---
id: CVE-2026-89734
title: >-
  kernel: usb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()
  (CVE-2026-89734)
summary: >-
  A flaw was found in the Linux kernel's USB Video Class (UVC) gadget driver.
  This vulnerability occurs in the `uvcg_video_init()` function when the
  `kthread_run_worker()` function fails. In such a scenario, an error logging
  mechanism attemp…
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'
cvssSource: vendor
cwe: CWE-476
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
affected:
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T17:28:02+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89734.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89734.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89734'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532458'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89734'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89734'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89734.mbox
  - url: 'https://git.kernel.org/stable/c/5b1da38592efdc1a263d4c0353298cba19e9d6fc'
  - url: 'https://git.kernel.org/stable/c/d511e015d06767f52bb18d48371cab6d7cb88433'
  - url: 'https://git.kernel.org/stable/c/dbe2762ae8e543b06c57f1ac6512b02fd3fd09b2'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00206
epssPercentile: 0.09442
ingestedAt: '2026-09-14T11:11:19.885Z'
---

## Overview

A flaw was found in the Linux kernel's USB Video Class (UVC) gadget driver. This vulnerability occurs in the `uvcg_video_init()` function when the `kthread_run_worker()` function fails. In such a scenario, an error logging mechanism attempts to access an uninitialized pointer, leading to a null pointer dereference. This can result in a system crash, causing a Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89734.json)

**kernel: usb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-21.

Not affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Refer to the advisory for fix availability.