Vulnerability in Kernel: nfc_genl_dump_devices_done Segfault
Summary
GSD-2021-1002631: nfc: fix segfault in nfc_genl_dump_devices_done. Affects Kernel versions < 6644989642844de830f9b072cd65c553cb55946c. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities and services to ensure the proper functioning of the system. One of the components within the Kernel is the nfc (Near Field Communication) module, which enables communication between devices in close proximity. NFC technology 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 vulnerability in the nfc_genl_dump_devices_done function within the Kernel can be exploited to trigger a segfault. A segfault occurs when a program tries to access a memory location that it is not allowed to access, resulting in a crash or system instability. An attacker could potentially exploit this vulnerability to crash the system or execute arbitrary code with elevated privileges. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability has been addressed in the Linux Kernel version v4.14.259 by commit 6644989642844de830f9b072cd65c553cb55946c.
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. The recommended approach is to update the Kernel to the fixed version as mentioned in the 'how_to_fix' section.
Conclusion
The vulnerability in the nfc_genl_dump_devices_done function within the Kernel can lead to system instability and potential code execution with elevated privileges. It is crucial to update the Linux Kernel to version v4.14.259 or later to mitigate this vulnerability. Keeping the Kernel up to date is essential for maintaining the security and stability of the system. 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 can range from system instability and crashes to potential execution of arbitrary code with elevated privileges.
The details regarding remote exploitation have not been provided. However, it is always recommended to apply security patches and updates to mitigate potential remote exploitation risks.
There is no information available regarding active exploitation of this vulnerability at the moment. However, it is advisable to apply the necessary updates to prevent any potential exploitation.
The vulnerability is present in versions of the Kernel prior to v4.14.259. It has been fixed in the mentioned version and subsequent releases.
For more detailed information about this vulnerability, you can refer to the source provided in the GSD database: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002631.json
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