Vulnerability in Kernel: nfc_genl_dump_devices_done Segfault
Summary
GSD-2021-1002724: nfc: fix segfault in nfc_genl_dump_devices_done. Affects Kernel versions < d89e4211b51752daf063d638af50abed2fd5f96d. 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 acts as an interface between hardware and software. It manages system resources, facilitates communication between different components, and enables the execution of user programs. The NFC (Near Field Communication) subsystem within the Kernel allows devices to communicate wirelessly over short distances. It is commonly used for contactless payments, data transfer, and other applications. However, a vulnerability has been discovered in the nfc_genl_dump_devices_done function, which can lead to a segmentation fault (segfault) and potential system instability.
Vulnerability Detail
The nfc_genl_dump_devices_done function in the Kernel is susceptible to a segmentation fault, which occurs when a program tries to access memory it is not allowed to access. This vulnerability can be triggered by a malicious actor or through certain system conditions, potentially leading to a denial-of-service (DoS) scenario or arbitrary code execution. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been addressed in the Linux Kernel version v5.15.10 by commit d89e4211b51752daf063d638af50abed2fd5f96d.
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, implementing general security best practices such as restricting access to vulnerable systems, applying network segmentation, and regularly updating the Kernel can help mitigate the risk of exploitation.
Conclusion
The vulnerability in the Kernel's nfc_genl_dump_devices_done function can result in a segmentation fault and potential system instability. It is crucial to update the Linux Kernel to version v5.15.10 or later to mitigate this vulnerability. Regularly applying security patches and following best practices can help ensure the overall security of the system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that provides core functionality and acts as an interface between hardware and software.
NFC (Near Field Communication) is a wireless communication technology that allows devices to exchange data over short distances.
A segmentation fault (segfault) occurs when a program tries to access memory it is not allowed to access, leading to a crash or system instability.
This vulnerability can potentially lead to a denial-of-service (DoS) scenario or arbitrary code execution, depending on the attacker's capabilities and system conditions.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.10 or later.
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