USB Gadget f_sourcesink Isoc Transfer Vulnerability in Linux Kernel
Summary
GSD-2022-1000080: usb: gadget: f_sourcesink: Fix isoc transfer for USB_SPEED_SUPER_PLUS. Affects Kernel versions >= beb1e67a5ca8d69703c776db9000527f44c0c93c, < 41579b9e73773dc9157df13494c9916c30fe5e09. 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 USB gadget subsystem in the Linux Kernel enables devices to act as USB peripherals, allowing them to interact with host systems. One component of this subsystem is the f_sourcesink module, which provides support for USB_SPEED_SUPER_PLUS, a high-speed USB transfer mode.
Vulnerability Detail
The f_sourcesink module in the Linux Kernel is vulnerable to an isochronous (isoc) transfer issue when used with USB_SPEED_SUPER_PLUS. This vulnerability was introduced in version v4.9.273 and fixed in version v4.9.300. The issue could potentially lead to data corruption or system instability when performing isoc transfers at USB_SPEED_SUPER_PLUS. Attackers may exploit this vulnerability to manipulate data or cause denial-of-service conditions.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, users should update their Linux Kernel to version v4.9.300 or later. This can be done by applying the commit 41579b9e73773dc9157df13494c9916c30fe5e09 from the official Linux Kernel repository. Users can obtain the updated kernel source code from the repository and compile it for their specific system. Alternatively, they can wait for their Linux distribution to provide an updated package containing the fix.
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix as soon as possible.
Conclusion
The USB Gadget f_sourcesink Isoc Transfer Vulnerability in the Linux Kernel poses a risk of data corruption and system instability when performing isoc transfers at USB_SPEED_SUPER_PLUS. It is crucial for users to update their Linux Kernel to version v4.9.300 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability could result in data corruption or system instability when performing isoc transfers at USB_SPEED_SUPER_PLUS. Attackers may exploit this vulnerability to manipulate data or cause denial-of-service conditions.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this one.
There is no known exploit for this vulnerability at the time of this report. However, it is important to apply the fix to mitigate the risk.
This vulnerability requires local access to a system running the affected Linux Kernel with the f_sourcesink module enabled. It cannot be exploited remotely over a network.
There are no reported incidents related to this vulnerability at the time of this report.
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