---
id: CVE-2026-98518
title: >-
  kernel: drm/nouveau/dmem: pin VRAM for the whole registered range
  (CVE-2026-98518)
summary: >-
  A flaw was found in the Linux kernel's Nouveau graphics driver. This
  vulnerability allows a local user to cause a denial of service (DoS) or system
  instability through an out-of-bounds memory access in video random-access
  memory (VRAM). Th…
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-787
vendor: Red Hat
product: Linux
affected:
  - >-
    Linux >= c3228747107705d47c7e9a03598a434a0380cb73 <
    06c69c64686a31783c8bec6495dc22822d38c4ce
  - >-
    Linux >= c3228747107705d47c7e9a03598a434a0380cb73 <
    64ca4cdd1031206424e6455f0ae4fb0560d8f46a
  - Linux 6.19
published: '2026-10-18'
updated: '2026-10-24'
sourceUpdated: '2026-10-24T14:23:32+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98518.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98518.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98518'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2554887'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98518'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98518'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98518.mbox
  - url: 'https://git.kernel.org/stable/c/06c69c64686a31783c8bec6495dc22822d38c4ce'
  - url: 'https://git.kernel.org/stable/c/64ca4cdd1031206424e6455f0ae4fb0560d8f46a'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00132
epssPercentile: 0.02777
scores:
  vendor: 5.5
  cna: 7
ingestedAt: '2026-10-18T15:45:12.283Z'
---

## Overview

A flaw was found in the Linux kernel's Nouveau graphics driver. This vulnerability allows a local user to cause a denial of service (DoS) or system instability through an out-of-bounds memory access in video random-access memory (VRAM). The issue occurs because the driver fails to allocate an adequately sized buffer object to back the full registered device memory range. As a result, memory requests referencing pages past the initial chunk access memory outside the buffer boundaries.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98518.json)

**kernel: drm/nouveau/dmem: pin VRAM for the whole registered range** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-24.

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.