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-2023-42754

CVE-2023-42754MEDIUM

Red Hat Red Hat Enterprise Linux 8 — Kernel: ipv4: null pointer dereference in ipv4_send_dest_unreach()

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0043   35.3     —

AFFECTED
  Product                     Versions     Fixed
  Red Hat Enterprise Linux 8  unspecified  0:4.18.0-553.rt7.342.el8_10
  Red Hat Enterprise Linux 8  unspecified  0:4.18.0-553.el8_10
  Red Hat Enterprise Linux 9  unspecified  0:5.14.0-427.13.1.el9_4
  Red Hat Enterprise Linux 9  unspecified  0:5.14.0-427.13.1.el9_4
  Red Hat Enterprise Linux 6  unspecified  —
  Red Hat Enterprise Linux 7  unspecified  —
  Red Hat Enterprise Linux 7  unspecified  —
  Red Hat Enterprise Linux 9  unspecified  —

TIMELINE
  Sep 13  Reserved by redhat
  Oct 5   Published (CNA: redhat)
  Oct 15  EXPLOIT PUBLISHED — CVE-2023-42754 (Red Hat Enterprise Linux 8). Public exploit reference added.

CWE-476 · CNA: redhat · CVSS v3.1 · 13 references · NVD status: Modified

Description

A NULL pointer dereference flaw was found in the Linux kernel ipv4 stack. The socket buffer (skb) was assumed to be associated with a device before calling __ip_options_compile, which is not always the case if the skb is re-routed by ipvs. This issue may allow a local user with CAP_NET_ADMIN privileges to crash the system.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 13, 2023	Reserved	Reserved by redhat
October 5, 2023	Published	Published (CNA: redhat)
October 15, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2023-42754 (Red Hat Enterprise Linux 8). Public exploit reference added.

Affected

Affected products and packages — 8 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Red Hat	Red Hat Enterprise Linux 8	—	—	0:4.18.0-553.rt7.342.el8_10
Red Hat	Red Hat Enterprise Linux 8	—	—	0:4.18.0-553.el8_10
Red Hat	Red Hat Enterprise Linux 9	—	—	0:5.14.0-427.13.1.el9_4
Red Hat	Red Hat Enterprise Linux 9	—	—	0:5.14.0-427.13.1.el9_4
Red Hat	Red Hat Enterprise Linux 6	—	—	—
Red Hat	Red Hat Enterprise Linux 7	—	—	—
Red Hat	Red Hat Enterprise Linux 7	—	—	—
Red Hat	Red Hat Enterprise Linux 9	—	—	—

Weaknesses

CWE-476

References (13)

Authoritative record: CVE-2023-42754 at cve.org

Vendors: red hat

Weaknesses: CWE-476

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-42754 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.