Within hw/ide/ahci.c, VARRAY refers to ports which is also loaded. So
we use the old version of ports to read the array but then allow any
value for ports.
An user able to alter the savevm data (either on the disk or over the wire
during migration) could use this flaw to to corrupt QEMU process memory on
the (destination) host, which could potentially result in arbitrary code
execution on the host with the privileges of the QEMU process.
This issue does not affect the versions of kvm package as shipped with
Red Hat Enterprise Linux 5.
This issue does not affect the versions of qemu-kvm package as shipped
with Red Hat Enterprise Linux 6
Created qemu tracking bugs for this issue:
Affects: fedora-all [bug 1095696]
qemu-1.6.2-5.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.