USB Gadget f_sourcesink Isoc Transfer Vulnerability in Linux Kernel

Kernel Updated 02 Oct 2025

Summary

18/02/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1000098: usb: gadget: f_sourcesink: Fix isoc transfer for USB_SPEED_SUPER_PLUS. Affects Kernel versions >= 8cd5f45c1b769e3e9e0f4325dd08b6c3749dc7ee, < 973e0d9e5fcd975bd95ddf544b279f764940b835. No fix is published. How to fix ↓

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Background

The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. The USB gadget subsystem in the Linux Kernel allows the system to act as a USB device, enabling various USB functionalities. One of the components in this subsystem is f_sourcesink, which handles isochronous (isoc) transfers. Isoc transfers are used for real-time data streaming and require precise timing. However, a vulnerability has been discovered in the f_sourcesink component that affects isoc transfers when operating at USB_SPEED_SUPER_PLUS.

Vulnerability Detail

The vulnerability in f_sourcesink for USB_SPEED_SUPER_PLUS in the Linux Kernel can lead to incorrect isoc transfer handling. This can result in data corruption or loss, impacting the functionality of USB devices that rely on isoc transfers at USB_SPEED_SUPER_PLUS. An attacker could potentially exploit this vulnerability to manipulate data or disrupt the operation of affected USB devices. The vulnerability was introduced in Linux Kernel version v4.14.237 and has been fixed in version v4.14.265.

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.

Conclusion

The USB Gadget f_sourcesink Isoc Transfer Vulnerability in the Linux Kernel can lead to data corruption or loss for USB devices relying on isoc transfers at USB_SPEED_SUPER_PLUS. It is crucial to update the Linux Kernel to version v4.14.265 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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