boxscore/security
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-2023-4515MEDIUM
Linux Linux — ksmbd: validate command request size
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0029   21.9     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    35f450f54dca1519bb24faacd0428db09f89a11f –  —
  Linux    6.4 –                                       5.15.127
TIMELINE
  Aug 24  Reserved by Linux
  Aug 16  Published (CNA: Linux)
  Aug 4   RESCORED — CVE-2023-4515 (Linux). CVSS 9.1 → 5.5 (NVD).
CNA: Linux · CVSS v3.1 · 4 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate command request size In commit 2b9b8f3b68ed ("ksmbd: validate command payload size"), except for SMB2_OPLOCK_BREAK_HE command, the request size of other commands is not checked, it's not expected. Fix it by add check for request size of other commands.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
August 24, 2023ReservedReserved by Linux
August 16, 2025PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2023-4515 (Linux). CVSS 9.1 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinux35f450f54dca1519bb24faacd0428db09f89a11f
LinuxLinux6.45.15.127

References (4)

Related

Authoritative record: CVE-2023-4515 at cve.org

Vendors: linux

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-4515 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.