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Vulnerability record · CVE-2026-100072 · published 25 September 2026

CVE-2026-100072: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.16% · top 95.2% CWE-416 · Use after free
7.8CVSS 3.1 base score
0.16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
21 Oct 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/527a497fb2ef77a95170eefe2007e2c4c957bd2c Patch
https://git.kernel.org/stable/c/a75e5de593ef158feb17989bff7730c5a3d82503 Patch
https://git.kernel.org/stable/c/a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd Patch
https://git.kernel.org/stable/c/c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-100072), CISA KEV, FIRST EPSS (scores of 2026-11-11). This page is refreshed as NVD updates the record.