🔐 CVE Alert

CVE-2026-64227

UNKNOWN 0.0

ACPI: driver: Check ACPI_COMPANION() against NULL during probe

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

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.

Vendor linux
Product linux
Ecosystems
Industries
Technology
Published Jul 24, 2026
Last Updated Jul 27, 2026
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Affected Versions

Linux / Linux
5829046825ac89fffc60f2670bc564fda2c0155a < a9451bf561232314755baf69a5916e0ac77f33fc 5829046825ac89fffc60f2670bc564fda2c0155a < 34f4d0e4e5065237d15651df759a99e81b7f9f51 5829046825ac89fffc60f2670bc564fda2c0155a < 612ddab8fce04394bd7aebe8e0f2599642e30859 5829046825ac89fffc60f2670bc564fda2c0155a < e4865a56d013e86e46ea6acea15bb6eae01898ff
Linux / Linux
6.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗
git.kernel.org: https://git.kernel.org/stable/c/a9451bf561232314755baf69a5916e0ac77f33fc git.kernel.org: https://git.kernel.org/stable/c/34f4d0e4e5065237d15651df759a99e81b7f9f51 git.kernel.org: https://git.kernel.org/stable/c/612ddab8fce04394bd7aebe8e0f2599642e30859 git.kernel.org: https://git.kernel.org/stable/c/e4865a56d013e86e46ea6acea15bb6eae01898ff