# KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure

CVE record · `CVE-2026-98637`

- **Identifiers:** `CVE-2026-98637`
- **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, 15:20 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: `5db1bef933427aa467ad89c7b695a84a6b4afe16 to before bd46b41f412fb81c50bac1a0929ec31320f3a807` (git)
  - affected: `5db1bef933427aa467ad89c7b695a84a6b4afe16 to before f0cd8ffae092cc1b9d7cfa9188ed5a88a374adcb` (git)
  - affected: `5db1bef933427aa467ad89c7b695a84a6b4afe16 to before a1b3c788ad31837e348075e93dbba3f447492776` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.16`
  - unaffected: `before 6.16` (semver)
  - unaffected: `6.18.55 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.9 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 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-2026-98637](https://www.cve.org/CVERecord?id=CVE-2026-98637)
- [NVD: CVE-2026-98637](https://nvd.nist.gov/vuln/detail/CVE-2026-98637)

### References from the CNA

- <https://git.kernel.org/stable/c/bd46b41f412fb81c50bac1a0929ec31320f3a807>
- <https://git.kernel.org/stable/c/f0cd8ffae092cc1b9d7cfa9188ed5a88a374adcb>
- <https://git.kernel.org/stable/c/a1b3c788ad31837e348075e93dbba3f447492776>

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-2026-98637>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98637/>. Everything for agents: <https://agentprime.io/llms.txt>.