NFC: Reorder Logic in nfc_{un,}register_device - Kernel
Summary
UVI-2021-1002259: NFC: reorder the logic in nfc_{un,}register_device. Affects Kernel versions >= be055b2f89b5842f41363b5655a33dffb51a8294, < 307d2e6cebfca9d92f86c8e2c8e3dd4a8be46ba6. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities and services to enable the proper functioning of the system. NFC (Near Field Communication) is a technology that allows devices to communicate and exchange data wirelessly over short distances. The nfc_{un,}register_device functions in the Kernel are responsible for registering and unregistering NFC devices. These functions play a vital role in managing NFC devices and their associated resources.
Vulnerability Detail
The vulnerability identified as UVI-2021-1002259 in the Kernel's nfc_{un,}register_device functions arises from a logic flaw. The logic in these functions is not properly ordered, which can lead to potential security vulnerabilities. The exact impact and attack plausibility of this vulnerability have not been proven yet. However, it is essential to address this issue to ensure the security and stability of the NFC functionality in the Kernel. The vulnerability was introduced in version v3.10 of the Kernel and has been fixed in version v5.4.162.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the Kernel's nfc_{un,}register_device functions can potentially expose the NFC functionality to security risks. It is crucial to update the Kernel to version v5.4.162 or later to ensure the vulnerability is patched. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The exact impact of this vulnerability is not yet proven. However, it has the potential to expose the NFC functionality in the Kernel to security risks. It is crucial to address this vulnerability to prevent any potential exploitation.
You can check if your system is affected by this vulnerability by examining the version of the Kernel installed. If your Kernel version is earlier than v5.4.162, it is recommended to update to the latest stable version to ensure the vulnerability is patched.
As of now, there are no known exploits for this vulnerability. However, it is always advisable to address vulnerabilities promptly to mitigate any potential risks.
Unfortunately, there are no known temporary workarounds for this vulnerability. It is recommended to update the Kernel to the latest stable version as soon as possible to ensure the vulnerability is fixed.
You can find more information about this vulnerability in the official Linux Kernel repository. The vulnerability details are available in the commit history and the associated issue tracker.
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