Kernel panic - not syncing: Fatal exception

Hi,
hope someone can help me :-)

Did a fresh install of RHEL 8.0 GM on our ESXi.
Selinux disabled

After yum check-update / upgrade to RHEL 8.2 i get:
Security: kernel-core-4.18.0-193.1.2.el8_2.x86_64 is an installed security update
Security: kernel-core-4.18.0-80.el8.x86_64 is the currently running version

After a reboot i get the fatal exception (see attached file) error - booting the old Kernel - no problem.

• I tried yum remove kernel-4.18.0-193....
• yum install kernel-4.18.0-193.1.2.el8_2.x86_64
• yum reinstall kernel...
  ... no success....

Also tried my luck with rescue iso an grub repair suggestions on web - but this comes to nothing...

Other RHEL 8 installations with older kernel and same install procedure have no problems...
e.g. kernel 4.18.0-147.5.1.el8_1.x86_64

Suggestions welcome :-)
Best regards,
Helmut