Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2021-38198
n/a n/a — arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading t…
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0045 37.7 —
AFFECTED
Product Versions Fixed
n/a n/a – —
TIMELINE
Aug 8 Reserved by mitre
Aug 8 Published (CNA: mitre)
Oct 8 ENRICHED — CVE-2021-38198. Received CVSS 5.5 and CPE data from NVD.
Oct 8 EXPLOIT PUBLISHED — CVE-2021-38198. Public exploit reference added.
Description
arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| August 8, 2021 | Reserved | Reserved by mitre |
| August 8, 2021 | Published | Published (CNA: mitre) |
| October 8, 2026 | ENRICHED | ENRICHED — CVE-2021-38198. Received CVSS 5.5 and CPE data from NVD. |
| October 8, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2021-38198. Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| n/a | n/a | — | n/a | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-38198 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
