# KVM: SEV: Do cache maintenance on the source VM \*before\* clearing SEV state

CVE record · `CVE-2026-98718`

- **Identifiers:** `CVE-2026-98718`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 18 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 18 Oct 2026, 15:46 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: `37dfb676fafd1eef36fe0bb649607afbb0d5521b to before 8b7d4f68fef96cebe0b6dbb6e5607772337f7369` (git)
  - affected: `d4cc2dff12116a700add601c0262132cc26e1b2c to before de83ff6a4d8f3618473bedb3c4400020c22e8a8a` (git)
  - affected: `93de2a6a4b91b72607136dd656edf03fb399d27f to before 973ea70393e885e540f714904e51bc6cac80e3d7` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.18.55 to before 6.18.56` (semver)
  - affected: `7.2.9 to before 7.2.10` (semver)
  - Other versions: unaffected

## 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 7 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 18 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98718](https://www.cve.org/CVERecord?id=CVE-2026-98718)
- [NVD: CVE-2026-98718](https://nvd.nist.gov/vuln/detail/CVE-2026-98718)

### References from the CNA

- <https://git.kernel.org/stable/c/8b7d4f68fef96cebe0b6dbb6e5607772337f7369>
- <https://git.kernel.org/stable/c/de83ff6a4d8f3618473bedb3c4400020c22e8a8a>
- <https://git.kernel.org/stable/c/973ea70393e885e540f714904e51bc6cac80e3d7>

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-2026-98718>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98718/>. Everything for agents: <https://agentprime.io/llms.txt>.