CVE-2021-47253

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

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/9e8c2af010463197315fa54a6c17e74988b5259c patch
https://git.kernel.org/stable/c/aa000f828e60ac15d6340f606ec4a673966f5b0b patch
https://git.kernel.org/stable/c/c5699e2d863f58221044efdc3fa712dd32d55cde patch

Frequently Asked Questions

What is the severity of CVE-2021-47253?
CVE-2021-47253 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47253?
To fix CVE-2021-47253, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47253 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47253 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47253?
CVE-2021-47253 affects Linux Linux, Linux Linux.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.