CVE-2026-64227

Severity CVSS v4.0:

Pending analysis

Type:

CWE-476 NULL Pointer Dereference

Publication date:

24/07/2026

Last modified:

13/08/2026

Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: driver: Check ACPI_COMPANION() against NULL during probe Since every platform driver can be forced to match a device that doesn&#39;t match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device&#39;s ACPI companion object should verify its presence. Accordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks against NULL to 13 platform drivers handling core ACPI devices. Also change the value returned by the ACPI thermal zone driver when the device&#39;s ACPI companion is not present to -ENODEV for consistency with the other drivers.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.97 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.18.40 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.19 (including)	7.0.11 (excluding)
cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-64227

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools