---
id: CVE-2026-89592
title: >-
  kernel: accel/rocket: fix NULL dereference and integer overflow in
  rocket_job_push() (CVE-2026-89592)
summary: >-
  A flaw was found in the `accel/rocket` component of the Linux kernel. This
  vulnerability arises from two issues: a missing null check after a memory
  allocation failure and an integer overflow when calculating memory
  requirements based on u…
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: '2026-09-18'
sourceUpdated: '2026-09-18T18:31:57+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89592.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89592.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89592'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532166'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89592'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89592'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89592.mbox
  - url: 'https://git.kernel.org/stable/c/a85402bff218f2b8f0d806e46c16c2f3d49cdda7'
  - url: 'https://git.kernel.org/stable/c/c1a5bf1b6e1d5944183dcef3844a18c17219af4d'
  - url: 'https://git.kernel.org/stable/c/dfff90a6eb2258e3b867994ae17af4a7ba3504d2'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00206
epssPercentile: 0.09435
ingestedAt: '2026-09-14T11:11:19.886Z'
---

## Overview

A flaw was found in the `accel/rocket` component of the Linux kernel. This vulnerability arises from two issues: a missing null check after a memory allocation failure and an integer overflow when calculating memory requirements based on user-supplied values. An attacker could exploit these flaws to cause a kernel null pointer dereference or out-of-bounds memory access, potentially leading to a denial of service.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89592.json)

**kernel: accel/rocket: fix NULL dereference and integer overflow in rocket_job_push()** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.

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.