CVE-2016-7466

Memory leak in the usb_xhci_exit function in hw/usb/hcd-xhci.c in QEMU (aka Quick Emulator), when the xhci uses msix, allows local guest OS administrators to cause a denial of service (memory consumption and possibly QEMU process crash) by repeatedly unplugging a USB device.

These are all security issues fixed in the qemu-6.1.0-32.1 package on the GA media of openSUSE Tumbleweed.

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…

This update for qemu fixes the following issues:

• Patch queue updated from https://gitlab.suse.de/virtualization/qemu.git SLE12-SP1
• Change package post script udevadm trigger calls to be device specific (bsc#1002116)
• Address various security/stability issues

• Fix OOB access in xlnx.xpx-ethernetlite emulation (CVE-2016-7161 bsc#1001151)
• Fix OOB access in VMware SVGA emulation (CVE-2016-7170 bsc#998516)
• Fix DOS in USB xHCI emulation (CVE-2016-7466 bsc#1000345)
• Fix DOS in Vmware pv scsi interface (CVE-2016-7421 bsc#999661)
• Fix DOS in ColdFire Fast Ethernet Controller emulation (CVE-2016-7908 bsc#1002550)
• Fix DOS in USB xHCI emulation (CVE-2016-8576 bsc#1003878)
• Fix DOS in virtio-9pfs (CVE-2016-8578 bsc#1003894)
• Fix DOS in virtio-9pfs (CVE-2016-9105 bsc#1007494)
• Fix DOS in virtio-9pfs (CVE-2016-8577 bsc#1003893)
• Plug data leak in virtio-9pfs interface (CVE-2016-9103 bsc#1007454)
• Fix DOS in virtio-9pfs interface (CVE-2016-9102 bsc#1007450)
• Fix DOS in virtio-9pfs (CVE-2016-9106 bsc#1007495)
• Fix DOS in 16550A UART emulation (CVE-2016-8669 bsc#1004707)
• Fix DOS in PC-Net II emulation (CVE-2016-7909 bsc#1002557)
• Fix DOS in PRO100 emulation (CVE-2016-9101 bsc#1007391)
• Fix DOS in RTL8139 emulation (CVE-2016-8910 bsc#1006538)
• Fix DOS in Intel HDA controller emulation (CVE-2016-8909 bsc#1006536)
• Fix DOS in virtio-9pfs (CVE-2016-9104 bsc#1007493)
• Fix DOS in JAZZ RC4030 emulation (CVE-2016-8667 bsc#1004702)

• Fix case of disk corruption with migration due to improper internal state tracking (bsc#996524)

Zhenhao Hong discovered that QEMU incorrectly handled the Virtio module. A privileged attacker inside the guest could use this issue to cause QEMU to consume resources, resulting in a denial of service. (CVE-2016-5403)

Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network card emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-6833, CVE-2016-6834, CVE-2016-6888)

Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network card emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-6835)

Li Qiang discovered that QEMU incorrectly handled VMWARE VMXNET3 network card emulation support. A privileged attacker inside the guest could use this issue to possibly to obtain sensitive host memory. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-6836)

Felix Wilhelm discovered that QEMU incorrectly handled Plan 9 File System (9pfs) support. A privileged attacker inside the guest could use this issue to possibly to obtain sensitive host files. (CVE-2016-7116)

Li Qiang and Tom Victor discovered that QEMU incorrectly handled VMWARE PVSCSI paravirtual SCSI bus emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7155)

Li Qiang discovered that QEMU incorrectly handled VMWARE PVSCSI paravirtual SCSI bus emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7156, CVE-2016-7421)

Tom Victor discovered that QEMU incorrectly handled LSI SAS1068 host bus emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.10. (CVE-2016-7157)

Hu Chaojian discovered that QEMU incorrectly handled xlnx.xps-ethernetlite emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2016-7161)

Qinghao Tang and Li Qiang discovered that QEMU incorrectly handled the VMWare VGA module. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-7170)

Qinghao Tang and Zhenhao Hong discovered that QEMU incorrectly handled the Virtio module. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.10. (CVE-2016-7422)

Li Qiang discovered that QEMU incorrectly handled LSI SAS1068 host bus emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.10. (CVE-2016-7423)

Li Qiang discovered that QEMU incorrectly handled USB xHCI controller emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7466)

Li Qiang discovered that QEMU incorrectly handled ColdFire Fast Ethernet Controller…