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Unrated severityNVD Advisory· Published May 9, 2025· Updated Sep 3, 2025

drm/amd/display: prevent hang on link training fail

CVE-2025-37870

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.

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Affected products

81

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Vulnerability mechanics

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