drm/amd/display: Increase block_sequence array size (CVE-2025-38080) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2025-38080

drm/amd/display: Increase block_sequence array size

Answer in brief

CVE-2025-38080 records a Unknown severity vulnerability in drm/amd/display: Increase block_sequence array size. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 18, 2025Updated Aug 5, 2026Source checked Sep 21, 2026First seen by HOL Aug 5, 2026Material review Aug 5, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <de67e80ab48f1f23663831007a2fa3c1471a7757 \|\| >=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <e55c5704b12eeea27e212bfab8f7e51ad3e8ac1f \|\| >=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <bf1666072e7482317cf2302621766482a21a62c7 \|\| >=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <3a7810c212bcf2f722671dadf4b23ff70a7d23ee	de67e80ab48f1f23663831007a2fa3c1471a7757, e55c5704b12eeea27e212bfab8f7e51ad3e8ac1f, bf1666072e7482317cf2302621766482a21a62c7, 3a7810c212bcf2f722671dadf4b23ff70a7d23ee
Linux/Linuxgeneric	4.15	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to de67e80ab48f1f23663831007a2fa3c1471a7757 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jun 18, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Increase block_sequence array size [Why] It's possible to generate more than 50 steps in hwss_build_fast_sequence, for example with a 6-pipe asic where all pipes are in one MPC chain. This overflows the block_sequence buffer and corrupts block_sequence_steps, causing a crash. [How] Expand block_sequence to 100 items. A naive upper bound on the possible number of steps for a 6-pipe asic, ignoring the potential for steps to be mutually exclusive, is 91 with current code, therefore 100 is sufficient.

Quoted source text, attributed separately from HOL analysis.