---
id: CVE-2024-49921
title: 'drm/amd/display: Check null pointers before used'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: Check null pointers before used

  [WHAT & HOW]
  Poniters, such as dc->clk_mgr, are null checked previously in the same
  function, so Coverity warns "impli…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <
    348f8668dfa77294a277946cb0231c29b5474e1d
  - >-
    Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <
    692e9a20018da7aa225d8dced44803f9852aca81
  - >-
    Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <
    5b35bf1a82eb29841b67ff5643ba83762250fc24
  - >-
    Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <
    be1fb44389ca3038ad2430dac4234669bc177ee3
  - Linux 4.15
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-10-22T13:40:21.671812Z'
published: '2024-10-21'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T12:19:39.338Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-49921'
references:
  - url: 'https://git.kernel.org/stable/c/348f8668dfa77294a277946cb0231c29b5474e1d'
  - url: 'https://git.kernel.org/stable/c/692e9a20018da7aa225d8dced44803f9852aca81'
  - url: 'https://git.kernel.org/stable/c/5b35bf1a82eb29841b67ff5643ba83762250fc24'
  - url: 'https://git.kernel.org/stable/c/be1fb44389ca3038ad2430dac4234669bc177ee3'
tags:
  - cve.org
epss: 0.00291
epssPercentile: 0.21751
ingestedAt: '2026-10-21T12:48:53.728Z'
---

## Overview

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

drm/amd/display: Check null pointers before used

[WHAT & HOW]
Poniters, such as dc->clk_mgr, are null checked previously in the same
function, so Coverity warns "implies that "dc->clk_mgr" might be null".
As a result, these pointers need to be checked when used again.

This fixes 10 FORWARD_NULL issues reported by Coverity.

## Affected

- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 348f8668dfa77294a277946cb0231c29b5474e1d`
- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 692e9a20018da7aa225d8dced44803f9852aca81`
- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 5b35bf1a82eb29841b67ff5643ba83762250fc24`
- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < be1fb44389ca3038ad2430dac4234669bc177ee3`
- `Linux 4.15`

## Remediation

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