bhyve

bhyve is FreeBSD's type-2 hypervisor, using hardware virtualization with device models emulated in a userspace bhyve process. The guest-to-host escape targets those device models, virtio, AHCI, e1000, and the USB and framebuffer devices, with a flaw landing in the bhyve process on the host, alongside theft of the guest disk images.

1 ਮਿੰਟ ਦੀ ਪੜ੍ਹਤ7 ਅਕਤੂ 2026 ਨੂੰ ਅੱਪਡੇਟ ਕੀਤਾflorianamette1 ਯੋਗਦਾਨੀ
ਆਪਣੇ ਅਸਿਸਟੈਂਟ ਨੂੰ ਪੁੱਛੋ (MCP)GitHub 'ਤੇ ਐਡਿਟ ਕਰੋ

bhyve is FreeBSD's native hypervisor. The vmm.ko kernel module provides CPU and memory virtualization using VT-x or AMD-V, while a per-VM userspace bhyve process emulates the devices. The design is lean and modern, with a focus on virtio and a small set of emulated devices (AHCI storage, the e1000 NIC, USB, a framebuffer, and PCI passthrough). A guest-to-host escape therefore targets the device models in the bhyve process, landing on the FreeBSD host, and the usual disk-image theft applies to the guest's backing storage.

bash
# on a FreeBSD bhyve host
kldstat | grep vmm; ls /dev/vmm/
ps aux | grep bhyve | grep -v grep

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ਪਿਛਲਾKnown escape exploitsਅਗਲਾ Host access and shell