This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2021-3735 →

DEBIAN-CVE-2021-3735

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 Regi...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 qemu

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 qemu

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 qemu

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org