Security update for qemu

This update for qemu to version 2.6.2 fixes the several issues.

These security issues were fixed:
- CVE-2016-7161: Heap-based buffer overflow in the .receive callback of xlnx.xps-ethernetlite in QEMU (aka Quick Emulator) allowed attackers to execute arbitrary code on the QEMU host via a large ethlite packet (bsc#1001151).
- CVE-2016-7170: OOB stack memory access when processing svga command (bsc#998516).
- CVE-2016-7466: xhci memory leakage during device unplug (bsc#1000345).
- CVE-2016-7422: NULL pointer dereference in virtqueu_map_desc (bsc#1000346).
- CVE-2016-7908: The mcf_fec_do_tx function in hw/net/mcf_fec.c did not properly limit the buffer descriptor count when transmitting packets, which allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags (bsc#1002550).
- CVE-2016-7995: Memory leak in ehci_process_itd (bsc#1003612).
- CVE-2016-8576: The xhci_ring_fetch function in hw/usb/hcd-xhci.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit the number of link Transfer Request Blocks (TRB) to process (bsc#1003878).
- CVE-2016-8578: The v9fs_iov_vunmarshal function in fsdev/9p-iov-marshal.c allowed local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) by sending an empty string parameter to a 9P operation (bsc#1003894).
- CVE-2016-9105: Memory leakage in v9fs_link (bsc#1007494).
- CVE-2016-8577: Memory leak in the v9fs_read function in hw/9pfs/9p.c allowed local guest OS administrators to cause a denial of service (memory consumption) via vectors related to an I/O read operation (bsc#1003893).
- CVE-2016-9106: Memory leakage in v9fs_write (bsc#1007495).
- CVE-2016-8669: The serial_update_parameters function in hw/char/serial.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base (bsc#1004707).
- CVE-2016-7909: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1002557).
- CVE-2016-9101: eepro100 memory leakage whern unplugging a device (bsc#1007391).
- CVE-2016-8668: The rocker_io_writel function in hw/net/rocker/rocker.c allowed local guest OS administrators to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging failure to limit DMA buffer size (bsc#1004706).
- CVE-2016-8910: The rtl8139_cplus_transmit function in hw/net/rtl8139.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) by leveraging failure to limit the ring descriptor count (bsc#1006538).
- CVE-2016-8909: The intel_hda_xfer function in hw/audio/intel-hda.c allowed local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via an entry with the same value for buffer length and pointer position (bsc#1006536).
- CVE-2016-7994: Memory leak in virtio_gpu_resource_create_2d (bsc#1003613).
- CVE-2016-9104: Integer overflow leading to OOB access in 9pfs (bsc#1007493).
- CVE-2016-8667: The rc4030_write function in hw/dma/rc4030.c allowed local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value (bsc#1004702).
- CVE-2016-7907: The pcnet_rdra_addr function in hw/net/pcnet.c allowed local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by setting the (1) receive or (2) transmit descriptor ring length to 0 (bsc#1002549).

These non-security issues were fixed:
- Change kvm-supported.txt to be per-architecture documentation, stored in the
package documentation directory of each per-arch package (bsc#1005353).
- Update support doc to include current ARM64 (AArch64) support stance (bsc#1005374).
- Fix migration failure when snapshot also has been done (bsc#1008148).
- Change package post script udevadm trigger calls to be device specific (bsc#1002116).
- Add qmp-commands.txt documentation file back in. It was inadvertently dropped.
- Add an x86 cpu option (l3-cache) to specify that an L3 cache is present and
another option (cpuid-0xb) to enable the cpuid 0xb leaf (bsc#1007769).

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Fixed bugs
bnc#1002549
VUL-0: CVE-2016-7907: qemu: net: inifinte loop in imx_fec_do_tx() function
bnc#1002116
qemu is retriggering device events for *all* devices in its %post
bnc#1001151
VUL-0: CVE-2016-7161: qemu, kvm: hw: net: Heap overflow in xlnx.xps-ethernetlite
bnc#1007494
VUL-0: CVE-2016-9105: qemu: memory leakage in v9fs_link
bnc#1007495
VUL-0: CVE-2016-9106: qemu: 9pfs: memory leakage in v9fs_write
bnc#1007493
VUL-0: CVE-2016-9104: qemu: 9pfs: integer overflow leading to OOB access
bnc#1000345
VUL-0: CVE-2016-7466: qemu: usb: xhci memory leakage during device unplug
bnc#1000346
VUL-0: CVE-2016-7422: qemu: virtio: null pointer dereference in virtqueu_map_desc
bnc#1003894
VUL-0: CVE-2016-8578: qemu, kvm: 9pfs: potential NULL dereference in 9pfs routines
bnc#1003878
VUL-0: CVE-2016-8576: qemu, kvm: usb: xHCI: infinite loop vulnerability in xhci_ring_fetch
bnc#1003893
VUL-0: CVE-2016-8577: qemu, kvm: 9pfs: host memory leakage in v9fs_read
bnc#1007391
VUL-0: CVE-2016-9101: qemu: net: eepro100 memory leakage at device unplug
bnc#1005374
kvm-supported.txt needs update for aarch64
bnc#998516
VUL-1: CVE-2016-7170: qemu: vmware_vga: OOB stack memory access when processing svga command
bnc#1004707
VUL-0: CVE-2016-8669: qemu, kvm: char: divide by zero error in serial_update_parameters
bnc#1004706
VUL-0: CVE-2016-8668: Qemu: net: OOB buffer access in rocker switch emulation
bnc#1002557
VUL-0: CVE-2016-7909: qemu, kvm: net: pcnet: infinite loop in pcnet_rdra_addr
bnc#1005353
kvm-supported.txt should be packaged on aarch64
bnc#1004702
CVE-2016-8667: qemu, kvm: dma: rc4030 divide by zero error in set_next_tick
bnc#1007769
Upstream Qemu virtual L3 patch to improve performance of message-passing workloads
bnc#1008148
Migration fails if a snapshot was created within the session
bnc#1002550
VUL-0: CVE-2016-7908: qemu, kvm: net: Infinite loop in mcf_fec_do_tx
bnc#1006538
VUL-0: CVE-2016-8910: qemu, kvm: net: rtl8139: infinite loop while transmit in C+ mode
bnc#1006536
VUL-0: CVE-2016-8909: qemu, kvm: audio: intel-hda: infinite loop in processing dma buffer stream
bnc#1003612
VUL-0: CVE-2016-7995: qemu: usb: hcd-ehci: memory leak in ehci_process_itd
bnc#1003613
VUL-0: CVE-2016-7994: qemu: virtio-gpu: memory leak in virtio_gpu_resource_create_2d
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