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-2021-47184MEDIUM
Linux Linux — i40e: Fix NULL ptr dereference on VSI filter sync
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0025   16.4     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    41c445ff0f482bb6e6b72dcee9e598e20575f743 –  —
  Linux    3.12 –                                      4.14.256
TIMELINE
  Mar 25  Reserved by Linux
  Apr 10  Published (CNA: Linux)
  Aug 4   RESCORED — CVE-2021-47184 (Linux). CVSS 8.8 → 5.5 (NVD).
CWE-476 · CNA: Linux · CVSS v3.1 · 6 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL ptr dereference on VSI filter sync Remove the reason of null pointer dereference in sync VSI filters. Added new I40E_VSI_RELEASING flag to signalize deleting and releasing of VSI resources to sync this thread with sync filters subtask. Without this patch it is possible to start update the VSI filter list after VSI is removed, that's causing a kernel oops.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
March 25, 2024ReservedReserved by Linux
April 10, 2024PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2021-47184 (Linux). CVSS 8.8 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinux41c445ff0f482bb6e6b72dcee9e598e20575f743
LinuxLinux3.124.14.256

Weaknesses

CWE-476

References (6)

Related

Authoritative record: CVE-2021-47184 at cve.org

Vendors: linux

Weaknesses: CWE-476

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-47184 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.