---
id: CVE-2026-89483
title: 'kernel: nvme: zero the discard fallback page (CVE-2026-89483)'
summary: >-
  A flaw was found in the Linux kernel's Non-Volatile Memory Express (NVMe)
  subsystem. Under specific memory pressure conditions, a local user could
  trigger a scenario where uninitialized kernel memory is used and potentially
  exposed. This c…
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-824
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T14:55:56+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89483.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89483.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89483'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532387'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89483'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89483'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89483.mbox
  - url: 'https://git.kernel.org/stable/c/76139b5bbf531e675934b97227be3521c7fdd537'
  - url: 'https://git.kernel.org/stable/c/3f84d2bd0d8ae8c7e8e0f8fc3cbf018a282971a1'
  - url: 'https://git.kernel.org/stable/c/415f2772ebcbc7f3f1ab1a71915dab82cee3465e'
  - url: 'https://git.kernel.org/stable/c/66b5af23b6f956e57f8205c46aa80b054631be34'
  - url: 'https://git.kernel.org/stable/c/dc4d4b70a863f7e39ef8bd137634be4e6db8b084'
  - url: 'https://git.kernel.org/stable/c/67551d8430df94c827e1830bd3a5fae1f66a5219'
  - url: 'https://git.kernel.org/stable/c/f5827817b4fc7feeabf4f53fb4b626e6edc52fef'
  - url: 'https://git.kernel.org/stable/c/bededeaaeff404978a5a8e2a605a6c3017cddd3e'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00579
epssPercentile: 0.45261
scores:
  vendor: 5.5
  cna: 7.5
ingestedAt: '2026-09-14T15:23:07.452Z'
---

## Overview

A flaw was found in the Linux kernel's Non-Volatile Memory Express (NVMe) subsystem. Under specific memory pressure conditions, a local user could trigger a scenario where uninitialized kernel memory is used and potentially exposed. This could lead to information disclosure, revealing sensitive data from the system's memory.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89483.json)

**kernel: nvme: zero the discard fallback page** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-16.

Affected:

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

No fix planned:

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

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7

## Remediation

Fix deferred