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 — 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).
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
| Date | Event | Detail |
| March 25, 2024 | Reserved | Reserved by Linux |
| April 10, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2021-47184 (Linux). CVSS 8.8 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 41c445ff0f482bb6e6b72dcee9e598e20575f743 | — |
| Linux | Linux | — | 3.12 | 4.14.256 |
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.