CVE-2025-21985

kernel: drm/amd/display: Fix out-of-bound accesses

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · April 1, 2025

Updated · October 20, 2026

Description

A flaw was found in the Linux kernel AMD display driver. hpo_stream_to_link_encoder_mapping has four entries, but a stream location can be larger than that and is used as an array index. A local user of an AMD GPU can cause an out-of-bounds access.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-787 · Out-of-bounds Write