Vulnerability in Kernel: nfc_genl_dump_devices_done Segfault
Summary
GSD-2021-1002610: nfc: fix segfault in nfc_genl_dump_devices_done. Affects Kernel versions < ea55b3797878752aa076b118afb727dcf79cac34. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and interfaces with hardware devices. It manages system resources, facilitates communication between software and hardware, and ensures the stability and security of the system. The nfc (Near Field Communication) subsystem in the Kernel enables communication between devices in close proximity, such as smartphones and contactless payment systems. However, a vulnerability has been discovered in the nfc_genl_dump_devices_done function, which can lead to a segmentation fault (segfault) and potential security issues.
Vulnerability Detail
The nfc_genl_dump_devices_done function in the Kernel is susceptible to a segfault, which occurs when the program tries to access an invalid memory location. This vulnerability can be exploited by an attacker to crash the system or execute arbitrary code with elevated privileges. The exact impact and attack vectors are yet to be determined, but it is crucial to address this vulnerability to prevent potential security breaches.
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, applying the recommended fix by updating the Kernel to the latest version is the best course of action.
Conclusion
The vulnerability in the Kernel's nfc_genl_dump_devices_done function poses a potential security risk and should be addressed promptly. Updating the Kernel to the latest version that includes the fix is crucial to mitigate the vulnerability. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a crucial component of the Linux operating system that manages system resources, facilitates communication between software and hardware, and ensures the stability and security of the system.
The nfc (Near Field Communication) subsystem in the Kernel enables communication between devices in close proximity, such as smartphones and contactless payment systems.
A segfault, short for segmentation fault, occurs when a program tries to access an invalid memory location. It often leads to a program crash or unexpected behavior.
This vulnerability can be exploited by an attacker to crash the system or execute arbitrary code with elevated privileges, potentially leading to unauthorized access, data breaches, or system instability.
To mitigate this vulnerability, it is recommended to update the Linux Kernel to version v4.4.296 or later, which includes the necessary fix for the nfc_genl_dump_devices_done segfault.
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