cvedb.io
CVE-2021-3735
MEDIUM · CVSS 4.4
EPSS exploitation probability: 0%
Published 2022-08-26T16:15:09.467 · Last modified 2026-06-17T04:05:39.797

Summary

A deadlock issue was found in the AHCI controller device of QEMU. It occurs on a software reset (ahci_reset_port) while handling a host-to-device Register FIS (Frame Information Structure) packet from the guest. A privileged user inside the guest could use this flaw to hang the QEMU process on the host, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.

Affected products

qemu — qemu

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.