usbnet: Sanity Check for maxpacket in Linux Kernel
Summary
GSD-2021-1002056: usbnet: sanity check for maxpacket. Affects Kernel versions < 693ecbe8f799405f8775719deedb1f76265d375a. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system. It provides essential functionality and interfaces for various hardware devices and software components. The usbnet module in the Linux Kernel is responsible for handling USB networking devices. It allows devices such as USB Ethernet adapters to be recognized and used by the system. The maxpacket parameter in usbnet is used to specify the maximum packet size that the device can handle. This vulnerability relates to a missing sanity check for the maxpacket value, which could lead to potential security issues.
Vulnerability Detail
The vulnerability in usbnet arises from the absence of a proper sanity check for the maxpacket value. This could allow an attacker to manipulate the maxpacket parameter, potentially leading to buffer overflows, data corruption, or other security vulnerabilities. By providing a maliciously crafted maxpacket value, an attacker could 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 workaround, users can disable the usbnet module if it is not required for their system. This can be done by blacklisting the module or removing it from the kernel configuration. However, this workaround should only be considered if the usbnet functionality is not essential for the system's operation.
Conclusion
The usbnet module in the Linux Kernel is vulnerable to a missing sanity check for the maxpacket value. This could potentially lead to security issues such as buffer overflows, data corruption, or arbitrary code execution. It is recommended to update the Linux Kernel to version v5.10.77 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
usbnet is a module in the Linux Kernel that handles USB networking devices, allowing them to be recognized and used by the system.
The maxpacket parameter in usbnet is used to specify the maximum packet size that the USB networking device can handle.
The impact of this vulnerability could include buffer overflows, data corruption, arbitrary code execution, privilege escalation, or denial-of-service conditions.
No, the impact and attack plausibility of this vulnerability have not been proven yet.
To fix this vulnerability, users should update their Linux Kernel to version v5.10.77 or later.
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