NFC: Reorder Logic in nfc_{un,}register_device - Linux Kernel
Summary
GSD-2021-1002227: NFC: reorder the logic in nfc_{un,}register_device. Affects Kernel versions >= be055b2f89b5842f41363b5655a33dffb51a8294, < ff169909eac9e00bf1aa0af739ba6ddfb1b1d135. 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 services and functions to enable the proper functioning of hardware, software, and user applications. NFC (Near Field Communication) is a technology that allows devices to communicate wirelessly over short distances. The nfc_{un,}register_device functions in the Linux Kernel are responsible for registering and unregistering NFC devices. These functions play a crucial role in enabling NFC functionality on Linux-based systems.
Vulnerability Detail
The vulnerability identified as GSD-2021-1002227 in the Linux Kernel's NFC module involves a logic flaw in the nfc_{un,}register_device functions. The logic in these functions is reordered, which can lead to potential security vulnerabilities. While the exact impact and attack plausibility have not been proven, this vulnerability has the potential to be exploited by malicious actors. It is important to note that this vulnerability has been fixed in the Linux Kernel version v4.9.291 by commit ff169909eac9e00bf1aa0af739ba6ddfb1b1d135. However, it was introduced in version v3.10 by commit be055b2f89b5842f41363b5655a33dffb51a8294.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.9.291 or later. This can be done by obtaining the latest version of the Linux Kernel source code from the official repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it according to the provided instructions. Alternatively, users can wait for their Linux distribution to release an updated package containing the fixed version of the Linux Kernel.
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Workaround
There is no specific workaround mentioned for this vulnerability. The recommended course of action is to apply the fix by updating the Linux Kernel to the patched version.
Conclusion
In conclusion, the vulnerability GSD-2021-1002227 in the Linux Kernel's NFC module involves a logic flaw in the nfc_{un,}register_device functions. It is important to update the Linux Kernel to version v4.9.291 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Linux Kernel is the core component of the Linux operating system. It provides essential services and functions to enable the proper functioning of hardware, software, and user applications.
NFC (Near Field Communication) is a technology that allows devices to communicate wirelessly over short distances.
The nfc_{un,}register_device functions in the Linux Kernel are responsible for registering and unregistering NFC devices. These functions play a crucial role in enabling NFC functionality on Linux-based systems.
The exact impact of this vulnerability is not proven, but it has the potential to be exploited by malicious actors. Reordering the logic in the nfc_{un,}register_device functions can introduce security vulnerabilities.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.9.291 or later. This can be done by obtaining the latest version of the Linux Kernel source code and compiling it according to the provided instructions.
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