigate this vulnerability, it is crucial to update the Kernel to the recommended version or apply the provided workaround. For further assistance and support in vulnerability remediation, please contact DevNack.com.
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FAQ
The Linux Kernel is an open-source operating system kernel that provides essential functionality for managing hardware resources and facilitating communication between software and hardware components.
The 'max-3421' USB driver is a component of the Linux Kernel's USB subsystem. It enables the use of USB devices and handles their interactions with the system.
The impact of this vulnerability can vary depending on the attacker's capabilities and intentions. It could potentially lead to the execution of arbitrary code, privilege escalation, or denial-of-service attacks.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.9.277 or later. This will ensure that the vulnerable code is replaced with the patched version.
Yes, as a temporary workaround, users can disable the 'max-3421' USB driver if it is not required for their system. This can be achieved by blacklisting the driver module or removing it from the kernel configuration.
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