CVE-2026-31606

kernel: usb: gadget: f_hid: don't call cdev_init while cdev in use

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · April 24, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's USB Human Interface Device (HID) gadget driver. When the /dev/hidg* device is still open during unbind and bind operations, the character device (cdev) is reinitialized while still in use. This unsafe behavior can lead to a system crash, resulting in a Denial of Service (DoS).

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-413 · Improper Resource Locking