---
id: CVE-2026-89591
title: >-
  kernel: accel/rocket: initialize job domain before cleanup paths
  (CVE-2026-89591)
summary: >-
  A flaw was found in the Linux kernel's `accel/rocket` module. During error
  handling in the `rocket_ioctl_submit_job()` function, a cleanup routine may
  attempt to free a `job->domain` pointer that has not yet been initialized,
  leading to a …
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: '2026-09-21T14:05:42+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89591.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89591.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89591'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532212'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89591'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89591'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89591.mbox
  - url: 'https://git.kernel.org/stable/c/3043230296653a609ab50006899e64bbb2d99465'
  - url: 'https://git.kernel.org/stable/c/70e6a33d68a9b03335c5426332666e52d07f45d6'
  - url: 'https://git.kernel.org/stable/c/81731f1eda5e6a1dfad31445f741de9bbefbb08e'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00198
epssPercentile: 0.09831
ingestedAt: '2026-09-14T11:11:19.886Z'
---

## Overview

A flaw was found in the Linux kernel's `accel/rocket` module. During error handling in the `rocket_ioctl_submit_job()` function, a cleanup routine may attempt to free a `job->domain` pointer that has not yet been initialized, leading to a NULL pointer dereference. A local attacker could exploit this vulnerability to trigger a system crash, resulting in 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-2026-89591.json)

**kernel: accel/rocket: initialize job domain before cleanup paths** — 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.