Permission check bug in net/nfc/rawsock.c
Summary
GSD-2021-1000885: net/nfc/rawsock.c: fix a permission check bug. Affects Kernel versions < f3ed12af6bbbaf79eddb0ae14656b8ecacea74f0. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system that serves as the foundation for various Linux distributions. It provides essential functionality and interfaces for hardware, software, and user applications. The net/nfc/rawsock.c file is part of the kernel's NFC subsystem and is responsible for handling raw socket operations for NFC communication. Raw sockets allow direct access to network protocols, bypassing higher-level abstractions. This vulnerability affects the permission check mechanism in the rawsock.c file, potentially leading to unauthorized access and misuse of NFC functionality.
Vulnerability Detail
The vulnerability in net/nfc/rawsock.c arises from a permission check bug. The specific technical details of the bug have not been disclosed in the provided information. However, it is mentioned that the bug has been fixed in Linux Kernel version v5.4.126 by commit f3ed12af6bbbaf79eddb0ae14656b8ecacea74f0. The impact and attack plausibility of this vulnerability have not been proven yet. It is crucial to update to the fixed version to mitigate any potential risks associated with this vulnerability.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned in the provided information. However, it is advisable to prioritize updating to the fixed version of the Linux Kernel as soon as possible.
Conclusion
In conclusion, the net/nfc/rawsock.c file in the Linux Kernel is affected by a permission check bug. While the specific impact and attack plausibility are not proven, it is crucial to update to the fixed version of the Linux Kernel (v5.4.126 or later) to mitigate any potential risks. For further support and assistance in vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is not specified in the provided information. However, since it involves a permission check bug, it could potentially allow unauthorized access and misuse of NFC functionality.
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 monitoring and alerts for open-source vulnerabilities, including this one.
The provided information does not mention any known exploits for this vulnerability. However, it is always recommended to stay updated with the latest security patches to mitigate any potential risks.
The fix for this vulnerability can be found in the Linux Kernel version v5.4.126. For more detailed information about the fix, you can refer to the commit f3ed12af6bbbaf79eddb0ae14656b8ecacea74f0 in the Linux Kernel repository.
You can find more information about the Linux Kernel on the official website of the Linux Kernel Organization (https://www.kernel.org/). The website provides documentation, release notes, and other resources related to the Linux Kernel.
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