Unknown severity · Source severity not reportedCVE-2025-37870

drm/amd/display: prevent hang on link training failCVE-2025-37870

Answer in brief

CVE-2025-37870 records a Unknown severity vulnerability in drm/amd/display: prevent hang on link training fail. 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 May 9, 2025Updated Oct 21, 2026Source checked Oct 21, 2026First seen by HOL Oct 21, 2026Material review Oct 21, 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	>=7462475e3a06fbb0b36243b391296f9f411e9041 <52cdc47cf6519e2912a34d29b7eeb3f10ca85efa \|\| >=7462475e3a06fbb0b36243b391296f9f411e9041 <0363c03672cd3191f037905bf981eb523a3b71b1 \|\| >=7462475e3a06fbb0b36243b391296f9f411e9041 <04bf4f2a497e9877c425c5124652e61fb8a1a0aa \|\| >=7462475e3a06fbb0b36243b391296f9f411e9041 <8058061ed9d6bc259d1e678607b07d259342c08f	52cdc47cf6519e2912a34d29b7eeb3f10ca85efa, 0363c03672cd3191f037905bf981eb523a3b71b1, 04bf4f2a497e9877c425c5124652e61fb8a1a0aa, 8058061ed9d6bc259d1e678607b07d259342c08f
Linux/Linuxgeneric	6.3	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 52cdc47cf6519e2912a34d29b7eeb3f10ca85efa if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
May 9, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 21, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: prevent hang on link training fail [Why] When link training fails, the phy clock will be disabled. However, in enable_streams, it is assumed that link training succeeded and the mux selects the phy clock, causing a hang when a register write is made. [How] When enable_stream is hit, check if link training failed. If it did, fall back to the ref clock to avoid a hang and keep the system in a recoverable state.

Quoted source text, attributed separately from HOL analysis.