---
id: CVE-2026-98566
title: >-
  kernel: drm/imagination: clamp freelist reconstruction requests
  (CVE-2026-98566)
summary: >-
  A flaw was found in the Linux kernel's drm/imagination GPU driver. The driver
  fails to properly validate and bound the firmware reconstruction count against
  the fixed protocol array capacity when processing freelist reconstruction
  requests…
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 >= 6eedddab733b350886571f98b810108b13bf74ae <
    b78f8f5532a077baa4aabccf657a4fb3b164659e
  - >-
    Linux >= 6eedddab733b350886571f98b810108b13bf74ae <
    e0560db0ea6e10c283ebe7c259a7af8d3b6e61a6
  - >-
    Linux >= 6eedddab733b350886571f98b810108b13bf74ae <
    eabd0ae3611769c826dbc118a1e240628731b348
  - >-
    Linux >= 6eedddab733b350886571f98b810108b13bf74ae <
    45585c3aa285854face65293acc95eff73063d6d
  - Linux 6.8
published: '2026-10-18'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T02:46:03+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98566.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98566.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98566'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2554957'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98566'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98566'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98566.mbox
  - url: 'https://git.kernel.org/stable/c/b78f8f5532a077baa4aabccf657a4fb3b164659e'
  - url: 'https://git.kernel.org/stable/c/e0560db0ea6e10c283ebe7c259a7af8d3b6e61a6'
  - url: 'https://git.kernel.org/stable/c/eabd0ae3611769c826dbc118a1e240628731b348'
  - url: 'https://git.kernel.org/stable/c/45585c3aa285854face65293acc95eff73063d6d'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00206
epssPercentile: 0.10481
ingestedAt: '2026-10-18T15:45:12.258Z'
---

## Overview

A flaw was found in the Linux kernel's drm/imagination GPU driver. The driver fails to properly validate and bound the firmware reconstruction count against the fixed protocol array capacity when processing freelist reconstruction requests. A local attacker could exploit this vulnerability by submitting oversized reconstruction requests, causing out-of-bounds memory access that may lead to memory corruption or a Denial of Service (DoS) via a system crash.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98566.json)

**kernel: drm/imagination: clamp freelist reconstruction requests** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.

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.