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.

Related CVEs

CVE-2021-29631

Key Information

GHSA ID

GHSA-7hc7-vjj6-4p36

Published

May 24, 2022 7:12 PM

Last Modified

May 24, 2022 7:12 PM

CVSS Score

7.5 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: July 30, 2025 6:36 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.