This is a maintenance release. The following items were fixed and/or added:
- VMM: more fixes for MSR emulation on certain hardware (bugs #12784, #12949, #13034) - VMM: improve MSI handling under rare circumstances (only relevant for the ICH9 chipset) - VMM: fixed #UD exception for 64-bit guests with the EFER.SCE bit and the SYSCALL instruction (VT-x only; 4.3 regression; bug #13008) - VMM: fixed timekeeping after resuming SMP guests - VMM: properly wake up a halted VCPU on NMI/SMI - GUI: fixed a potential crash - GUI: fixed stuck AltGr key on Windows hosts (bug #2537) - GUI: fixed a potential error during the version check - GUI: shortcut change should not require Enter/Return (or other trigger) to confirm (bugs #12828, #12847, #12937, #13087) - GUI: fixed update check which was broken due to changing the location of the root certificates (bug #13096) - VBoxManage: fixed typo in showvminfo --machinereadable (bug #13176) - NAT: fixed inbound half-close (bug #13116) - NAT: fixed slow upload speed under certain conditions (bug #10034) - NAT Network: fixed potential loss of inbound TCP data - NAT Network: fixed potential infinite stalls of TCP connections over IPv6 - NAT Network: fixed resets of TCP connections on Windows hosts - NAT Network: fixed inbound half-close on Mac OS X hosts - NAT Network: fixed socket leak on Solaris hosts - NAT Network: fixed ping of mapped host loopback on Mac OS X and Solaris hosts, fixed proxying of IMCP errors on Mac OS X - Host-Only Network: fixed SNMP ifConnectorPresent value on Windows (bug #13143) - Storage: fixed a possible crash with CD/DVD passthrough under certain circumstances - Storage: fixed a crash when trying to open an inaccessible QED or QCOW image (bug #12613) - Storage: fixed data corruption or read errors under rare circumstances - AHCI: fixed a crash under rare circumstances - USB: performance fixes - ICH9: properly reset MSI capability on reset - Keyboard: active modifier keys during suspend were stuck after resuming the host - 3D: fixed misbehavior with huge guests (i.e. guest more than 4GB guest memory - 3D: several fixes - API: properly detect the Windows 8.1 guest OS type (bug #13090) - ExtPack: cleanup of dangling uninstallation directories - Linux hosts / guests: compile fix for EL7 (bug #12638) - Linux Additions: made 3D pass-through work with recent versions of Mesa in the guest (bug #12941) - Linux Additions: Linux 3.16 fixes (bug #13123) - Mac OS X hosts: when scanning for host CD/DVD devices also consider BlueRay devices - OS/2 Additions: fixed gengradd.dll library name (bug #12785) - Solaris Additions: fixed permissions of files and directories located on shared folders - Windows host installer: fixed the need for rebooting Windows after installation or upgrade, extended logging for NetFlt/NetAdp (un)installation