Comment 6 for bug 1540969

There is no "thinks". It is very rare, but it has happened and we have the bug reports in Ubuntu Debian to prove it. Chances are it will happen again someday.

So, some added delay before migrating microcode updates to older LTS branches is advised. If any regressions are reported during that added delay, a case-by-case decision is required on how to best handle it (it is possible to lock down a specific microcode to an older version, for example).

Unfortunately, you cannot just "ditch" operating-system-provided microcode updates and "hope for the best" in the general case.