---
id: CVE-2025-40354
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: increase max link count and fix link->enc NULL pointer access

  [why]
  1.) dc->links[MAX_LINKS] array size smaller than actual requested.
  max_connector +…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: increase max link count and fix link->enc NULL pointer access

  [why]
  1.) dc->links[MAX_LINKS] array size smaller than actual requested.
  max_connector +…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
published: '2025-12-16'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-40354'
references:
  - url: 'https://git.kernel.org/stable/c/a3fc0d36cfb927f8986b83bf5fba47dbedad3c63'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bec947cbe9a65783adb475a5fb47980d7b4f4796'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f28092be4e12b7df9e4f415d25bf0d767bc2d9ed'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00152
epssPercentile: 0.03904
ingestedAt: '2026-10-14T13:30:58.439Z'
---

## Overview

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

drm/amd/display: increase max link count and fix link->enc NULL pointer access

[why]
1.) dc->links[MAX_LINKS] array size smaller than actual requested.
max_connector + max_dpia + 4 virtual = 14.
increase from 12 to 14.

2.) hw_init() access null LINK_ENC for dpia non display_endpoint.

(cherry picked from commit d7f5a61e1b04ed87b008c8d327649d184dc5bb45)

## Remediation

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