Answer in brief
CVE-2021-47253 records a Unknown severity vulnerability in drm/amd/display: Fix potential memory leak in DMUB hw_init. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8c7aea404d55dabc71df792c850aed5536ece2fd <9e8c2af010463197315fa54a6c17e74988b5259c || >=8c7aea404d55dabc71df792c850aed5536ece2fd <aa000f828e60ac15d6340f606ec4a673966f5b0b || >=8c7aea404d55dabc71df792c850aed5536ece2fd <c5699e2d863f58221044efdc3fa712dd32d55cde | 9e8c2af010463197315fa54a6c17e74988b5259c, aa000f828e60ac15d6340f606ec4a673966f5b0b, c5699e2d863f58221044efdc3fa712dd32d55cde |
| Linux/Linuxgeneric | 5.6 | Not reported |
Published upstream
May 21, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-47253 records a Unknown severity vulnerability in drm/amd/display: Fix potential memory leak in DMUB hw_init. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8c7aea404d55dabc71df792c850aed5536ece2fd <9e8c2af010463197315fa54a6c17e74988b5259c || >=8c7aea404d55dabc71df792c850aed5536ece2fd <aa000f828e60ac15d6340f606ec4a673966f5b0b || >=8c7aea404d55dabc71df792c850aed5536ece2fd <c5699e2d863f58221044efdc3fa712dd32d55cde | 9e8c2af010463197315fa54a6c17e74988b5259c, aa000f828e60ac15d6340f606ec4a673966f5b0b, c5699e2d863f58221044efdc3fa712dd32d55cde |
| Linux/Linuxgeneric | 5.6 | Not reported |
Published upstream
May 21, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.