Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2022-3621

CVE-2022-3621MEDIUM

Linux Kernel nilfs2 inode.c nilfs_bmap_lookup_at_level null pointer dereference

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  N  N  H    6.5   .0173   77.2     —

AFFECTED
  Product  Versions  Fixed
  Kernel   n/a –     —

TIMELINE
  Oct 20  Reserved by VulDB
  Oct 20  Published (CNA: VulDB)
  Oct 14  RESCORED — CVE-2022-3621 (Linux Kernel). CVSS 4.3 → 6.5 (NVD).

CWE-404, CWE-476 · CNA: VulDB · CVSS v3.1 · 5 references · NVD status: Modified

Description

A vulnerability was found in Linux Kernel. It has been classified as problematic. Affected is the function nilfs_bmap_lookup_at_level of the file fs/nilfs2/inode.c of the component nilfs2. The manipulation leads to null pointer dereference. It is possible to launch the attack remotely. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211920.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
October 20, 2022	Reserved	Reserved by VulDB
October 20, 2022	Published	Published (CNA: VulDB)
October 14, 2026	RESCORED	RESCORED — CVE-2022-3621 (Linux Kernel). CVSS 4.3 → 6.5 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Linux	Kernel	—	n/a	—

Weaknesses

CWE-404 · CWE-476

References (5)

https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=21a87d88c2253350e115029f14fe2a10a7e6c856 [Mailing List, Patch, Vendor Advisory]
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html [Mailing List, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html [Mailing List, Third Party Advisory]
https://vuldb.com/?id.211920 [Third Party Advisory]

Authoritative record: CVE-2022-3621 at cve.org

Vendors: linux

Weaknesses: CWE-404 · CWE-476

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2022-3621 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 Monday, October 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.