CVE-2026-97450 ACPICA: validate handler object type in two places

High 8.4 Published 24 Sep 2026 Updated 3 Oct 2026

Missing validation of handler object types in ACPICA can lead to a null pointer dereference, causing a denial of service in the Linux kernel.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-97450?

CVE-2026-97450 is a high-severity vulnerability in Linux, published on 24 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

ACPICA: validate handler object type in two places

ACPICA: validate handler object type in acpi_ev_has_default_handler() and acpi_ev_find_region_handler().

Which versions are affected by CVE-2026-97450?

How do I fix CVE-2026-97450?

Apply the vendor's patch.

Is CVE-2026-97450 being exploited?

There is no known exploitation of CVE-2026-97450 in the wild and no public exploit code.

Sources

Also known as AZL-103889, BELL-CVE-2026-97450, DEBIAN-CVE-2026-97450, GHSA-pxrx-c992-xr3q, UBUNTU-CVE-2026-97450.