---
id: CVE-2026-93826
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  HID: hidpp: fix potential UAF in hidpp_connect_event()

  If input_register_device() fails, we call input_free_device(), but keep
  stale pointer to the old device in hidpp…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  HID: hidpp: fix potential UAF in hidpp_connect_event()

  If input_register_device() fails, we call input_free_device(), but keep
  stale pointer to the old device in hidpp…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    3b8b2e58b078cd30e121401535541bb8a6d57133
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    3303398cc2aa255ba251650a30024e11d48ea6c3
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    6df6b1f2c49678211f65647c300bc51dda02893b
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T13:17:23.403'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93826'
references:
  - url: 'https://git.kernel.org/stable/c/3303398cc2aa255ba251650a30024e11d48ea6c3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3b8b2e58b078cd30e121401535541bb8a6d57133'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6df6b1f2c49678211f65647c300bc51dda02893b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T16:47:15.891Z'
---

## Overview

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

HID: hidpp: fix potential UAF in hidpp_connect_event()

If input_register_device() fails, we call input_free_device(), but keep
stale pointer to the old device in hidpp->input, which could potentially
lead to UAF. Fix that by resetting it to NULL before returning from
hidpp_connect_event().

## Remediation

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