rpmfusion provides now a fix of akmod-VirtualBox in the rpmfusion-free-updates-testing
repo. Run thus:
dnf -y --refresh --enablerepo=rpmfusion-free-updates-testing update akmod-VirtualBox
then wait for akmods to build the kernel modules.
It compiles for the 6.19.6-200.fc43.x86_64 kernel. I haven’t tested VirtualBox.
I haven’t tested also with the 6.19.7-200.fc43.x86_64 kernel