title: bhyveload(8) host file access
description: `bhyveload -h <host-path>` may be used to grant loader access to the <host-path> directory tree on the host.  Affected versions of bhyveload(8) do not make any attempt to restrict loader's access to <host-path>, allowing the loader to read any file the host user has access to. In the bhyveload(8) model, the host supplies a userboot.so to boot with, but the loader scripts generally come from the guest image.  A maliciously crafted script could be used to exfiltrate sensitive data from the host accessible to the user running bhyhveload(8), which is often the system root.
affected:
{
defaultStatus: unknown
modules: bhyveload
product: FreeBSD
vendor: FreeBSD
versions:
lessThan: p5, status: affected, version: 14.0-RELEASE, versionType: release
lessThan: p10, status: affected, version: 13.2-RELEASE, versionType: release
}