The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via a large I/O descriptor buffer length value.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:2408 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines     that use KVM in environments managed by Red Hat products.

    Security Fix(es):

    * Quick Emulator (QEMU) built with Network Block Device (NBD) Server support was vulnerable to a null-     pointer dereference issue. The flaw could occur when releasing a client that was not initialized due to     failed negotiation. A remote user or process could exploit this flaw to crash the qemu-nbd server (denial     of service). (CVE-2017-9524)

    * An information-exposure flaw was found in Quick Emulator (QEMU) in Task Priority Register (TPR)     optimizations for 32-bit Windows guests. The flaw could occur while accessing TPR. A privileged user     inside a guest could use this issue to read portions of the host memory. (CVE-2016-4020)

    * A memory-leak flaw was found in the Quick Emulator (QEMU) built with USB xHCI controller emulation     support. The flaw could occur while doing a USB-device unplug operation. Unplugging the device repeatedly     resulted in leaking host memory, which affected other services on the host. A privileged user inside the     guest could exploit this flaw to cause a denial of service on the host or potentially crash the host's     QEMU process instance. (CVE-2016-7466)

    * Multiple CVEs were fixed as a result of rebase to QEMU 2.9.0. (CVE-2016-6888, CVE-2016-7422,     CVE-2016-8576, CVE-2016-8669, CVE-2016-8909, CVE-2016-8910, CVE-2016-9907, CVE-2016-9911, CVE-2016-9921,     CVE-2016-9922, CVE-2016-10155, CVE-2017-5579, CVE-2017-5973, CVE-2017-6414, CVE-2017-8309, CVE-2017-8379,     CVE-2017-9310, CVE-2017-9373, CVE-2017-9374, CVE-2017-9375)

    Red Hat would like to thank Donghai Zdh (Alibaba Inc.) for reporting CVE-2016-4020; Li Qiang (Qihoo 360     Inc.) for reporting CVE-2016-6888; Qinghao Tang (Marvel Team 360.cn Inc.) and Zhenhao Hong (Marvel Team     360.cn Inc.) for reporting CVE-2016-7422; Li Qiang (360.cn Inc.) for reporting CVE-2016-7466,     CVE-2016-10155, CVE-2017-5579, CVE-2017-5973, and CVE-2017-6414; PSIRT (Huawei Inc.) for reporting     CVE-2016-8669; Andrew Henderson (Intelligent Automation Inc.) for reporting CVE-2016-8910; Qinghao Tang     (Qihoo 360), Li Qiang (Qihoo 360), and Jiangxin (Huawei Inc.) for reporting CVE-2016-9921 and     CVE-2016-9922; Jiang Xin (PSIRT, Huawei Inc.) for reporting CVE-2017-8309 and CVE-2017-8379; and Li Qiang     (Qihoo 360 Gear Team) for reporting CVE-2017-9310, CVE-2017-9373, CVE-2017-9374, and CVE-2017-9375.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update for qemu-kvm-rhev is now available for RHEV 4.X RHEV-H and Agents for RHEL 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

The following packages have been upgraded to a later upstream version:
qemu-kvm-rhev (2.9.0). (BZ#1387372, BZ#1387600, BZ#1400962)

Security Fix(es) :

* A stack-based buffer overflow flaw was found in the Quick Emulator (QEMU) built with the Network Block Device (NBD) client support. The flaw could occur while processing server's response to a 'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.
(CVE-2017-2630)

* An integer overflow flaw was found in Quick Emulator (QEMU) in the CCID Card device support. The flaw could occur while passing messages via command/response packets to and from the host. A privileged user inside a guest could use this flaw to crash the QEMU process.
(CVE-2017-5898)

* An information exposure flaw was found in Quick Emulator (QEMU) in Task Priority Register (TPR) optimizations for 32-bit Windows guests.
The flaw could occur while accessing TPR. A privileged user inside a guest could use this issue to read portions of the host memory.
(CVE-2016-4020)

* A memory-leak flaw was found in the Quick Emulator(QEMU) built with USB xHCI controller emulation support. The flaw could occur while doing a USB-device unplug operation. Unplugging the device repeatedly resulted in leaking host memory, affecting other services on the host.
A privileged user inside the guest could exploit this flaw to cause a denial of service on the host or potentially crash the host's QEMU process instance. (CVE-2016-7466)

* Multiple CVEs(CVE-2016-10155, CVE-2016-4020, CVE-2016-6835, CVE-2016-6888, CVE-2016-7422, CVE-2016-7466, CVE-2016-8576, CVE-2016-8669, CVE-2016-8909, CVE-2016-8910, CVE-2016-9907, CVE-2016-9911, CVE-2016-9921, CVE-2016-9922, CVE-2017-2630, CVE-2017-5579, CVE-2017-5898, CVE-2017-5973, CVE-2017-9310, CVE-2017-9373, CVE-2017-9374, CVE-2017-9375) were fixed as result of rebase to QEMU version 2.9.0.

Red Hat would like to thank Li Qiang (Qihoo 360 Inc.) for reporting CVE-2016-6835 and CVE-2016-6888; Li Qiang (360.cn Inc.) for reporting CVE-2017-5898, CVE-2016-7466, CVE-2016-10155, CVE-2017-5579, and CVE-2017-5973; Donghai Zdh (Alibaba Inc.) for reporting CVE-2016-4020;
Qinghao Tang (Marvel Team 360.cn Inc.) and Zhenhao Hong (Marvel Team 360.cn Inc.) for reporting CVE-2016-7422; PSIRT (Huawei Inc.) for reporting CVE-2016-8669; Andrew Henderson (Intelligent Automation Inc.) for reporting CVE-2016-8910; Qinghao Tang (Qihoo 360), Li Qiang (Qihoo 360), and Jiangxin (Huawei Inc.) for reporting CVE-2016-9921 and CVE-2016-9922; and Li Qiang (Qihoo 360 Gear Team) for reporting CVE-2017-9310, CVE-2017-9373, CVE-2017-9374, and CVE-2017-9375.

Additional Changes :

This update also fixes several bugs and adds various enhancements.
Documentation for these changes is available from the Release Notes document linked to in the References section.

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.

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).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

- CVE-2016-7155: pvscsi: OOB read and infinite loop (bz     #1373463)

  - CVE-2016-7156: pvscsi: infinite loop when building SG     list (bz #1373480)

  - CVE-2016-7156: pvscsi: infinite loop when processing IO     requests (bz #1373480)

  - CVE-2016-7170: vmware_vga: OOB stack memory access (bz     #1374709)

  - CVE-2016-7157: mptsas: invalid memory access (bz     #1373505)

  - CVE-2016-7466: usb: xhci memory leakage during device     unplug (bz #1377838)

  - CVE-2016-7423: scsi: mptsas: OOB access (bz #1376777)

  - CVE-2016-7422: virtio: NULL pointer dereference (bz     #1376756)

  - CVE-2016-7908: net: Infinite loop in mcf_fec_do_tx (bz     #1381193)

  - CVE-2016-8576: usb: xHCI: infinite loop vulnerability     (bz #1382322)

  - CVE-2016-7995: usb: hcd-ehci: memory leak (bz #1382669)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3125-1 advisory.

    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 emulation support. A     privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of     service. (CVE-2016-7908)

    Li Qiang discovered that QEMU incorrectly handled AMD PC-Net II emulation support. A privileged attacker     inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
    (CVE-2016-7909)

    Li Qiang discovered that QEMU incorrectly handled the Virtio GPU support. A privileged attacker inside the     guest could use this issue to cause QEMU to consume resources, resulting in a denial of service. This     issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7994)

    Li Qiang discovered that QEMU incorrectly handled USB EHCI emulation support. A privileged attacker inside     the guest could use this issue to cause QEMU to consume resources, resulting in a denial of service. This     issue only affected Ubuntu 16.10. (CVE-2016-7995)

    Li Qiang discovered that QEMU incorrectly handled USB xHCI controller 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-2016-8576)

    Li Qiang discovered that QEMU incorrectly handled Plan 9 File System (9pfs) 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-2016-8577, CVE-2016-8578)

    It was discovered that QEMU incorrectly handled Rocker switch 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-2016-8668)

    It was discovered that QEMU incorrectly handled Intel HDA controller emulation support. A privileged     attacker inside the guest could use this issue to cause QEMU to consume resources, resulting in a denial     of service. (CVE-2016-8909)

    Andrew Henderson discovered that QEMU incorrectly handled RTL8139 ethernet controller emulation support. A     privileged attacker inside the guest could use this issue to cause QEMU to consume resources, resulting in     a denial of service. (CVE-2016-8910)

    Li Qiang discovered that QEMU incorrectly handled Intel i8255x ethernet controller emulation support. A     privileged attacker inside the guest could use this issue to cause QEMU to consume resources, resulting in     a denial of service. (CVE-2016-9101)

    Li Qiang discovered that QEMU incorrectly handled Plan 9 File System (9pfs) support. A privileged attacker     inside the guest could use this issue to cause QEMU to consume resources, resulting in a denial of     service. (CVE-2016-9102, CVE-2016-9104, CVE-2016-9105)

    Li Qiang 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 memory. (CVE-2016-9103)

    Li Qiang discovered that QEMU incorrectly handled Plan 9 File System (9pfs) support. A privileged attacker     inside the guest could use this issue to cause QEMU to consume resources, resulting in a denial of     service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9106)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

- CVE-2016-6351: scsi: esp: OOB write access in esp_do_dma     (bz #1360600)

  - CVE-2016-6833: vmxnet3: use-after-free (bz #1368982)

  - CVE-2016-6490: virtio: infinite loop in virtqueue_pop     (bz #1361428)

  - CVE-2016-7156: pvscsi: infinite loop when building SG     list (bz #1373480)

  - CVE-2016-7170: vmware_vga: OOB stack memory access (bz     #1374709)

  - CVE-2016-7161: net: Heap overflow in     xlnx.xps-ethernetlite (bz #1379298)

  - CVE-2016-7466: usb: xhci memory leakage during device     unplug (bz #1377838)

  - CVE-2016-7422: virtio: NULL pointer dereference (bz     #1376756)

  - CVE-2016-7908: net: Infinite loop in mcf_fec_do_tx (bz     #1381193)

  - CVE-2016-8576: usb: xHCI: infinite loop vulnerability     (bz #1382322)

  - CVE-2016-7995: usb: hcd-ehci: memory leak (bz #1382669)

  - Don't depend on edk2 roms where they aren't available     (bz #1373576)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-201609-01 (QEMU: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in QEMU. Please review the       CVE identifiers referenced below for details.
  Impact :

    Local users within a guest QEMU environment can execute arbitrary code       within the host or a cause a Denial of Service condition of the QEMU       guest process.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Severity
210314	RHEL 7 : qemu-kvm-rhev (RHSA-2017:2408)	Nessus	Red Hat Local Security Checks	medium
102158	RHEL 7 : qemu-kvm-rhev (RHSA-2017:2392)	Nessus	Red Hat Local Security Checks	high
96129	openSUSE Security Update : qemu (openSUSE-2016-1504)	Nessus	SuSE Local Security Checks	critical
95283	SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:2879-1)	Nessus	SuSE Local Security Checks	critical
94794	Fedora 25 : 2:qemu (2016-3d3218ec41)	Nessus	Fedora Local Security Checks	medium
94669	Ubuntu 14.04 LTS / 16.04 LTS : QEMU vulnerabilities (USN-3125-1)	Nessus	Ubuntu Local Security Checks	critical
94122	Fedora 24 : 2:qemu (2016-a56fb613a8)	Nessus	Fedora Local Security Checks	critical
93697	GLSA-201609-01 : QEMU: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical

Detections

Analytics

CVE-2016-7422

medium

Tenable Plugins

medium

high

critical

critical

medium

critical

critical

critical