---
id: CVE-2026-43243
title: 'drm/amd/display: Add signal type check for dcn401 get_phyd32clk_src'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: Add signal type check for dcn401 get_phyd32clk_src

  Trying to access link enc on a dpia link will cause a crash otherwise
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 <
    23e7150afc70da615857f9f07b494ec58540f096
  - >-
    Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 <
    486b2909ac284185900c06f05ffc6eca895f38b8
  - >-
    Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 <
    e332112255afbce02db67760f5743a1b13aa8541
  - >-
    Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 <
    c979d8db7b0f293111f2e83795ea353c8ed75de9
  - Linux 6.11
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T15:31:20.283295Z'
published: '2026-05-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T15:32:37.193Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43243'
references:
  - url: 'https://git.kernel.org/stable/c/23e7150afc70da615857f9f07b494ec58540f096'
  - url: 'https://git.kernel.org/stable/c/486b2909ac284185900c06f05ffc6eca895f38b8'
  - url: 'https://git.kernel.org/stable/c/e332112255afbce02db67760f5743a1b13aa8541'
  - url: 'https://git.kernel.org/stable/c/c979d8db7b0f293111f2e83795ea353c8ed75de9'
tags:
  - cve.org
epss: 0.00122
epssPercentile: 0.01991
ingestedAt: '2026-11-06T15:54:04.004Z'
---

## Overview

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

drm/amd/display: Add signal type check for dcn401 get_phyd32clk_src

Trying to access link enc on a dpia link will cause a crash otherwise

## Affected

- `Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 < 23e7150afc70da615857f9f07b494ec58540f096`
- `Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 < 486b2909ac284185900c06f05ffc6eca895f38b8`
- `Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 < e332112255afbce02db67760f5743a1b13aa8541`
- `Linux >= 70839da6360500a82e4d5f78499284474cbed7c1 < c979d8db7b0f293111f2e83795ea353c8ed75de9`
- `Linux 6.11`

## Remediation

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