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Update 2024: On a Linux Mint 21.1 System adding the following to "Software Sources" deb [arch=amd64 signed-by=/usr/share/keyrings/oracle-virtualbox-2016.gpg] https://download.virtualbox.org/virtualbox/debian jammy contribThen doing the keyring dance and apt update it was possible to install a version of virtualbox newer than what is available from the Mint/Ubuntu repositories. At the time of this writing that is version 7.0.