Linux Guest Additions: Fixed issue when kernel modules were rebuilt on each boot when guest system has no X11 installed.
Windows Host and Guest: Introduced ECDSA support (bug #21621).
MacOS Host and Guest: Introduced general improvements in the installer area.
Linux Host and Guest: Improved condition check when kernel modules need to be signed.
Solaris Host: Introduced general improvements in the installer area.
Linux Host: Added initial support for kernel 6.5 (NOTE: Guest Additions do not support kernel 6.5 yet).
Linux Host: Added initial support for Indirect Branch Tracking (bug #21435).
NAT: Adjusted UDP proxy timeout from 18-21 to 21-24 range to respect intended 20 second timeout (bug #21560).
Audio: Also use the PulseAudio backend when pipewire-pulse is running instead of falling back to ALSA (bug #21575).
This will effectively restore the behavior of former VirtualBox versions
Guest Control/VBoxManage: Fixed behavior of how handling argument 0 for a started guest process works: One can now explicitly specify it with the newly added option "-arg0".
3D: Fixed various graphics issues with Windows 11 guests (bugs #21136, #21515).
TPM: Fixed a crash when a VM has a TPM version 1.2 configured (bug #21622).
VMM: Fixed a bug while walking page tables while executing nested VMs causing flooding of the release log as a consequence (Intel hosts only, bug #21551).