---
id: CVE-2024-56545
title: 'HID: hyperv: streamline driver probe to avoid devres issues'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  HID: hyperv: streamline driver probe to avoid devres issues

  It was found that unloading 'hid_hyperv' module results in a devres
  complaint:

   ...
   hv_vmbus: unregisteri…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 62c68e7cee332e08e625af3bca3318814086490d <
    b03e713a400aeb5f969bab4daf47a7402d0df814
  - >-
    Linux >= 62c68e7cee332e08e625af3bca3318814086490d <
    19a9457e5e210e408c1f8865b5d93c5a2c90409d
  - >-
    Linux >= 62c68e7cee332e08e625af3bca3318814086490d <
    3d48d0fbaaa74a04fb9092780a3f83dc4f3f8160
  - >-
    Linux >= 62c68e7cee332e08e625af3bca3318814086490d <
    66ef47faa90d838cda131fe1f7776456cc3b59f2
  - Linux e6ea3de7abef998aaab9f04a7a11a7c5f56bbe57
  - Linux ac0d8318082f549419104cfe9cb6a9deb2df9853
  - Linux 4d1617e40713a6202b6165ca137b09aaf35637f5
  - Linux >= 5.10.270 < 5.11
  - Linux >= 5.15.221 < 5.16
  - Linux >= 6.1.188 < 6.2
  - Linux 6.5
published: '2024-12-27'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T11:57:48.267Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-56545'
references:
  - url: 'https://git.kernel.org/stable/c/b03e713a400aeb5f969bab4daf47a7402d0df814'
  - url: 'https://git.kernel.org/stable/c/19a9457e5e210e408c1f8865b5d93c5a2c90409d'
  - url: 'https://git.kernel.org/stable/c/3d48d0fbaaa74a04fb9092780a3f83dc4f3f8160'
  - url: 'https://git.kernel.org/stable/c/66ef47faa90d838cda131fe1f7776456cc3b59f2'
tags:
  - cve.org
epss: 0.00213
epssPercentile: 0.11947
ingestedAt: '2026-09-14T15:23:07.460Z'
---

## Overview

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

HID: hyperv: streamline driver probe to avoid devres issues

It was found that unloading 'hid_hyperv' module results in a devres
complaint:

 ...
 hv_vmbus: unregistering driver hid_hyperv
 ------------[ cut here ]------------
 WARNING: CPU: 2 PID: 3983 at drivers/base/devres.c:691 devres_release_group+0x1f2/0x2c0
 ...
 Call Trace:
  <TASK>
  ? devres_release_group+0x1f2/0x2c0
  ? __warn+0xd1/0x1c0
  ? devres_release_group+0x1f2/0x2c0
  ? report_bug+0x32a/0x3c0
  ? handle_bug+0x53/0xa0
  ? exc_invalid_op+0x18/0x50
  ? asm_exc_invalid_op+0x1a/0x20
  ? devres_release_group+0x1f2/0x2c0
  ? devres_release_group+0x90/0x2c0
  ? rcu_is_watching+0x15/0xb0
  ? __pfx_devres_release_group+0x10/0x10
  hid_device_remove+0xf5/0x220
  device_release_driver_internal+0x371/0x540
  ? klist_put+0xf3/0x170
  bus_remove_device+0x1f1/0x3f0
  device_del+0x33f/0x8c0
  ? __pfx_device_del+0x10/0x10
  ? cleanup_srcu_struct+0x337/0x500
  hid_destroy_device+0xc8/0x130
  mousevsc_remove+0xd2/0x1d0 [hid_hyperv]
  device_release_driver_internal+0x371/0x540
  driver_detach+0xc5/0x180
  bus_remove_driver+0x11e/0x2a0
  ? __mutex_unlock_slowpath+0x160/0x5e0
  vmbus_driver_unregister+0x62/0x2b0 [hv_vmbus]
  ...

And the issue seems to be that the corresponding devres group is not
allocated. Normally, devres_open_group() is called from
__hid_device_probe() but Hyper-V HID driver overrides 'hid_dev->driver'
with 'mousevsc_hid_driver' stub and basically re-implements
__hid_device_probe() by calling hid_parse() and hid_hw_start() but not
devres_open_group(). hid_device_probe() does not call __hid_device_probe()
for it. Later, when the driver is removed, hid_device_remove() calls
devres_release_group() as it doesn't check whether hdev->driver was
initially overridden or not.

The issue seems to be related to the commit 62c68e7cee33 ("HID: ensure
timely release of driver-allocated resources") but the commit itself seems
to be correct.

Fix the issue by dropping the 'hid_dev->driver' override and using
hid_register_driver()/hid_unregister_driver() instead. Alternatively, it
would have been possible to rely on the default handling but
HID_CONNECT_DEFAULT implies HID_CONNECT_HIDRAW and it doesn't seem to work
for mousevsc as-is.

## Affected

- `Linux >= 62c68e7cee332e08e625af3bca3318814086490d < b03e713a400aeb5f969bab4daf47a7402d0df814`
- `Linux >= 62c68e7cee332e08e625af3bca3318814086490d < 19a9457e5e210e408c1f8865b5d93c5a2c90409d`
- `Linux >= 62c68e7cee332e08e625af3bca3318814086490d < 3d48d0fbaaa74a04fb9092780a3f83dc4f3f8160`
- `Linux >= 62c68e7cee332e08e625af3bca3318814086490d < 66ef47faa90d838cda131fe1f7776456cc3b59f2`
- `Linux e6ea3de7abef998aaab9f04a7a11a7c5f56bbe57`
- `Linux ac0d8318082f549419104cfe9cb6a9deb2df9853`
- `Linux 4d1617e40713a6202b6165ca137b09aaf35637f5`
- `Linux >= 5.10.270 < 5.11`
- `Linux >= 5.15.221 < 5.16`
- `Linux >= 6.1.188 < 6.2`
- `Linux 6.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.