# x86/mm/pat: Take cpa_lock around large-page collapse

CVE record · `CVE-2026-93066`

- **Identifiers:** `CVE-2026-93066`
- **State:** Confirmed
- **Severity:** No CVSS score
- **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: `41d88484c71cd4f659348da41b7b5b3dbd3be1f6 to before 591b6fac9df3f43522e8ff6eed8662f8b6f1a124` (git)
  - affected: `41d88484c71cd4f659348da41b7b5b3dbd3be1f6 to before fb97d1d6c20692e15247fa5c8b894b2325e38aee` (git)
  - affected: `41d88484c71cd4f659348da41b7b5b3dbd3be1f6 to before 1aac65f3e651334259ecb2a5f5ddb81c01f02599` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.15`
  - unaffected: `before 6.15` (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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0017, the 5th percentile, on 14 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-2026-93066](https://www.cve.org/CVERecord?id=CVE-2026-93066)
- [NVD: CVE-2026-93066](https://nvd.nist.gov/vuln/detail/CVE-2026-93066)

### References from the CNA

- <https://git.kernel.org/stable/c/591b6fac9df3f43522e8ff6eed8662f8b6f1a124>
- <https://git.kernel.org/stable/c/fb97d1d6c20692e15247fa5c8b894b2325e38aee>
- <https://git.kernel.org/stable/c/1aac65f3e651334259ecb2a5f5ddb81c01f02599>

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-2026-93066>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93066/>. Everything for agents: <https://agentprime.io/llms.txt>.