Vulnerability Details CVE-2021-29631
In FreeBSD 13.0-STABLE before n246941-20f96f215562, 12.2-STABLE before r370400, 11.4-STABLE before r370399, 13.0-RELEASE before p4, 12.2-RELEASE before p10, and 11.4-RELEASE before p13, certain VirtIO-based device models in bhyve failed to handle errors when fetching I/O descriptors. A malicious guest may cause the device model to operate on uninitialized I/O vectors leading to memory corruption, crashing of the bhyve process, and possibly arbitrary code execution in the bhyve process.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.9%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 7.2
References