CVE-2021-32843

Summary

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 Software

Weaknesses

• CWE-476: CWE-476 NULL Pointer Dereference

ADP Enrichment

CVE Program Container

Additional 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

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

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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