CVE-2020-24718

HighCVSS 8.2/10Last modified Jun 17, 2026

Description

bhyve, as used in FreeBSD through 12.1 and illumos (e.g., OmniOS CE through r151034 and OpenIndiana through Hipster 2020.04), does not properly restrict VMCS and VMCB read/write operations, as demonstrated by a root user in a container on an Intel system, who can gain privileges by modifying VMCS_HOST_RIP.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-862

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/illumos/illumos-gate/blob/84971882a96ac0fecd538b02208054a872ff8af3/usr/src/uts/i86pc/io/vmm/intel/vmcs.c#L246-L249Exploit, Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:28.bhyve_vmcs.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20201016-0002/Third Party Advisory
https://github.com/illumos/illumos-gate/blob/84971882a96ac0fecd538b02208054a872ff8af3/usr/src/uts/i86pc/io/vmm/intel/vmcs.c#L246-L249Exploit, Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:28.bhyve_vmcs.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20201016-0002/Third Party Advisory

Timeline

Published: Sep 25, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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