CVE-2021-47253

MEDIUM

Linux Kernel < 5.10.45 - Use-After-Free in DRM AMD Display DMUB

Title source: llm

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.

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/9e8c2af010463197315fa54a6c17e74988b5259c

Patch

https://git.kernel.org/stable/c/aa000f828e60ac15d6340f606ec4a673966f5b0b

Patch

https://git.kernel.org/stable/c/c5699e2d863f58221044efdc3fa712dd32d55cde

Scores

CVSS v3 5.5

EPSS 0.0022

EPSS Percentile 12.9%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-401

Status published

Products (10)

Linux/Linux < 4.15

Linux/Linux 4.15

Linux/Linux 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c - 9e8c2af010463197315fa54a6c17e74988b5259c

Linux/Linux 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c - aa000f828e60ac15d6340f606ec4a673966f5b0b

Linux/Linux 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c - c5699e2d863f58221044efdc3fa712dd32d55cde

Linux/Linux 5.10.45 - 5.10.*

Linux/Linux 5.12.12 - 5.12.*

Linux/Linux 5.13

linux/linux_kernel 5.13 rc1 (4 CPE variants)

linux/linux_kernel < 5.10.45

Published May 21, 2024

Tracked Since Feb 18, 2026