drm/amd/display: check if dml21_add_phantom_plane() is successful (CVE-2026-80705) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80705

drm/amd/display: check if dml21_add_phantom_plane() is successful

Answer in brief

CVE-2026-80705 records a Unknown severity vulnerability in drm/amd/display: check if dml21_add_phantom_plane() is successful. 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.

Published Aug 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

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.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=70839da6360500a82e4d5f78499284474cbed7c1 <062cfd6c678f6647c8841f684d6dadab08d95512 \|\| >=70839da6360500a82e4d5f78499284474cbed7c1 <000acb4ce7fb9feba3072ce468ad681f6585cd5d	062cfd6c678f6647c8841f684d6dadab08d95512, 000acb4ce7fb9feba3072ce468ad681f6585cd5d
Linux/Linuxgeneric	6.11	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 062cfd6c678f6647c8841f684d6dadab08d95512 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check if dml21_add_phantom_plane() is successful Verify that the phantom plane was allocated to avoid a later segfault. (cherry picked from commit 5adb54abe5a8e82cbff7f8806db30a5f4924329f)

Quoted source text, attributed separately from HOL analysis.