bhyve(8) privileged guest escape via USB controller
Vulnerability Description
An insufficient boundary validation in the USB code could lead to an out-of-bounds write on the heap, with data controlled by the caller. A malicious, privileged software running in a guest VM can exploit the vulnerability to achieve code execution on the host in the bhyve userspace process, which typically runs as root. Note that bhyve runs in a Capsicum sandbox, so malicious code is constrained by the capabilities available to the bhyve process.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2024-32668
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Synacktiv
- The FreeBSD Foundation
- The Alpha-Omega Project
More from FreeBSD
View All →Affected Vendor
FreeBSD
View all reports →