This update for kvm fixes several issues. These security issues were fixed :

  - CVE-2017-2620: In CIRRUS_BLTMODE_MEMSYSSRC mode the     bitblit copy routine cirrus_bitblt_cputovideo failed to     check the memory region, allowing for an out-of-bounds     write that allows for privilege escalation (bsc#1024972)

  - CVE-2017-2615: An error in the bitblt copy operation     could have allowed a malicious guest administrator to     cause an out of bounds memory access, possibly leading     to information disclosure or privilege escalation     (bsc#1023004)

  - CVE-2016-9776: The ColdFire Fast Ethernet Controller     emulator support was vulnerable to an infinite loop     issue while receiving packets in 'mcf_fec_receive'. A     privileged user/process inside guest could have used     this issue to crash the Qemu process on the host leading     to DoS (bsc#1013285)

  - CVE-2016-9911: The USB EHCI Emulation support was     vulnerable to a memory leakage issue while processing     packet data in 'ehci_init_transfer'. A guest     user/process could have used this issue to leak host     memory, resulting in DoS for the host (bsc#1014111)

  - CVE-2016-9907: The USB redirector usb-guest support was     vulnerable to a memory leakage flaw when destroying the     USB redirector in 'usbredir_handle_destroy'. A guest     user/process could have used this issue to leak host     memory, resulting in DoS for a host (bsc#1014109)

  - CVE-2016-9921: The Cirrus CLGD 54xx VGA Emulator support     was vulnerable to a divide by zero issue while copying     VGA data. A privileged user inside guest could have used     this flaw to crash the process instance on the host,     resulting in DoS (bsc#1014702)

  - CVE-2016-9922: The Cirrus CLGD 54xx VGA Emulator support     was vulnerable to a divide by zero issue while copying     VGA data. A privileged user inside guest could have used     this flaw to crash the process instance on the host,     resulting in DoS (bsc#1014702)

  - CVE-2017-5898: The CCID Card device emulator support was     vulnerable to an integer overflow allowing a privileged     user inside the guest to crash the Qemu process     resulting in DoS (bnc#1023907)

  - CVE-2016-10155: The virtual hardware watchdog     'wdt_i6300esb' was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021129)

  - CVE-2017-5856: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a memory leakage     issue allowing a privileged user to leak host memory     resulting in DoS (bsc#1023053)

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-2016-6836: vmxnet: Information leakage in     vmxnet3_complete_packet (bz #1366370)

  - CVE-2016-7909: pcnet: Infinite loop in pcnet_rdra_addr     (bz #1381196)

  - CVE-2016-7994: virtio-gpu: memory leak in     resource_create_2d (bz #1382667)

  - CVE-2016-8577: 9pfs: host memory leakage in v9fs_read     (bz #1383286)

  - CVE-2016-8578: 9pfs: potential NULL dereferencein 9pfs     routines (bz #1383292)

  - CVE-2016-8668: OOB buffer access in rocker switch     emulation (bz #1384898)

  - CVE-2016-8669: divide by zero error in     serial_update_parameters (bz #1384911)

  - CVE-2016-8909: intel-hda: infinite loop in dma buffer     stream (bz #1388053)

  - Infinite loop vulnerability in a9_gtimer_update (bz     #1388300)

  - CVE-2016-9101: eepro100: memory leakage at device unplug     (bz #1389539)

  - CVE-2016-9103: 9pfs: information leakage via xattr (bz     #1389643)

  - CVE-2016-9102: 9pfs: memory leakage when creating     extended attribute (bz #1389551)

  - CVE-2016-9104: 9pfs: integer overflow leading to OOB     access (bz #1389687)

  - CVE-2016-9105: 9pfs: memory leakage in v9fs_link (bz     #1389704)

  - CVE-2016-9106: 9pfs: memory leakage in v9fs_write (bz     #1389713)

  - CVE-2016-9381: xen: incautious about shared ring     processing (bz #1397385)

  - CVE-2016-9921: Divide by zero vulnerability in     cirrus_do_copy (bz #1399054)

  - CVE-2016-9776: infinite loop while receiving data in     mcf_fec_receive (bz #1400830)

  - CVE-2016-9845: information leakage in     virgl_cmd_get_capset_info (bz #1402247)

  - CVE-2016-9846: virtio-gpu: memory leakage while updating     cursor data (bz #1402258)

  - CVE-2016-9907: usbredir: memory leakage when destroying     redirector (bz #1402266)

  - CVE-2016-9911: usb: ehci: memory leakage in     ehci_init_transfer (bz #1402273)

  - CVE-2016-9913: 9pfs: memory leakage via proxy/handle     callbacks (bz #1402277)

  - CVE-2016-10028: virtio-gpu-3d: OOB access while reading     virgl capabilities (bz #1406368)

  - CVE-2016-9908: virtio-gpu: information leakage in     virgl_cmd_get_capset (bz #1402263)

  - CVE-2016-9912: virtio-gpu: memory leakage when     destroying gpu resource (bz #1402285)

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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:2392 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.

    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 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.

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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
99758	SUSE SLES11 Security Update : kvm (SUSE-SU-2017:1135-1)	Nessus	SuSE Local Security Checks	2017/5/1	2025/12/23	critical
96677	Fedora 25 : 2:qemu (2017-b953d4d3a4)	Nessus	Fedora Local Security Checks	2017/1/23	2026/1/5	high
102158	RHEL 7 : qemu-kvm-rhev (RHSA-2017:2392)	Nessus	Red Hat Local Security Checks	2017/8/3	2025/3/20	high

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