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-2025-21844MEDIUM
Linux Linux — smb: client: Add check for next_buffer in receive_encrypted_standard()
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0060   45.9     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    b03c8099a738a04d2343547ae6a04e5f0f63d3fa –  —
  Linux    6.7 –                                       5.10.235
TIMELINE
  Dec 29  Reserved by Linux
  Mar 12  Published (CNA: Linux)
  Jul 30  RESCORED — CVE-2025-21844 (Linux). CVSS 7.5 → 5.5 (NVD).
CWE-476 · CNA: Linux · CVSS v3.1 · 10 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: Add check for next_buffer in receive_encrypted_standard() Add check for the return value of cifs_buf_get() and cifs_small_buf_get() in receive_encrypted_standard() to prevent null pointer dereference.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
December 29, 2024ReservedReserved by Linux
March 12, 2025PublishedPublished (CNA: Linux)
July 30, 2026RESCOREDRESCORED — CVE-2025-21844 (Linux). CVSS 7.5 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinuxb03c8099a738a04d2343547ae6a04e5f0f63d3fa
LinuxLinux6.75.10.235

Weaknesses

CWE-476

References (10)

Related

Authoritative record: CVE-2025-21844 at cve.org

Vendors: linux

Weaknesses: CWE-476

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-21844 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.