---
id: CVE-2026-98876
title: >-
  kernel: host1x: bus: Fix missing ops null check in error teardown
  (CVE-2026-98876)
summary: >-
  A flaw was found in the Linux kernel's Host1x bus driver. This vulnerability
  can lead to a Denial of Service (DoS) by causing a system crash. During device
  initialization error handling, the driver attempts to access client operations
  with…
severity: medium
cvss: 4.1
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-476
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-10-23'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T11:01:50+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98876.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98876.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98876'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2559544'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98876'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98876'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98876.mbox
  - url: 'https://git.kernel.org/stable/c/d8d5b6e02fc281dea33d6b0b0fadaccea56f2067'
  - url: 'https://git.kernel.org/stable/c/f1fa6c936fa9de80ae446ba5e76e227e991b8e56'
  - url: 'https://git.kernel.org/stable/c/74bd1f05d9ba2d6672d30ccafe80a38104c1f73f'
  - url: 'https://git.kernel.org/stable/c/62851e7b0e55de6fe08da08bc41fd587fbcb0e9b'
  - url: 'https://git.kernel.org/stable/c/29375e071ea201fe97bafe1d2ad9d9f30311abfb'
  - url: 'https://git.kernel.org/stable/c/71d25f668bc5c0f36ea843462e12307dea45aaa3'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00179
epssPercentile: 0.074
ingestedAt: '2026-10-23T13:24:55.584Z'
---

## Overview

A flaw was found in the Linux kernel's Host1x bus driver. This vulnerability can lead to a Denial of Service (DoS) by causing a system crash. During device initialization error handling, the driver attempts to access client operations without first verifying their presence. A local user capable of triggering these initialization failure conditions can cause a null pointer dereference that halts the operating system.

## Vendor advisories

- **Red Hat VEX** · Moderate · 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 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98876.json)

**kernel: host1x: bus: Fix missing ops null check in error teardown** — rated Moderate by Red Hat. Released 2026-10-23, updated 2026-10-26.

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

Not affected:

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

## Remediation

Fix deferred