CVE-2023-4244 — 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-2023-4244HIGH

Linux Kernel — Use-after-free in Linux kernel's netfilter: nf_tables component

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   L   N  U  H  H  H    7.0   .0023   13.9     —

AFFECTED
  Product  Versions  Fixed
  Kernel   0.0 –     —

TIMELINE
  Aug 8   Reserved by Google
  Sep 6   Published (CNA: Google)
  Jul 30  RESCORED — CVE-2023-4244 (Linux Kernel). CVSS 7.8 → 7 (NVD).

CWE-416 · CNA: Google · CVSS v3.1 · 4 references · NVD status: Analyzed

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability. We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 8, 2023	Reserved	Reserved by Google
September 6, 2023	Published	Published (CNA: Google)
July 30, 2026	RESCORED	RESCORED — CVE-2023-4244 (Linux Kernel). CVSS 7.8 → 7 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Linux	Kernel	—	0.0	—

Weaknesses

CWE-416

References (4)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8 [Issue Tracking, Mailing List, Patch, Vendor Advisory]
https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8 [Patch, Vendor Advisory]
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html [Mailing List, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html [Mailing List, Third Party Advisory]

Authoritative record: CVE-2023-4244 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-2023-4244 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.