# KVM: nVMX: Force MSR bitmap refresh if runtime eVMCS controls are modified

CVE record · `CVE-2026-98720`

- **Identifiers:** `CVE-2026-98720`
- **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: `502d2bf5f2fd7c05adc2d4f057910bd5d4c4c63e to before 2db11598b59f16ddb6420693f9a4ac4efc3d4789` (git)
  - affected: `502d2bf5f2fd7c05adc2d4f057910bd5d4c4c63e to before f6189e26d0237e47e2f04f9cb1e43fd19a9b2f3a` (git)
  - affected: `502d2bf5f2fd7c05adc2d4f057910bd5d4c4c63e to before 1e497e3bdab6983deb68a1d26b488027deb4527f` (git)
  - affected: `502d2bf5f2fd7c05adc2d4f057910bd5d4c4c63e to before 2abb25273c82061dd4670690c81c319c03740bf6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.17`
  - unaffected: `before 5.17` (semver)
  - unaffected: `6.12.113 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.56 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.10 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 6th percentile, on 8 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-2026-98720](https://www.cve.org/CVERecord?id=CVE-2026-98720)
- [NVD: CVE-2026-98720](https://nvd.nist.gov/vuln/detail/CVE-2026-98720)

### References from the CNA

- <https://git.kernel.org/stable/c/2db11598b59f16ddb6420693f9a4ac4efc3d4789>
- <https://git.kernel.org/stable/c/f6189e26d0237e47e2f04f9cb1e43fd19a9b2f3a>
- <https://git.kernel.org/stable/c/1e497e3bdab6983deb68a1d26b488027deb4527f>
- <https://git.kernel.org/stable/c/2abb25273c82061dd4670690c81c319c03740bf6>

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-2026-98720>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98720/>. Everything for agents: <https://agentprime.io/llms.txt>.