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-2023-6932

CVE-2023-6932HIGH

Linux Kernel — Use-after-free in Linux kernel's ipv4: igmp component

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   L   N  U  H  H  H    7.0   .0037   29.1     —

AFFECTED
  Product  Versions  Fixed
  Kernel   2.6.12 –  —

TIMELINE
  Dec 18  Reserved by Google
  Dec 19  Published (CNA: Google)
  Oct 14  RESCORED — CVE-2023-6932 (Linux Kernel). CVSS 7.8 → 7 (NVD).

CWE-416 · CNA: Google · CVSS v3.1 · 9 references · NVD status: Modified

Description

A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
December 18, 2023	Reserved	Reserved by Google
December 19, 2023	Published	Published (CNA: Google)
October 14, 2026	RESCORED	RESCORED — CVE-2023-6932 (Linux Kernel). CVSS 7.8 → 7 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Linux	Kernel	—	2.6.12	—

Weaknesses

CWE-416

References (9)

http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html [Third Party Advisory]
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-613116.html
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=e2b706c691905fe78468c361aaabc719d0a496f1 [Mailing List, Patch]
https://kernel.dance/e2b706c691905fe78468c361aaabc719d0a496f1 [Patch]
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html [Mailing List, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html [Mailing List, Third Party Advisory]

Authoritative record: CVE-2023-6932 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-2023-6932 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.