USB Gadget f_fs Vulnerability in Linux Kernel
Summary
GSD-2022-1000033: usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear. Affects Kernel versions >= 5e33f6fdf735cda1d4580fe6f1878da05718fe73, < 240fc586e83d645912accce081a48aa63a45f6ee. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality for hardware abstraction, process management, memory management, and device drivers. The f_fs module within the USB gadget subsystem allows the kernel to act as a USB device. This vulnerability affects the f_fs module in the Linux Kernel.
Vulnerability Detail
The vulnerability in the f_fs module of the USB gadget subsystem arises from a failure to clear the ffs_eventfd in the ffs_data_clear function. This flaw could potentially be exploited by an attacker to trigger a denial-of-service (DoS) condition or execute arbitrary code with elevated privileges. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround provided for this vulnerability.
Conclusion
The USB Gadget f_fs vulnerability in the Linux Kernel's f_fs module can potentially lead to a denial-of-service (DoS) condition or arbitrary code execution. It is crucial to update the Linux Kernel to version v5.4.170 or later to mitigate this vulnerability. For further assistance and support in vulnerability remediation, please contact DevNack.com.
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FAQ
The USB gadget subsystem in the Linux Kernel allows the kernel to act as a USB device, enabling various USB functionalities.
The impact of this vulnerability could range from a denial-of-service (DoS) condition to arbitrary code execution with elevated privileges.
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No known exploits for this vulnerability have been reported at the moment.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) entry GSD-2022-1000033 (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000033.json).
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