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-2023-52480HIGH
Linux Linux — ksmbd: fix race condition between session lookup and expire
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   L   N  U  H  H  H    7.0   .0049   39.9     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    a6a9601ba995d0fec635324cb9fd8d14f9bea14e –  —
  Linux    6.4 –                                       6.1.57
TIMELINE
  Feb 20  Reserved by Linux
  Feb 29  Published (CNA: Linux)
  Aug 15  RESCORED — CVE-2023-52480 (Linux). CVSS 9.8 → 7 (NVD).
CWE-362 · CNA: Linux · CVSS v3.1 · 4 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix race condition between session lookup and expire Thread A + Thread B ksmbd_session_lookup | smb2_sess_setup sess = xa_load | | | xa_erase(&conn->sessions, sess->id); | | ksmbd_session_destroy(sess) --> kfree(sess) | // UAF! | sess->last_active = jiffies | + This patch add rwsem to fix race condition between ksmbd_session_lookup and ksmbd_expire_session.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
February 20, 2024ReservedReserved by Linux
February 29, 2024PublishedPublished (CNA: Linux)
August 15, 2026RESCOREDRESCORED — CVE-2023-52480 (Linux). CVSS 9.8 → 7 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinuxa6a9601ba995d0fec635324cb9fd8d14f9bea14e
LinuxLinux6.46.1.57

Weaknesses

CWE-362

References (4)

Related

Authoritative record: CVE-2023-52480 at cve.org

Vendors: linux

Weaknesses: CWE-362

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-52480 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.