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-2021-46967MEDIUM
Linux Linux — vhost-vdpa: fix vm_flags for virtqueue doorbell mapping
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0023   14.2     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9 –  —
  Linux    5.8 –                                       5.10.36
TIMELINE
  Feb 27  Reserved by Linux
  Feb 27  Published (CNA: Linux)
  Aug 4   RESCORED — CVE-2021-46967 (Linux). CVSS 7.8 → 5.5 (NVD).
CNA: Linux · CVSS v3.1 · 4 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: vhost-vdpa: fix vm_flags for virtqueue doorbell mapping The virtqueue doorbell is usually implemented via registeres but we don't provide the necessary vma->flags like VM_PFNMAP. This may cause several issues e.g when userspace tries to map the doorbell via vhost IOTLB, kernel may panic due to the page is not backed by page structure. This patch fixes this by setting the necessary vm_flags. With this patch, try to map doorbell via IOTLB will fail with bad address.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
February 27, 2024ReservedReserved by Linux
February 27, 2024PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2021-46967 (Linux). CVSS 7.8 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinuxddd89d0a059d8e9740c75a97e0efe9bf07ee51f9
LinuxLinux5.85.10.36

References (4)

Related

Authoritative record: CVE-2021-46967 at cve.org

Vendors: linux

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-46967 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.