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-2025-21985HIGH
Linux Linux — drm/amd/display: Fix out-of-bound accesses
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  N  H    7.1   .0019    8.7     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c –  —
  Linux    4.15 –                                      6.12.20
TIMELINE
  Dec 29  Reserved by Linux
  Apr 1   Published (CNA: Linux)
  Jul 30  RESCORED — CVE-2025-21985 (Linux). CVSS 7.8 → 7.1 (NVD).
CWE-125 · CNA: Linux · CVSS v3.1 · 3 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix out-of-bound accesses [WHAT & HOW] hpo_stream_to_link_encoder_mapping has size MAX_HPO_DP2_ENCODERS(=4), but location can have size up to 6. As a result, it is necessary to check location against MAX_HPO_DP2_ENCODERS. Similiarly, disp_cfg_stream_location can be used as an array index which should be 0..5, so the ASSERT's conditions should be less without equal.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
December 29, 2024ReservedReserved by Linux
April 1, 2025PublishedPublished (CNA: Linux)
July 30, 2026RESCOREDRESCORED — CVE-2025-21985 (Linux). CVSS 7.8 → 7.1 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinux4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c
LinuxLinux4.156.12.20

Weaknesses

CWE-125

References (3)

Related

Authoritative record: CVE-2025-21985 at cve.org

Vendors: linux

Weaknesses: CWE-125

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-21985 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.