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.
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).
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
| Date | Event | Detail |
| December 29, 2024 | Reserved | Reserved by Linux |
| April 1, 2025 | Published | Published (CNA: Linux) |
| July 30, 2026 | RESCORED | RESCORED — CVE-2025-21985 (Linux). CVSS 7.8 → 7.1 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c | — |
| Linux | Linux | — | 4.15 | 6.12.20 |
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.