Vulnerability 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't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device'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's ACPI companion is not present to -ENODEV for consistency with the other drivers.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.7, < 6.12.97 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/34f4d0e4e5065237d15651df759a99e81b7f9f51Patch
- https://git.kernel.org/stable/c/612ddab8fce04394bd7aebe8e0f2599642e30859Patch
- https://git.kernel.org/stable/c/a9451bf561232314755baf69a5916e0ac77f33fcPatch
- https://git.kernel.org/stable/c/e4865a56d013e86e46ea6acea15bb6eae01898ffPatch
FAQ
What is CVE-2026-64227?
CVE-2026-64227 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 do...
How severe is CVE-2026-64227?
CVE-2026-64227 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64227?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.