---
id: CVE-2026-80705
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: check if dml21_add_phantom_plane() is successful

  Verify that the phantom plane was allocated to avoid a later
  segfault.

  (cherry picked from commit 5a…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: check if dml21_add_phantom_plane() is successful

  Verify that the phantom plane was allocated to avoid a later
  segfault.

  (cherry picked from commit 5a…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 <
    bea1f73ad69eec36b757adb8e63beb3092f862ee
  - >-
    Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 <
    062cfd6c678f6647c8841f684d6dadab08d95512
  - >-
    Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 <
    000acb4ce7fb9feba3072ce468ad681f6585cd5d
  - Linux 6.11
published: '2026-08-28'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:17:51.947'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80705'
references:
  - url: 'https://git.kernel.org/stable/c/000acb4ce7fb9feba3072ce468ad681f6585cd5d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/062cfd6c678f6647c8841f684d6dadab08d95512'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bea1f73ad69eec36b757adb8e63beb3092f862ee'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80705.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80705'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2525449'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80705'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80705'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026082807-CVE-2026-80705-8eb2@gregkh/T
  - url: 'https://git.kernel.org/stable/c/ef7d731f1df63d6230e159996c0703aaf5132bac'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00209
epssPercentile: 0.10958
ingestedAt: '2026-10-15T11:00:41.663Z'
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-476
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: check if dml21_add_phantom_plane() is successful

Verify that the phantom plane was allocated to avoid a later
segfault.

(cherry picked from commit 5adb54abe5a8e82cbff7f8806db30a5f4924329f)

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80705.json)