Is it possible to upgrade from centos 6 kernel 2.6.32-754.25.1.el6.x86_64 to 5.12.1 version?
Solution 1:
I don't think this is possible. There has been major updates in the kernel, and older libc versions do not work properly with this kernel.
CentOS6 has stopped receiving maintenance updates on November 30th 2020, so the only responsible action is to update the complete system.