CVE record · CVE-2026-98638

KVM: arm64: Validate the SVE vector length in pkvm_vcpu_init_sve()

No CVSS scoreEPSS 0.0017 · 5th percentile

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	Product	Versions
Linux	Linux	affected 5db1bef933427aa467ad89c7b695a84a6b4afe16 to before faf66e55e87498ab4bf88cdf9a629e61b3f2d3bc git affected 5db1bef933427aa467ad89c7b695a84a6b4afe16 to before bae3e4493046de4fefa15f809d9b8dc114e84a3d git affected 5db1bef933427aa467ad89c7b695a84a6b4afe16 to before 2a2eb10795a1e495aebc7f829ccecb72c05b4fd9 git Other versions: unaffected
Linux	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

Identifiers: CVE-2026-98638
CNA: Linux
Tags: Linux kernel
Published: 18 Oct 2026
Updated: 19 Oct 2026

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

References from the CNA

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.