---
id: CVE-2026-98512
title: >-
  kernel: drm/nouveau: RCU-free the scheduler-containing nouveau_sched
  (CVE-2026-98512)
summary: >-
  A flaw was found in the Linux kernel's Nouveau graphics driver. When
  destroying a GPU scheduler object, the driver frees memory prematurely while
  user-space synchronization objects still hold references to it. A local,
  unprivileged user co…
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-825
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-10-18'
updated: '2026-10-24'
sourceUpdated: '2026-10-24T14:27:56+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98512.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98512.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98512'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2554846'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98512'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98512'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98512.mbox
  - url: 'https://git.kernel.org/stable/c/40edf5eefc3fd94592a91d6eb074d4fc6f606c75'
  - url: 'https://git.kernel.org/stable/c/35151e9a8274174ccbb92e3b3ba7dc7a008dcada'
  - url: 'https://git.kernel.org/stable/c/cd6e11b6ebe04a0a1f1435df561acada9eadc563'
  - url: 'https://git.kernel.org/stable/c/f7eae6d8d768fabd6b59779ca7da79e02c74e113'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00159
epssPercentile: 0.05033
scores:
  vendor: 5.5
  cna: 7.1
ingestedAt: '2026-10-18T15:45:12.286Z'
---

## Overview

A flaw was found in the Linux kernel's Nouveau graphics driver. When destroying a GPU scheduler object, the driver frees memory prematurely while user-space synchronization objects still hold references to it. A local, unprivileged user could exploit this flaw by querying synchronization file information to trigger a use-after-free read, potentially leading to a system crash and Denial of Service (DoS) or information disclosure.

## 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 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98512.json)

**kernel: drm/nouveau: RCU-free the scheduler-containing nouveau_sched** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-24.

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 Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Fix deferred