---
id: CVE-2026-98783
title: >-
  kernel: drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform device
  (CVE-2026-98783)
summary: >-
  A flaw was found in the Linux kernel's MediaTek DRM (Direct Rendering Manager)
  driver. The driver fails to verify whether the display overlay adaptor
  platform device is successfully registered during initialization. If the
  registration fai…
severity: medium
cvss: 4.1
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-252
vendor: Red Hat
product: Linux
affected:
  - >-
    Linux >= 0d9eee9118b77e51eeafc5bf4d008fac97035d56 <
    f0ffb09cf1bf2a0f301f51fb45371c09dc78fcd0
  - >-
    Linux >= 0d9eee9118b77e51eeafc5bf4d008fac97035d56 <
    4acac370aad2d4895a82f40b2f03e9ef70eecaa6
  - >-
    Linux >= 0d9eee9118b77e51eeafc5bf4d008fac97035d56 <
    88f8a92dcb0cb154774595dee7226458de4cbd38
  - >-
    Linux >= 0d9eee9118b77e51eeafc5bf4d008fac97035d56 <
    aeef8a8537bcfb26689edb36ed905b8b2873001c
  - >-
    Linux >= 0d9eee9118b77e51eeafc5bf4d008fac97035d56 <
    bce7698e2e6565bb765bd0522337f29f5f312624
  - Linux 6.4
published: '2026-10-18'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T10:59:47+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98783.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98783.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98783'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2555183'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98783'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98783'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98783.mbox
  - url: 'https://git.kernel.org/stable/c/f0ffb09cf1bf2a0f301f51fb45371c09dc78fcd0'
  - url: 'https://git.kernel.org/stable/c/4acac370aad2d4895a82f40b2f03e9ef70eecaa6'
  - url: 'https://git.kernel.org/stable/c/88f8a92dcb0cb154774595dee7226458de4cbd38'
  - url: 'https://git.kernel.org/stable/c/aeef8a8537bcfb26689edb36ed905b8b2873001c'
  - url: 'https://git.kernel.org/stable/c/bce7698e2e6565bb765bd0522337f29f5f312624'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00168
epssPercentile: 0.0597
ingestedAt: '2026-10-18T16:47:32.488Z'
---

## Overview

A flaw was found in the Linux kernel's MediaTek DRM (Direct Rendering Manager) driver. The driver fails to verify whether the display overlay adaptor platform device is successfully registered during initialization. If the registration fails, the system attempts to use an invalid memory pointer, leading to a kernel crash and a Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98783.json)

**kernel: drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform device** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.

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.