For those who would rather not want to install a testbuild or wait for the official build, the solution given by w3bservice works. It boils down to:
(1) vi /usr/share/virtualbox/src/vboxhost/vboxdrv/r0drv/linux/timer-r0drv-linux.c
(2) On line 751, replace RTLNX_VER_MIN(6,16,0) with (5.14.0)