---
id: CVE-2024-49920
title: 'drm/amd/display: Check null pointers before multiple uses'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amd/display: Check null pointers before multiple uses

  [WHAT & HOW]
  Poniters, such as stream_enc and dc->bw_vbios, are null checked previously
  in the same function,…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <
    4f51f6d23c5856f105110531f81d84e78e462005
  - >-
    Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <
    26787fb6c2b2ee0d1a7e1574b36f4711ae40fe27
  - >-
    Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <
    fdd5ecbbff751c3b9061d8ebb08e5c96119915b4
  - Linux 4.15
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-10-22T13:40:29.310714Z'
published: '2024-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:35:22.119Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-49920'
references:
  - url: 'https://git.kernel.org/stable/c/4f51f6d23c5856f105110531f81d84e78e462005'
  - url: 'https://git.kernel.org/stable/c/26787fb6c2b2ee0d1a7e1574b36f4711ae40fe27'
  - url: 'https://git.kernel.org/stable/c/fdd5ecbbff751c3b9061d8ebb08e5c96119915b4'
tags:
  - cve.org
epss: 0.00298
epssPercentile: 0.22314
ingestedAt: '2026-10-21T12:48:53.729Z'
---

## Overview

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

drm/amd/display: Check null pointers before multiple uses

[WHAT & HOW]
Poniters, such as stream_enc and dc->bw_vbios, are null checked previously
in the same function, so Coverity warns "implies that stream_enc and
dc->bw_vbios might be null". They are used multiple times in the
subsequent code and need to be checked.

This fixes 10 FORWARD_NULL issues reported by Coverity.

## Affected

- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 4f51f6d23c5856f105110531f81d84e78e462005`
- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 26787fb6c2b2ee0d1a7e1574b36f4711ae40fe27`
- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < fdd5ecbbff751c3b9061d8ebb08e5c96119915b4`
- `Linux 4.15`

## Remediation

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