Oracle has released VirtualBox 5.2 Maintenance Release 12.
Oracle VM VirtualBox 5.2.12 release includes improvements and regression fixes for Oracle VM VirtualBox 5.2.
Between them we can mention:
Serial: fixed possible data corruption when sending data under certain circumstances
Video recording: fixed starting / stopping recording under certain circumstances
Linux hosts: support Linux 4.17 changes
Linux guests: support Linux 4.16 and EL 7.5 kernels and 3D fixes
The Oracle VirtualBox Team