---
id: CVE-2023-53498
title: 'drm/amd/display: Fix potential null dereference'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: Fix potential null dereference

  The adev->dm.dc pointer can be NULL and dereferenced in amdgpu_dm_fini()
  without checking.

  Add a NULL pointer check be…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 <
    624a60911b71af08a912ee8a296b271b3e7b34ab
  - >-
    Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 <
    4b1afffdd94093118b3cc235ef2b4d2520fb4950
  - >-
    Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 <
    b75aaebac265e3f29863699d9a929fdfba13d0a4
  - >-
    Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 <
    281933f36a53fed1c2993a92cf1edfb424595474
  - >-
    Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 <
    d4b749771fed3f99bbe8880eaab32a05ede0e5fa
  - >-
    Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 <
    52f1783ff4146344342422c1cd94fcb4ce39b6fe
  - Linux 5.6
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:22:27.012814Z'
published: '2025-10-01'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:31:11.985Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-53498'
references:
  - url: 'https://git.kernel.org/stable/c/624a60911b71af08a912ee8a296b271b3e7b34ab'
  - url: 'https://git.kernel.org/stable/c/4b1afffdd94093118b3cc235ef2b4d2520fb4950'
  - url: 'https://git.kernel.org/stable/c/b75aaebac265e3f29863699d9a929fdfba13d0a4'
  - url: 'https://git.kernel.org/stable/c/281933f36a53fed1c2993a92cf1edfb424595474'
  - url: 'https://git.kernel.org/stable/c/d4b749771fed3f99bbe8880eaab32a05ede0e5fa'
  - url: 'https://git.kernel.org/stable/c/52f1783ff4146344342422c1cd94fcb4ce39b6fe'
tags:
  - cve.org
epss: 0.0016
epssPercentile: 0.05165
ingestedAt: '2026-11-05T22:38:31.803Z'
---

## Overview

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

drm/amd/display: Fix potential null dereference

The adev->dm.dc pointer can be NULL and dereferenced in amdgpu_dm_fini()
without checking.

Add a NULL pointer check before calling dc_dmub_srv_destroy().

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

## Affected

- `Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 < 624a60911b71af08a912ee8a296b271b3e7b34ab`
- `Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 < 4b1afffdd94093118b3cc235ef2b4d2520fb4950`
- `Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 < b75aaebac265e3f29863699d9a929fdfba13d0a4`
- `Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 < 281933f36a53fed1c2993a92cf1edfb424595474`
- `Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 < d4b749771fed3f99bbe8880eaab32a05ede0e5fa`
- `Linux >= 9a71c7d31734f74549ad2bcd652c403c71e7c8d1 < 52f1783ff4146344342422c1cd94fcb4ce39b6fe`
- `Linux 5.6`

## Remediation

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