The
5.16.6,
5.15.20,
5.10.97, and
5.4.177
stable kernel updates have been released. Unfortunately, a
problem was reported almost immediately after that release, leading to
the reversion of a broken patch and the subsequent release of
5.16.7,
5.15.21, and
5.10.98.
It’s worth noting that numerous groups tested the first set of releases and
reported successful results (they can be seen as replies to the
-rc1 posting), but nobody hit this problem in time.

Source: LWN.net – Stable kernels galore