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

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No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

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.

Source published

9 May 2025 06:43:59 UTC

Source modified

21 Oct 2026 12:36:33 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

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