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
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.

Bugs

• <https://bugzilla.redhat.com/show_bug.cgi?id=1997184&gt;

Notes