CVE-2025-38016

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

HID: bpf: abort dispatch if device destroyed

The current HID bpf implementation assumes no output report/request will

go through it after hid_bpf_destroy_device() has been called. This leads

to a bug that unplugging certain types of HID devices causes a cleaned-

up SRCU to be accessed. The bug was previously a hidden failure until a

recent x86 percpu change [1] made it access not-present pages.

The bug will be triggered if the conditions below are met:

A) a device under the driver has some LEDs on

B) hid_ll_driver->request() is uninplemented (e.g., logitech-djreceiver)

If condition A is met, hidinput_led_worker() is always scheduled *after*

hid_bpf_destroy_device().

hid_destroy_device

` hid_bpf_destroy_device

` cleanup_srcu_struct(&hdev->bpf.srcu)

` hid_remove_device

` ...

` led_classdev_unregister

` led_trigger_set(led_cdev, NULL)

` led_set_brightness(led_cdev, LED_OFF)

` ...

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References