CVE-2025-37870

System hang via disabled PHY clock selection

Published May 9, 2025 · Updated May 11, 2026

Denial of service in the Linux AMD Display Core allows local users to hang systems after a display link-training failure. The enable_streams path assumes training succeeded, selects a disabled PHY clock, and then performs a register write that stalls the system. Exploitation requires low-privileged local access and an affected AMD display path where link training fails; the documented consequence is a system hang.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux AMD Display Core allows local users to hang systems after a display link-training failure. The enable_streams path assumes training succeeded, selects a disabled PHY clock, and then performs a register write that stalls the system. Exploitation requires low-privileged local access and an affected AMD display path where link training fails; the documented consequence is a system hang.

The record

CVE
CVE-2025-37870
Published
May 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.3
  2. Affected versionversion=7462475e3a06fbb0b36243b391296f9f411e9041 <0363c03672cd3191f037905bf981eb523a3b71b1
  3. Affected versionversion=7462475e3a06fbb0b36243b391296f9f411e9041 <04bf4f2a497e9877c425c5124652e61fb8a1a0aa
  4. Affected versionversion=7462475e3a06fbb0b36243b391296f9f411e9041 <8058061ed9d6bc259d1e678607b07d259342c08f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=7462475e3a06fbb0b36243b391296f9f411e9041 <0363c03672cd3191f037905bf981eb523a3b71b1; version=7462475e3a06fbb0b36243b391296f9f411e9041 <04bf4f2a497e9877c425c5124652e61fb8a1a0aa; version=7462475e3a06fbb0b36243b391296f9f411e9041 <8058061ed9d6bc259d1e678607b07d259342c08f

Published CVSS scores

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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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