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-2023-3338

CVE-2023-3338MEDIUM

n/a kernel — Crash due to a null pointer dereference in the dn_nsp_send function

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  N  N  H    6.5   .0848   95.0     —

AFFECTED
  Product                     Versions     Fixed
  kernel                      unspecified  6.5-rc1
  Red Hat Enterprise Linux 6  unspecified  —
  Red Hat Enterprise Linux 7  unspecified  —
  Red Hat Enterprise Linux 7  unspecified  —
  Red Hat Enterprise Linux 8  unspecified  —
  Red Hat Enterprise Linux 8  unspecified  —
  Red Hat Enterprise Linux 9  unspecified  —
  Red Hat Enterprise Linux 9  unspecified  —
  Fedora                      unspecified  —

TIMELINE
  Jun 20  Reserved by redhat
  Jun 30  Published (CNA: redhat)
  Oct 14  EXPLOIT PUBLISHED — CVE-2023-3338 (kernel). Public exploit reference added.

CWE-476 · CNA: redhat · CVSS v3.1 · 8 references · NVD status: Modified

Description

A null pointer dereference flaw was found in the Linux kernel's DECnet networking protocol. This issue could allow a remote user to crash the system.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 20, 2023	Reserved	Reserved by redhat
June 30, 2023	Published	Published (CNA: redhat)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2023-3338 (kernel). Public exploit reference added.

Affected

Affected products and packages — 9 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	kernel	—	—	6.5-rc1
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 8	—	—	—
Red Hat	Red Hat Enterprise Linux 8	—	—	—
Red Hat	Red Hat Enterprise Linux 9	—	—	—
Red Hat	Red Hat Enterprise Linux 9	—	—	—
Fedora	Fedora	—	—	—

Weaknesses

CWE-476

References (8)

https://access.redhat.com/security/cve/CVE-2023-3338 [Third Party Advisory]
https://bugzilla.redhat.com/show_bug.cgi?id=2218618 [Issue Tracking]
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html [Mailing List, Third Party Advisory]
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html [Mailing List, Third Party Advisory]
https://seclists.org/oss-sec/2023/q2/276 [Exploit, Mailing List, Third Party Advisory]
https://security.netapp.com/advisory/ntap-20230824-0005/ [Third Party Advisory]
https://www.debian.org/security/2023/dsa-5480 [Third Party Advisory]

Authoritative record: CVE-2023-3338 at cve.org

Vendors: red hat · fedora

Weaknesses: CWE-476

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-3338 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.