CVE-2021-47253

kernel: drm/amd/display: Fix potential memory leak in DMUB hw_init

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Severity

Low

Red Hat Product Security

5.1

CVSS 3.1

Review impact separately from score.

Published · May 21, 2024

Updated · November 21, 2025

Description

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

drm/amd/display: Fix potential memory leak in DMUB hw_init

[Why] On resume we perform DMUB hw_init which allocates memory: dm_resume->dm_dmub_hw_init->dc_dmub_srv_create->kzalloc That results in memory leak in suspend/resume scenarios.

[How] Allocate memory for the DC wrapper to DMUB only if it was not allocated before. No need to reallocate it on suspend/resume.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L

CWE-402 · Transmission of Private Resources into a New Sphere ('Resource Leak')