Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0023 14.6 —
AFFECTED
Product Versions Fixed
Linux b3cebfe8c1cadf1817939dcc3688a2504a69c662 – —
Linux 4.18 – 4.19.199
TIMELINE
May 21 Reserved by Linux
May 21 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2021-47296 (Linux). CVSS 7.8 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
vcpu_put is not called if the user copy fails. This can result in preempt
notifier corruption and crashes, among other issues.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| May 21, 2024 | Reserved | Reserved by Linux |
| May 21, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2021-47296 (Linux). CVSS 7.8 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | b3cebfe8c1cadf1817939dcc3688a2504a69c662 | — |
| Linux | Linux | — | 4.18 | 4.19.199 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-47296 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 Wednesday, August 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.