---
id: CVE-2024-27041
title: 'drm/amd/display: fix NULL checks for adev->dm.dc in amdgpu_dm_fini()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: fix NULL checks for adev->dm.dc in amdgpu_dm_fini()

  Since 'adev->dm.dc' in amdgpu_dm_fini() might turn out to be NULL
  before the call to dc_enable_dmu…
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: adp
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 <
    cef0f2fe65ccee638e48fd5c1d590a3c0539acdd
  - >-
    Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 <
    e040f1fbe9abae91b12b074cfc3bbb5367b79811
  - >-
    Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 <
    ca2eb375db76fd50f31afdd67d6ca4f833254957
  - >-
    Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 <
    1c62697e4086de988b31124fb8c79c244ea05f2b
  - >-
    Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 <
    2a3cfb9a24a28da9cc13d2c525a76548865e182c
  - Linux 5.14
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-05-24T14:44:31.681685Z'
published: '2024-05-01'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T12:18:09.560Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-27041'
references:
  - url: 'https://git.kernel.org/stable/c/cef0f2fe65ccee638e48fd5c1d590a3c0539acdd'
  - url: 'https://git.kernel.org/stable/c/e040f1fbe9abae91b12b074cfc3bbb5367b79811'
  - url: 'https://git.kernel.org/stable/c/ca2eb375db76fd50f31afdd67d6ca4f833254957'
  - url: 'https://git.kernel.org/stable/c/1c62697e4086de988b31124fb8c79c244ea05f2b'
  - url: 'https://git.kernel.org/stable/c/2a3cfb9a24a28da9cc13d2c525a76548865e182c'
tags:
  - cve.org
epss: 0.00272
epssPercentile: 0.19627
ingestedAt: '2026-11-03T12:44:28.806Z'
---

## Overview

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

drm/amd/display: fix NULL checks for adev->dm.dc in amdgpu_dm_fini()

Since 'adev->dm.dc' in amdgpu_dm_fini() might turn out to be NULL
before the call to dc_enable_dmub_notifications(), check
beforehand to ensure there will not be a possible NULL-ptr-deref
there.

Also, since commit 1e88eb1b2c25 ("drm/amd/display: Drop
CONFIG_DRM_AMD_DC_HDCP") there are two separate checks for NULL in
'adev->dm.dc' before dc_deinit_callbacks() and dc_dmub_srv_destroy().
Clean up by combining them all under one 'if'.

Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.

## Affected

- `Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 < cef0f2fe65ccee638e48fd5c1d590a3c0539acdd`
- `Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 < e040f1fbe9abae91b12b074cfc3bbb5367b79811`
- `Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 < ca2eb375db76fd50f31afdd67d6ca4f833254957`
- `Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 < 1c62697e4086de988b31124fb8c79c244ea05f2b`
- `Linux >= 81927e2808be5adace93c2012d45d6938d3a7aa0 < 2a3cfb9a24a28da9cc13d2c525a76548865e182c`
- `Linux 5.14`

## Remediation

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