ACPI: platform: Use acpi_bus_get_primary_device() (CVE-2026-100072) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-100072

ACPI: platform: Use acpi_bus_get_primary_device()

Answer in brief

CVE-2026-100072 records a Unknown severity vulnerability in ACPI: platform: Use acpi_bus_get_primary_device(). 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 Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 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	>=3b95bd160547f56a68aeb972c33ae9511e7a8380 <c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71 \|\| >=3b95bd160547f56a68aeb972c33ae9511e7a8380 <a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd	c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71, a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd
Linux/Linuxgeneric	4.6	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ACPI: platform: Use acpi_bus_get_primary_device() The acpi_get_first_physical_node() usage in acpi_platform_fill_resource() and acpi_create_platform_device() is generally unsafe because in theory the device returned by it may be freed at any time [1]. It is also inefficient because acpi_get_first_physical_node() is called multiple times for the same argument which can be avoided. Address these issues by using acpi_bus_get_primary_device() instead of acpi_get_first_physical_node() and adjusting the code to call it just once at the beginning of and acpi_create_platform_device() and drop the device reference acquired by it upon the return from that function.

Quoted source text, attributed separately from HOL analysis.