CVE-2021-32843

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.

• CWE-476
• CWE-476

• https://github.com/moby/hyperkit/commit/df0e46c7dbfd81a957d85e449ba41b52f6f7beb4Patch
• https://github.com/moby/hyperkit/pull/313Patch
• https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/Third Party Advisory
• https://github.com/moby/hyperkit/commit/df0e46c7dbfd81a957d85e449ba41b52f6f7beb4Patch
• https://github.com/moby/hyperkit/pull/313Patch
• https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/Third Party Advisory

Published

Feb 17, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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