USB: usbfs: Don't WARN about excessively large memory allocations in Kernel
Summary
GSD-2021-1000607: USB: usbfs: Don't WARN about excessively large memory allocations. Affects Kernel versions < 8d83f109e920d2776991fa142bb904d985dca2ed. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functionality for the proper functioning of the system. The USB subsystem in the Kernel handles USB devices and their interactions with the system. It allows users to connect and use USB devices such as keyboards, mice, and storage devices. However, a vulnerability has been discovered in the usbfs module of the Kernel, which can lead to excessively large memory allocations.
Vulnerability Detail
The vulnerability in the usbfs module of the Kernel allows an attacker to trigger excessively large memory allocations, potentially leading to denial of service (DoS) attacks or system instability. By exploiting this vulnerability, an attacker could consume a significant amount of system memory, causing the system to become unresponsive or crash. This vulnerability can be exploited by sending specially crafted USB requests to the system. It is important to note that the impact and attack plausibility of this vulnerability have not yet been proven.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability. However, users can mitigate the risk by updating their Kernel to the fixed version.
Conclusion
The vulnerability in the usbfs module of the Kernel can lead to excessively large memory allocations, potentially resulting in denial of service (DoS) attacks or system instability. It is crucial for users to update their Kernel to the fixed version to mitigate the risk. Regularly updating the Kernel is recommended to ensure the system is protected against known vulnerabilities. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can range from denial of service (DoS) attacks to system instability. An attacker could consume a significant amount of system memory, causing the system to become unresponsive or crash.
You can use Vulert's playground (https://vulert.com/scanner) 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 in the software.
Yes, the vulnerability has been fixed in Linux Kernel version v5.10.42 by commit 8d83f109e920d2776991fa142bb904d985dca2ed. Users should update their Kernel to the latest version to apply the patch.
There are no known exploits for this vulnerability at the moment. However, it is important to stay updated with the latest security patches to protect against potential exploits.
For further support on vulnerability remediation, you can contact info@devnack.com. They can provide assistance and guidance in addressing this vulnerability.
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