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-2022-42720

CVE-2022-42720HIGH

n/a n/a — Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be u…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  H  H    7.8   .0090   59.0     —

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

TIMELINE
  Oct 10  Reserved by mitre
  Oct 13  Published (CNA: mitre)
  Oct 14  EXPLOIT PUBLISHED — CVE-2022-42720. Public exploit reference added.

CWE-416 · CNA: mitre · CVSS v3.1 · 11 references · NVD status: Modified

Description

Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to trigger use-after-free conditions to potentially execute code.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
October 10, 2022	Reserved	Reserved by mitre
October 13, 2022	Published	Published (CNA: mitre)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2022-42720. Public exploit reference added.

Affected

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

Weaknesses

CWE-416

References (11)

http://packetstormsecurity.com/files/169951/Kernel-Live-Patch-Security-Notice-LSN-0090-1.html [Third Party Advisory, VDB Entry]
http://www.openwall.com/lists/oss-security/2022/10/13/5 [Exploit, Mailing List, Third Party Advisory]
https://bugzilla.suse.com/show_bug.cgi?id=1204059 [Issue Tracking, Patch, Third Party Advisory]
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=0b7808818cb9df6680f98996b8e9a439fa7bcc2f [Mailing List, Patch, Vendor Advisory]
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html [Mailing List, Third Party Advisory]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/
https://security.netapp.com/advisory/ntap-20230203-0008/ [Third Party Advisory]
https://www.debian.org/security/2022/dsa-5257 [Third Party Advisory]

Authoritative record: CVE-2022-42720 at cve.org

Weaknesses: CWE-416

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2022-42720 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.