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CVE-2021-29631 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:13.bhyve.asc CVEVendor Advisory
https://security.netapp.com/advisory/ntap-20210923-0004/ CVEThird Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:13.bhyve.asc [email protected]Vendor Advisory
https://security.netapp.com/advisory/ntap-20210923-0004/ [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-908Use of Uninitialized Resource[email protected]

Affected Products

ProductVersions
freebsd freebsd
11.4 -
11.4 p1
11.4 p10
11.4 p11
11.4 p12

CPE

  • cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p10:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p11:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p12:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p13:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p4:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p5:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p6:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p7:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p8:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:11.4:p9:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p10:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p3:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p4:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p5:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p6:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p7:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p8:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:12.2:p9:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:13.0:-:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:13.0:p1:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:13.0:p2:*:*:*:*:*:*
  • cpe:2.3:o:freebsd:freebsd:13.0:p3:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-29631
NVD Published Date:
Aug 30, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]