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-2023-5197

CVE-2023-5197MEDIUM

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   L   L   N  U  L  L  H    6.6   .0037   29.2     —

AFFECTED
  Product  Versions  Fixed
  Kernel   5.9 –     —

TIMELINE
  Sep 26  Reserved by Google
  Sep 26  Published (CNA: Google)
  Oct 14  RESCORED — CVE-2023-5197 (Linux Kernel). CVSS 7.8 → 6.6 (NVD).

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

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Addition and removal of rules from chain bindings within the same transaction causes leads to use-after-free. We recommend upgrading past commit f15f29fd4779be8a418b66e9d52979bb6d6c2325.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 26, 2023	Reserved	Reserved by Google
September 26, 2023	Published	Published (CNA: Google)
October 14, 2026	RESCORED	RESCORED — CVE-2023-5197 (Linux Kernel). CVSS 7.8 → 6.6 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Linux	Kernel	—	5.9	—

Weaknesses

CWE-416

References (5)

http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html [Third Party Advisory]
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f15f29fd4779be8a418b66e9d52979bb6d6c2325 [Patch]
https://kernel.dance/f15f29fd4779be8a418b66e9d52979bb6d6c2325 [Patch, Vendor Advisory]
https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html [Mailing List, Third Party Advisory]

Authoritative record: CVE-2023-5197 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-2023-5197 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.