VirtualBox 6.1.20 Released – Multiple Bug Fixes

Oracle VirtualBox
Oracle VirtualBox

Oracle has released VirtualBox 6.1.20

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2. See “About VirtualBox” for an introduction.

Presently, VirtualBox runs on Windows, Linux, Macintosh, and Solaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7, Windows 8, Windows 10), DOS/Windows 3.x, Linux (2.4, 2.6, 3.x and 4.x), Solaris and OpenSolaris, OS/2, and OpenBSD.

VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while Oracle ensures the product always meets professional quality criteria.

The following Change logs items were fixed and/or added:

  • VMM: Fixed extremely poor VM performance depending on the timing of various actions
  • VMM: Fixed guest OS hanging under certain circumstances when Hyper-V is present
  • VMM: Fixed Guru Meditation error when using a nested hypervisor under certain circumstances
  • VMM: Fixed a SMAP related host panic affecting Solaris 11.4 systems with Intel Haswell CPUs or later
  • OCI: Add cloud-init support for export to OCI and for OCI instance creation
  • GUI: Fixed “Delete all files” leaving behind Logs/VBoxUI.log
  • Audio: Multiple fixes and enhancements
  • Audio: Fixed detection of duplex audio devices on macOS (5.0 regression;)
  • Network: Fixed link status reporting for “not attached” adapters
  • Network: Fixed connectivity issues with e1000 in OS/2 guests (6.1.18 regression;)
  • Network: Fixed VxWorks e1000 driver compatibility issue
  • Network: Fixed GUI checks for port forwarding rules rejecting IPv6 with “Nat Network”
  • DHCP: Don’t crash in the presence of fixed address assignments
  • Serial: Fixed possible VM hang when using the a serial port in disconnected mode
  • Webcam: Fixed interoperability with v4l2loopback and fixed a crash under certain circumstances
  • NVMe: Fixed sporadic Windows VM hang or reboot on high CPU load
  • VBoxManage: Allow changing network adapter attachment of a saved VM with “modifyvm”
  • vboximg-mount: Fix for argument processing to honor the ‘–root’ option (6.0 regression;)
  • Linux host and guest: Support kernel versions 5.11 and 5.12
  • Linux host: Maximum MTU size increased to 16110 for host-only adapters on Linux kernels 4.10+
  • Linux Guest Additions: Fix vboxvideo module compilation for kernel version 5.10.x
  • Linux Guest Additions: Fixed kernel module build for RHEL 8.4 beta and CentOS Stream

Download Oracle Virtualbox 6.1.20

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