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-2025-39718MEDIUM
Linux Linux — vsock/virtio: Validate length in packet header before skb_put()
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0016    5.4     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    baddcc2c71572968cdaeee1c4ab3dc0ad90fa765 –  —
  Linux    6.3 –                                       6.1.149
TIMELINE
  Apr 16  Reserved by Linux
  Sep 5   Published (CNA: Linux)
  Jul 30  RESCORED — CVE-2025-39718 (Linux). CVSS 8.4 → 5.5 (NVD).
CWE-787 · CNA: Linux · CVSS v3.1 · 7 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: Validate length in packet header before skb_put() When receiving a vsock packet in the guest, only the virtqueue buffer size is validated prior to virtio_vsock_skb_rx_put(). Unfortunately, virtio_vsock_skb_rx_put() uses the length from the packet header as the length argument to skb_put(), potentially resulting in SKB overflow if the host has gone wonky. Validate the length as advertised by the packet header before calling virtio_vsock_skb_rx_put().

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
April 16, 2025ReservedReserved by Linux
September 5, 2025PublishedPublished (CNA: Linux)
July 30, 2026RESCOREDRESCORED — CVE-2025-39718 (Linux). CVSS 8.4 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinuxbaddcc2c71572968cdaeee1c4ab3dc0ad90fa765
LinuxLinux6.36.1.149

Weaknesses

CWE-787

References (7)

Related

Authoritative record: CVE-2025-39718 at cve.org

Vendors: linux

Weaknesses: CWE-787

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-39718 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.