ACPI: platform: Use acpi_bus_get_primary_device()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-100072
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 14:17:13 UTC
Updated2026-09-30 14:10:59 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.001450000 probability, percentile 0.031460000 (date 2026-09-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 3b95bd160547f56a68aeb972c33ae9511e7a8380 c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71 git Not specified
CNA Linux Linux affected 3b95bd160547f56a68aeb972c33ae9511e7a8380 a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd git Not specified
CNA Linux Linux affected 4.6 Not specified
CNA Linux Linux unaffected 4.6 semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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