CVE-2021-3483 — Security Box Score

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-2021-3483HIGH

Linux kernel — A flaw was found in the Nosy driver in the Linux kernel.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  H  H    7.8   .0036   29.3     —

AFFECTED
  Product  Versions     Fixed
  kernel   unspecified  —

TIMELINE
  Apr 6   Reserved by redhat
  May 17  Published (CNA: redhat)
  Aug 5   ENRICHED — CVE-2021-3483 (Linux kernel). Received CVSS 7.8 and CPE data from NVD.

CWE-416 · CNA: redhat · CVSS v3.1 · 5 references · NVD status: Modified

Description

A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions before kernel 5.12-rc6 are affected

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 6, 2021	Reserved	Reserved by redhat
May 17, 2021	Published	Published (CNA: redhat)
August 5, 2026	ENRICHED	ENRICHED — CVE-2021-3483 (Linux kernel). Received CVSS 7.8 and CPE data from NVD.

Affected

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

Weaknesses

CWE-416

References (5)

http://www.openwall.com/lists/oss-security/2021/04/07/1 [Mailing List, Patch, Third Party Advisory]
https://bugzilla.redhat.com/show_bug.cgi?id=1948045 [Issue Tracking, Patch, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html [Mailing List, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html [Mailing List, Third Party Advisory]
https://security.netapp.com/advisory/ntap-20210629-0002/ [Third Party Advisory]

Authoritative record: CVE-2021-3483 at cve.org

Vendors: linux

Weaknesses: CWE-416

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-3483 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.