---
id: CVE-2026-97484
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  usbip: vhci_hcd: fix NULL deref in status_show_vhci

  platform_get_drvdata() can return NULL if a VHCI host controller's
  probe failed (e.g
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  usbip: vhci_hcd: fix NULL deref in status_show_vhci

  platform_get_drvdata() can return NULL if a VHCI host controller's
  probe failed (e.g. due to USB bus number exhaust…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 0775a9cbc694e8c7276688be3bbd2f386167ab54 <
    2b477ee5cc9c2670185ffd82911a20e1760008c2
  - >-
    Linux >= 0775a9cbc694e8c7276688be3bbd2f386167ab54 <
    671d2687a790f63110c3c4213230209f5c3e0e8e
  - >-
    Linux >= 0775a9cbc694e8c7276688be3bbd2f386167ab54 <
    fd7d938ab4759a45eb107e658c199a2c47cc1ace
  - >-
    Linux >= 0775a9cbc694e8c7276688be3bbd2f386167ab54 <
    517c353e5358b2123cbf620a1798fe632fb7bdce
  - >-
    Linux >= 0775a9cbc694e8c7276688be3bbd2f386167ab54 <
    046a94fdb02eb1df86c8fa4614104ff801ba3ab7
  - >-
    Linux >= 0775a9cbc694e8c7276688be3bbd2f386167ab54 <
    dacd7c317ba12e035653c28a0eaaf23d91abc073
  - >-
    Linux >= 0775a9cbc694e8c7276688be3bbd2f386167ab54 <
    bc150783542ba2e7c1257d1299c6f3269bdba270
  - Linux 4.9
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:58.343'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97484'
references:
  - url: 'https://git.kernel.org/stable/c/046a94fdb02eb1df86c8fa4614104ff801ba3ab7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2b477ee5cc9c2670185ffd82911a20e1760008c2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/517c353e5358b2123cbf620a1798fe632fb7bdce'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/671d2687a790f63110c3c4213230209f5c3e0e8e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bc150783542ba2e7c1257d1299c6f3269bdba270'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/dacd7c317ba12e035653c28a0eaaf23d91abc073'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fd7d938ab4759a45eb107e658c199a2c47cc1ace'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97484.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97484'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540495'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97484'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97484'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97484.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00173
epssPercentile: 0.06628
cvssSource: vendor
ingestedAt: '2026-09-24T16:47:15.869Z'
---

## Overview

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

usbip: vhci_hcd: fix NULL deref in status_show_vhci

platform_get_drvdata() can return NULL if a VHCI host controller's
probe failed (e.g. due to USB bus number exhaustion). status_show_vhci()
checked for a NULL pdev but not for a NULL hcd returned by
platform_get_drvdata(). Passing NULL to hcd_to_vhci_hcd() does not
return NULL - it returns a pointer offset of 0x260, causing a NULL
pointer dereference when that value is subsequently dereferenced.

Add a NULL check on hcd before calling hcd_to_vhci_hcd(). Move
status_show_not_ready() above status_show_vhci() to make it callable
from the new error path without a forward declaration.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97484.json)