---
id: CVE-2026-89773
title: >-
  kernel: drm/amd/display: Skip Update HDCP Config In Transition State
  (CVE-2026-89773)
summary: >-
  A flaw was found in the `drm/amd/display` component of the Linux kernel. This
  vulnerability occurs because the High-bandwidth Digital Content Protection
  (HDCP) configuration routine is skipped during a transition state when an
  invalid `dm_…
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-908
vendor: Red Hat
product: Red Hat Enterprise Linux 6
affected:
  - enterprise_linux 6
published: '2026-09-11'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T04:24:07+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89773.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89773.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89773'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532336'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89773'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89773'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89773.mbox
  - url: 'https://git.kernel.org/stable/c/d5164580a99477dcfe15cea101b153b1e63f1535'
  - url: 'https://git.kernel.org/stable/c/f733276ae737e4d599d1e19de6722aee1521a154'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00176
epssPercentile: 0.07411
ingestedAt: '2026-09-14T15:23:07.476Z'
---

## Overview

A flaw was found in the `drm/amd/display` component of the Linux kernel. This vulnerability occurs because the High-bandwidth Digital Content Protection (HDCP) configuration routine is skipped during a transition state when an invalid `dm_stream_ctx` is present. This can lead to the HDCP routine not being properly configured, potentially allowing unauthorized access to protected content.

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 6 · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89773.json)

**kernel: drm/amd/display: Skip Update HDCP Config In Transition State** — rated Low by Red Hat. Released 2026-09-11, updated 2026-09-16.

Affected:

- Red Hat Enterprise Linux 6

No fix planned:

- Red Hat Enterprise Linux 6

Not affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Out of support scope