Vulnerability Found in the USB Gadget Linux Kernel Subsystem

Vulnerability Found in the USB Gadget Linux Kernel Subsystem

Written By
L
LinuxStoney
Dec 17, 2021

A vulnerability (CVE-2021-39685) has been identified in USB Gadget, a subsystem of the Linux kernel that provides a programming interface for creating client USB devices and software simulation of USB devices. This could lead to a kernel leak, crash, or arbitrary code execution at the kernels.

The attack is carried out by an unprivileged local user, through manipulation of various device classes implemented on the basis of the USB Gadget API, such as rndis, hid, uac1, uac1_legacy, and uac2. Learn more here.

L

LinuxStoney

Linux Today Logo

LinuxToday is a trusted, contributor-driven news resource supporting all types of Linux users. Our thriving international community engages with us through social media and frequent content contributions aimed at solving problems ranging from personal computing to enterprise-level IT operations. LinuxToday serves as a home for a community that struggles to find comparable information elsewhere on the web.

Property of TechnologyAdvice. © 2026 TechnologyAdvice. All Rights Reserved

Advertiser Disclosure: Some of the products that appear on this site are from companies from which TechnologyAdvice receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. TechnologyAdvice does not include all companies or all types of products available in the marketplace.