CVE-2026-100072

ACPI: platform: Use acpi_bus_get_primary_device()

HIGH
7.8
CVSS Score
Published: September 25, 2026 at 01:06 PM UTC
Updated: October 21, 2026 at 06:49 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.6 ≤ v < 7.2.63b95bd160547f56a68aeb972c33ae9511e7a83804.6
Vendor states this is fixed in a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd (fixed)
Vendor states this is fixed in c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71 (fixed)
Vendor states this is fixed in 4.6 (unaffected)
Vendor states this is fixed in 6.12.114 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-416

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