CVE-2025-37870

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.