CVE-2020-2732
Kernel: kvm: nVMX: L2 guest may trick the L0 hypervisor to access sensitive L1 resources
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · February 25, 2020
Updated · June 28, 2026
Description
A flaw was found in the way KVM hypervisor handled instruction emulation for the L2 guest when nested(=1) virtualization is enabled. In the instruction emulation, the L2 guest could trick the L0 hypervisor into accessing sensitive bits of the L1 hypervisor. An L2 guest could use this flaw to potentially access information of the L1 hypervisor.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.8CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor