CVE-2021-32844

Description

HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, ` vi_pci_write` has is a call to `vc_cfgwrite` 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 451558fe8aaa8b24e02e34106e3bb9fe41d7ad13.

Category

6.2
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Third-Party Advisory github.com
Affected: moby hyperkit
Published at:
Updated at:

References

Link Tags
https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/ third party advisory
https://github.com/moby/hyperkit/pull/313 patch
https://github.com/moby/hyperkit/commit/451558fe8aaa8b24e02e34106e3bb9fe41d7ad13 patch

Frequently Asked Questions

What is the severity of CVE-2021-32844?
CVE-2021-32844 has been scored as a medium severity vulnerability.
How to fix CVE-2021-32844?
To fix CVE-2021-32844, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-32844 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-32844 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-32844?
CVE-2021-32844 affects moby hyperkit.
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