boxscore/security
CVE · referencelatest edition

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.

CVE-2021-47296MEDIUM
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).
CWE-401 · CNA: Linux · CVSS v3.1 · 5 references · NVD status: Modified

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
DateEventDetail
May 21, 2024ReservedReserved by Linux
May 21, 2024PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2021-47296 (Linux). CVSS 7.8 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinuxb3cebfe8c1cadf1817939dcc3688a2504a69c662
LinuxLinux4.184.19.199

Weaknesses

CWE-401

References (5)

Related

Authoritative record: CVE-2021-47296 at cve.org

Vendors: linux

Weaknesses: CWE-401

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.