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-2025-22039HIGH
Linux Linux — ksmbd: fix overflow in dacloffset bounds check
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  N  H    7.1   .0066   49.0     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    0626e6641f6b467447c81dd7678a69c66f7746cf –  —
  Linux    5.15 –                                      6.12.23
TIMELINE
  Dec 29  Reserved by Linux
  Apr 16  Published (CNA: Linux)
  Jul 30  RESCORED — CVE-2025-22039 (Linux). CVSS 8.8 → 7.1 (NVD).
CWE-125, CWE-190 · CNA: Linux · CVSS v3.1 · 4 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smb_check_perm_dacl() and smb_inherit_dacl(). This could result in out-of-bounds memory access and a kernel crash when dereferencing the DACL pointer. This patch converts dacloffset to unsigned int and uses check_add_overflow() to validate access to the DACL.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
December 29, 2024ReservedReserved by Linux
April 16, 2025PublishedPublished (CNA: Linux)
July 30, 2026RESCOREDRESCORED — CVE-2025-22039 (Linux). CVSS 8.8 → 7.1 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinux0626e6641f6b467447c81dd7678a69c66f7746cf
LinuxLinux5.156.12.23

Weaknesses

CWE-125 · CWE-190

References (4)

Related

Authoritative record: CVE-2025-22039 at cve.org

Vendors: linux

Weaknesses: CWE-125 · CWE-190

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-22039 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.