This update for VirtualBox provides version 5.1.18 and fixes the following issues:

- API: Fixed snapshot handling of medium attachments and PCI device attachments.
- API: Make 32-bit Windows guests in raw mode boot again if the ICH9 chipset is used.
CPUID/HTT bit set.
- GUI: Better error handling on the global settings / network / host-only / DHCP server settings.
- GUI: Fixes for full-screen with multiple screens.
- GUI: Hide the mini-toolbar from the taskbar and the pager on certain X11 hosts.
- ICH9: Fixed incorrect initialization of the primary bus for PCI bridges.
- Linux Additions: Added vboxsf FS modules alias.
- Linux Additions: Fix for the shared folders kernel module to compile on Linux 4.10.
- Linux Additions: Properly install the Linux kernel module override rule on distributions without /etc/depmod.d.
- Linux hosts: Added an action for opening the VM manager window to the .desktop file.
- Linux hosts: Fixed autostart service script.
- Linux hosts / guests: Linux 4.11 compile fixes.
- Linux Installers: Do not rebuild kernel modules unnecessarily.
- NAT network: Fixed two potential crashes in the DHCP server.
- OVF: Fixes for exporting and importing appliances with many disks.
- OVF: When importing an appliance handle more than 10 network adapters if the OVA was created by VirtualBox.
- Shared Folders: Fixed access to long pathes. (Windows guests only)
- Shared Folders: Fixed case insensitive filename access. (Windows guests only)
- USB: Fixed not being able to attach certain USB devices having invalid characters in the device strings.
- USB: Several fixes for the USB/IP support.
- VBoxBugReport: Fixed VM log collection issue.
- VBoxManage: Fixed regression with modifyhd --resize.
- VBoxSVC: Fixed another crash during shutdown under rare circumstances.
- VMM: Another fix for handling certain MSRs on ancient CPUs without VT-x support for MSR bitmaps.
- VMM: Don't access the MSR_IA32_SMM_MONITOR_CTL MSR if dual-monitor treatment is not available.
- VMM: Fixed a bug in call gate emulation.
- VMM: Fixed a sporadic guest hang under certain conditions.
- VMM: Fixed VERR_SSM_LOAD_CPUID_MISMATCH errors when restoring a saved state with SMP guests on hosts without the
- VMM: FWAIT instruction fix.
- Windows Additions: Fixed a crash with recent Windows 10 builds if 3D is disabled.
- Windows Additions: Fixed automatic logins for Windows Vista and newer.