CVE-2021-47253: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: before 5.10.45 (fixed in 5.10.45); from 5.11, before 5.12.12 (fixed in 5.12.12); version 5.13 only

Published 2024-05-21. Last modified 2026-08-11.