CVE-2026-80769
Received Received - Intake

HID USB Interface Validation Bypass in Linux Kernel

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: HID: rapoo: fix missing hid_is_usb() check to_usb_interface() can only be used on a hid_device whose parent is really USB; uhid can create devices that identify as being on BUS_USB, but don't actually have a USB parent. Fix the use of to_usb_interface() without a hid_is_usb() check. Add a dependency on USB_HID for hid_is_usb(), as other HID drivers do; the alternative would be to provide a simple stub implementation on !USB_HID builds. I have verified that it is currently possible to trigger a kernel splat due to this bug in an ASAN build, and that this commit fixes the issue.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-04
AI Q&A
2026-09-04
EPSS Evaluated
N/A
NVD
CVE-2026-80769
EUVD
EUVD-2026-71412

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
rapoo hid *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability in the Linux kernel involves a missing check in the HID driver for Rapoo devices. The function to_usb_interface() was used without verifying if the device is actually connected via USB. This can lead to errors when uhid creates devices that appear as USB but lack a proper USB parent.

Detection Guidance

This vulnerability is specific to the Linux kernel's HID driver for Rapoo devices. Detection requires checking kernel logs for splats or errors related to hid_rapoo or to_usb_interface(). Use dmesg | grep -i rapoo or dmesg | grep -i usb_interface to search for related errors.

Impact Analysis

This bug can cause kernel splats or crashes, especially in ASAN builds. It may lead to system instability or unexpected behavior when interacting with Rapoo HID devices.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. It is a Linux kernel issue related to HID device handling that could cause kernel errors but does not involve data breaches or privacy violations.

Mitigation Strategies

Update the Linux kernel to a version that includes the fix for this vulnerability. If using a distribution kernel, apply the latest available updates. If compiling from source, ensure the kernel includes the commit fixing the hid_is_usb() check for Rapoo devices.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-80769. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart