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-2021-38206

CVE-2021-38206MEDIUM

n/a n/a — The mac80211 subsystem in the Linux kernel before 5.12.13, when a device supporting only 5 GHz is used, allows attackers to cause a denia…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0027   17.7     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Aug 8   Reserved by mitre
  Aug 8   Published (CNA: mitre)
  Oct 8   ENRICHED — CVE-2021-38206. Received CVSS 5.5 and CPE data from NVD.

CWE-476 · CNA: mitre · CVSS v3.1 · 2 references · NVD status: Modified

Description

The mac80211 subsystem in the Linux kernel before 5.12.13, when a device supporting only 5 GHz is used, allows attackers to cause a denial of service (NULL pointer dereference in the radiotap parser) by injecting a frame with 802.11a rates.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 8, 2021	Reserved	Reserved by mitre
August 8, 2021	Published	Published (CNA: mitre)
October 8, 2026	ENRICHED	ENRICHED — CVE-2021-38206. Received CVSS 5.5 and CPE data from NVD.

Affected

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

Weaknesses

CWE-476

References (2)

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13 [Mailing List, Patch, Vendor Advisory]
https://github.com/torvalds/linux/commit/bddc0c411a45d3718ac535a070f349be8eca8d48 [Patch, Third Party Advisory]

Authoritative record: CVE-2021-38206 at cve.org

Weaknesses: CWE-476

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-38206 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.