CVE-2021-32843: Mobyproject Hyperkit

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, `virtio.c` has is a call to `vc_cfgread` that does not check for null which when called makes the host crash. This issue may lead to a guest crashing the host causing a denial of service. This issue is fixed in commit df0e46c7dbfd81a957d85e449ba41b52f6f7beb4.

Affected products

• Mobyproject Hyperkit: up to and including 0.20210107

Published 2023-02-17. Last modified 2026-06-17.