CVE-2025-37870 (GCVE-0-2025-37870)
Vulnerability from cvelistv5 – Published: 2025-05-09 06:43 – Updated: 2026-10-21 12:36
VLAI
EPSS
VEX
Title
drm/amd/display: prevent hang on link training fail
Summary
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.
Severity
5.5 (Medium)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
7462475e3a06fbb0b36243b391296f9f411e9041 , < 52cdc47cf6519e2912a34d29b7eeb3f10ca85efa
(git)
Affected: 7462475e3a06fbb0b36243b391296f9f411e9041 , < 0363c03672cd3191f037905bf981eb523a3b71b1 (git) Affected: 7462475e3a06fbb0b36243b391296f9f411e9041 , < 04bf4f2a497e9877c425c5124652e61fb8a1a0aa (git) Affected: 7462475e3a06fbb0b36243b391296f9f411e9041 , < 8058061ed9d6bc259d1e678607b07d259342c08f (git) |
guessed | |
| Linux | Linux |
Affected:
6.3
Unaffected: 0 , < 6.3 (semver) Unaffected: 6.6.160 , ≤ 6.6.* (semver) Unaffected: 6.12.25 , ≤ 6.12.* (semver) Unaffected: 6.14.4 , ≤ 6.14.* (semver) Unaffected: 6.15 , ≤ * (original_commit_for_fix) |
guessed |
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"drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c"
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}
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"dateReserved": "2025-04-16T04:51:23.959Z",
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"date": "2026-10-29",
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"status": "final",
"title": "drm/amd/display: prevent hang on link training fail",
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"configurations": [
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},
{
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: impide el bloqueo en caso de fallo del entrenamiento del enlace [Por qu\u00e9] Cuando el entrenamiento del enlace falla, el reloj f\u00edsico se desactiva. Sin embargo, en enable_streams, se asume que el entrenamiento del enlace se realiz\u00f3 correctamente y el multiplexor selecciona el reloj f\u00edsico, lo que provoca un bloqueo al escribir en un registro. [C\u00f3mo] Cuando se alcanza enable_stream, se comprueba si el entrenamiento del enlace ha fallado. En caso afirmativo, se recurre al reloj de referencia para evitar un bloqueo y mantener el sistema en un estado recuperable."
}
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}
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| Author | Source | Type | Date | Other |
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Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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