HID: usbhid: fix info leak in hid_submit_ctrl
Summary
GSD-2021-1000909: HID: usbhid: fix info leak in hid_submit_ctrl. Affects Kernel versions < 7f5a4b24cdbd7372770a02f23e347d7d9a9ac8f1. No fix is published. How to fix ↓
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Background
The HID (Human Interface Device) subsystem in the Linux Kernel is responsible for handling input devices such as keyboards, mice, and game controllers. The usbhid driver is specifically designed to support USB HID devices. This vulnerability affects the usbhid driver and can lead to an information leak in the hid_submit_ctrl function.
Vulnerability Detail
The hid_submit_ctrl function in the usbhid driver has a flaw that can result in an information leak. This vulnerability allows an attacker to read sensitive data from kernel memory. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in Linux Kernel version v5.4.127 by commit 7f5a4b24cdbd7372770a02f23e347d7d9a9ac8f1.
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
In conclusion, the HID: usbhid: fix info leak in hid_submit_ctrl vulnerability affects the usbhid driver in the Linux Kernel. It can result in an information leak from kernel memory. It is recommended to update the Linux Kernel to version v5.4.127 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The HID subsystem in the Linux Kernel is responsible for handling input devices such as keyboards, mice, and game controllers. It provides a standardized interface for these devices to communicate with the operating system.
The usbhid driver is a specific driver in the HID subsystem that supports USB HID devices. It allows USB HID devices to be recognized and used by the Linux Kernel.
An information leak vulnerability is a security flaw that allows an attacker to gain unauthorized access to sensitive information. In this case, the vulnerability in the hid_submit_ctrl function can lead to the leakage of kernel memory contents.
The impact of this vulnerability is the potential exposure of sensitive data from kernel memory. However, the actual impact and attack plausibility have not been proven yet.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in the software.
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