qemu-kvm-0.12.1.2-2.491.AXS4.6

KVM (for Kernel-based Virtual Machine) is a full virtualization solution
for Linux on x86 hardware.

Using KVM, one can run multiple virtual machines running unmodified Linux
or Windows images. Each virtual machine has private virtualized hardware:
a network card, disk, graphics adapter, etc.

Security issues fixed with this release:

CVE-2016-2857
The net_checksum_calculate function in net/checksum.c in QEMU allows
local guest OS users to cause a denial of service (out-of-bounds heap
read and crash) via the payload length in a crafted packet.
CVE-2017-2615
** RESERVED **
This candidate has been reserved by an organization or individual that
will use it when announcing a new security problem. When the
candidate has been publicized, the details for this candidate will be
provided.

Fixed bugs:

* Previously, rebooting a guest virtual machine more than 128 times in a short period of time caused the guest to shut down instead of rebooting, because the virtqueue was not cleaned properly. This update ensures that the virtqueue is cleaned more reliably, which prevents the described problem from occurring.