CVEvulnerability

CVE-2021-29631

7.8 HIGH Published 2021-08-30 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-08-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-908

Description

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.

Affected configurations

• freebsd freebsd 11.4 • freebsd freebsd 12.2 • freebsd freebsd 13.0

Related

Weakness · CWE (1)

  • CWE-908 Use of Uninitialized Resource weakness

References