CVE-2021-32843

State: Published
Severity: 6.2 Medium
Published: Feb 17, 2023
Updated: Mar 10, 2025
Reserved: May 12, 2021

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.2 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
hyperkitmoby	0.20210107 through 0.20210107Affected

References

https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/
https://github.com/moby/hyperkit/pull/313
https://github.com/moby/hyperkit/commit/df0e46c7dbfd81a957d85e449ba41b52f6f7beb4

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