# ACPI: processor: validate MADT IOAPIC entry bounds

CVE record · `CVE-2026-92522`

- **Identifiers:** `CVE-2026-92522`
- **State:** Confirmed
- **Severity:** CVSS 7.3 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:10 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `ecf5636dcd59cd5508641f995cc4c2bafedbb995 to before 5601bd81bc290a724ed47797d22c16cba4d7ed9f` (git)
  - affected: `ecf5636dcd59cd5508641f995cc4c2bafedbb995 to before ff82e3374e9103d046b2a82f4315d9a422ff097d` (git)
  - affected: `ecf5636dcd59cd5508641f995cc4c2bafedbb995 to before 2a5520065e76000f8c979d3d7b3d861ccaaecf1e` (git)
  - affected: `ecf5636dcd59cd5508641f995cc4c2bafedbb995 to before 8e67b58c04990817ac2dbf8ae03353be6a358cd4` (git)
  - affected: `ecf5636dcd59cd5508641f995cc4c2bafedbb995 to before 74d84320f8e37955eb286a7777843d554e6e75b2` (git)
  - affected: `ecf5636dcd59cd5508641f995cc4c2bafedbb995 to before 4d8ecaa332c163f2b44aa5027bf061950b71b5f3` (git)
  - affected: `ecf5636dcd59cd5508641f995cc4c2bafedbb995 to before 355bee5f11acb116cd256588631b4028ca562646` (git)
  - affected: `ecf5636dcd59cd5508641f995cc4c2bafedbb995 to before 2c50ffdc73f3a70d745d249f509fc290754121e6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.0`
  - unaffected: `before 4.0` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.3 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0014, the 3rd percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-92522](https://www.cve.org/CVERecord?id=CVE-2026-92522)
- [NVD: CVE-2026-92522](https://nvd.nist.gov/vuln/detail/CVE-2026-92522)

### References from the CNA

- <https://git.kernel.org/stable/c/5601bd81bc290a724ed47797d22c16cba4d7ed9f>
- <https://git.kernel.org/stable/c/ff82e3374e9103d046b2a82f4315d9a422ff097d>
- <https://git.kernel.org/stable/c/2a5520065e76000f8c979d3d7b3d861ccaaecf1e>
- <https://git.kernel.org/stable/c/8e67b58c04990817ac2dbf8ae03353be6a358cd4>
- <https://git.kernel.org/stable/c/74d84320f8e37955eb286a7777843d554e6e75b2>
- <https://git.kernel.org/stable/c/4d8ecaa332c163f2b44aa5027bf061950b71b5f3>
- <https://git.kernel.org/stable/c/355bee5f11acb116cd256588631b4028ca562646>
- <https://git.kernel.org/stable/c/2c50ffdc73f3a70d745d249f509fc290754121e6>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-92522>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-92522/>. Everything for agents: <https://agentprime.io/llms.txt>.