In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Prevent crash when disable stream [Why] Disabling stream encoder invokes a function that no longer exists. [How] Check if the function declaration is NULL in disable stream encoder.
https://git.kernel.org/stable/c/72d72e8fddbcd6c98e1b02d32cf6f2b04e10bd1c
https://git.kernel.org/stable/c/59772327d439874095516673b4b30c48bd83ca38
https://git.kernel.org/stable/c/4356a2c3f296503c8b420ae8adece053960a9f06
https://git.kernel.org/stable/c/2b17133a0a2e0e111803124dad09e803718d4a48