---
title: "CVE-2026-97450: Linux Kernel - Undefined Vulnerability"
description: "Linux kernel contains a validation vulnerability caused by improper handler object type checks in acpi_ev_has_default_handler() and acpi_ev_find_region_handler(), letting attackers potentially cause undefined impact, exploit requires unspecified conditions."
url: https://panop.io/threat-heartbeat/CVE-2026-97450/
---

# CVE-2026-97450 Linux Kernel - Undefined Vulnerability

Linux kernel contains a validation vulnerability caused by improper handler object type checks in acpi\_ev\_has\_default\_handler() and acpi\_ev\_find\_region\_handler(), letting attackers potentially cause undefined impact, exploit requires unspecified conditions.

CVSS base score 8.4 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-97450)

## Details

Type

Undefined Vulnerability

CVSS vector

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

Published

24 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-97450](https://nvd.nist.gov/vuln/detail/CVE-2026-97450)
- [https://git.kernel.org/stable/c/254e304f68dc079906ce2df4723548ffe35f682a](https://git.kernel.org/stable/c/254e304f68dc079906ce2df4723548ffe35f682a)
- [https://git.kernel.org/stable/c/7af2da201623ab5bc0773bd3eeb2f2345cfa1c4a](https://git.kernel.org/stable/c/7af2da201623ab5bc0773bd3eeb2f2345cfa1c4a)
- [https://git.kernel.org/stable/c/9d9fbf6b895a23238e4a7b1a3230f648f0d952a1](https://git.kernel.org/stable/c/9d9fbf6b895a23238e4a7b1a3230f648f0d952a1)
- [https://git.kernel.org/stable/c/e98825650c2eb1605c707fd1391ceed65bb8e481](https://git.kernel.org/stable/c/e98825650c2eb1605c707fd1391ceed65bb8e481)
- [https://git.kernel.org/stable/c/4c977d57a784682dc8c6cce2f9253ef44ec28ae8](https://git.kernel.org/stable/c/4c977d57a784682dc8c6cce2f9253ef44ec28ae8)
- [https://git.kernel.org/stable/c/bfd981d35ed3156414fd35b4fe311d5d25cbfca6](https://git.kernel.org/stable/c/bfd981d35ed3156414fd35b4fe311d5d25cbfca6)
- [https://git.kernel.org/stable/c/c5296da2d516707862f8a2dbb4b515f777e5294f](https://git.kernel.org/stable/c/c5296da2d516707862f8a2dbb4b515f777e5294f)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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