An update for qemu-kvm is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM.

Security Fix(es) :

* Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while loading a kernel image during a guest boot. A user or process could use this flaw to potentially achieve arbitrary code execution on a host.
(CVE-2017-14167)

* Quick emulator (QEMU), compiled with the Cirrus CLGD 54xx VGA Emulator support, is vulnerable to an OOB write access issue. The issue could occur while writing to VGA memory via mode4and5 write functions. A privileged user inside guest could use this flaw to crash the QEMU process resulting in Denial of Serivce (DoS).
(CVE-2017-15289)

Red Hat would like to thank Thomas Garnier (Google.com) for reporting CVE-2017-14167 and Guoxiang Niu (Huawei.com) for reporting CVE-2017-15289.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:3466 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):

    * An assertion-failure flaw was found in the Network Block Device (NBD) server's initial connection     negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent     unexpected data during connection negotiation. A remote user or process could use this flaw to crash the     qemu-nbd server resulting in denial of service. (CVE-2017-7539)

    * Quick Emulator (QEMU) built with the Network Block Device (NBD) Server support is vulnerable to a crash     via a SIGPIPE signal. The crash can occur if a client aborts a connection due to any failure during     negotiation or read operation. A remote user/process could use this flaw to crash the qemu-nbd server     resulting in a Denial of Service (DoS). (CVE-2017-10664)

    * Quick Emulator (QEMU), compiled with qemu_map_ram_ptr to access guests' RAM block area, is vulnerable to     an OOB r/w access issue. The crash can occur if a privileged user inside a guest conducts certain DMA     operations, resulting in a DoS. (CVE-2017-11334)

    * Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is     vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while     loading a kernel image during a guest boot. A user or process could use this flaw to potentially achieve     arbitrary code execution on a host. (CVE-2017-14167)

    * Quick emulator (QEMU), compiled with the Cirrus CLGD 54xx VGA Emulator support, is vulnerable to an OOB     write access issue. The issue could occur while writing to VGA memory via mode4and5 write functions. A     privileged user inside guest could use this flaw to crash the QEMU process resulting in Denial of Serivce     (DoS). (CVE-2017-15289)

    Red Hat would like to thank Alex for reporting CVE-2017-11334; Thomas Garnier (Google.com) for reporting     CVE-2017-14167; and Guoxiang Niu (Huawei.com) for reporting CVE-2017-15289.

    Bug Fix(es):

    * Hot-unplugging Virtual Function I/O (VFIO) devices previously failed when performed after hot-unplugging     a vhost network device. This update fixes the underlying code, and the VFIO device is unplugged correctly     in the described circumstances. (BZ#1498135)

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.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:3470 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):

    * An assertion-failure flaw was found in the Network Block Device (NBD) server's initial connection     negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent     unexpected data during connection negotiation. A remote user or process could use this flaw to crash the     qemu-nbd server resulting in denial of service. (CVE-2017-7539)

    * Quick Emulator (QEMU) built with the Network Block Device (NBD) Server support is vulnerable to a crash     via a SIGPIPE signal. The crash can occur if a client aborts a connection due to any failure during     negotiation or read operation. A remote user/process could use this flaw to crash the qemu-nbd server     resulting in a Denial of Service (DoS). (CVE-2017-10664)

    * Quick Emulator (QEMU), compiled with qemu_map_ram_ptr to access guests' RAM block area, is vulnerable to     an OOB r/w access issue. The crash can occur if a privileged user inside a guest conducts certain DMA     operations, resulting in a DoS. (CVE-2017-11334)

    * Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is     vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while     loading a kernel image during a guest boot. A user or process could use this flaw to potentially achieve     arbitrary code execution on a host. (CVE-2017-14167)

    * Quick emulator (QEMU), compiled with the Cirrus CLGD 54xx VGA Emulator support, is vulnerable to an OOB     write access issue. The issue could occur while writing to VGA memory via mode4and5 write functions. A     privileged user inside guest could use this flaw to crash the QEMU process resulting in Denial of Serivce     (DoS). (CVE-2017-15289)

    Red Hat would like to thank Alex for reporting CVE-2017-11334; Thomas Garnier (Google.com) for reporting     CVE-2017-14167; and Guoxiang Niu (Huawei.com) for reporting CVE-2017-15289.

    Bug Fix(es):

    * Hot-unplugging Virtual Function I/O (VFIO) devices previously failed when performed after hot-unplugging     a vhost network device. This update fixes the underlying code, and the VFIO device is unplugged correctly     in the described circumstances. (BZ#1498140)

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.

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2017-2446:08 advisory.

    * Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is     vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while     loading a kernel image during a guest boot. A user or process could use this flaw to potentially achieve     arbitrary code execution on a host. (CVE-2017-14167)
      * Quick emulator (QEMU), compiled with the Cirrus CLGD 54xx VGA Emulator support, is vulnerable to an     OOB write access issue. The issue could occur while writing to VGA memory via mode4and5 write functions. A     privileged user inside guest could use this flaw to crash the QEMU process resulting in Denial of Serivce     (DoS). (CVE-2017-15289)     Asianux would like to thank Thomas Garnier (Google.com) for reporting CVE-2017-14167 and Guoxiang Niu     (Huawei.com) for reporting CVE-2017-15289.
    CVE-2017-14167     Integer overflow in the load_multiboot function in hw/i386/multiboot.c     in QEMU (aka Quick Emulator) allows local guest OS users to execute     arbitrary code on the host via crafted multiboot header address     values, which trigger an out-of-bounds write.
    CVE-2017-15289     The mode4and5 write functions in hw/display/cirrus_vga.c in Qemu allow     local OS guest privileged users to cause a denial of service     (out-of-bounds write access and Qemu process crash) via vectors     related to dst calculation.

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

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

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4585 advisory.

    - usb-mtp: use O_NOFOLLOW and O_CLOEXEC. (Gerd Hoffmann)  [Orabug: 29216656]  {CVE-2018-16872}
    - pvrdma: add uar_read routine (Prasad J Pandit)  [Orabug: 29216658]  {CVE-2018-20191}
    - pvrdma: release ring object in case of an error (Prasad J Pandit)  [Orabug: 29216659]  {CVE-2018-20126}
    - pvrdma: check number of pages when creating rings (Prasad J Pandit)  [Orabug: 29216666]     {CVE-2018-20125}
    - pvrdma: check return value from pvrdma_idx_ring_has_ routines (Prasad J Pandit)  [Orabug: 29216672]     {CVE-2018-20216}
    - rdma: remove unused VENDOR_ERR_NO_SGE macro (Prasad J Pandit)  [Orabug: 29216678]  {CVE-2018-20124}
    - rdma: check num_sge does not exceed MAX_SGE (Prasad J Pandit)  [Orabug: 29216678]  {CVE-2018-20124}
    - Document various CVEs as fixed (Mark Kanda)  [Orabug: 29212424]  {CVE-2017-10806} {CVE-2017-11334}     {CVE-2017-12809} {CVE-2017-13672} {CVE-2017-13673} {CVE-2017-13711} {CVE-2017-14167} {CVE-2017-15038}     {CVE-2017-15119} {CVE-2017-15124} {CVE-2017-15268} {CVE-2017-15289} {CVE-2017-16845} {CVE-2017-17381}     {CVE-2017-18030} {CVE-2017-18043} {CVE-2017-2630} {CVE-2017-2633} {CVE-2017-5715} {CVE-2017-5753}     {CVE-2017-5754} {CVE-2017-7471} {CVE-2017-7493} {CVE-2017-8112} {CVE-2017-8309} {CVE-2017-8379}     {CVE-2017-8380} {CVE-2017-9503} {CVE-2018-10839} {CVE-2018-11806} {CVE-2018-12617} {CVE-2018-15746}     {CVE-2018-16847} {CVE-2018-16867} {CVE-2018-17958} {CVE-2018-17962} {CVE-2018-17963} {CVE-2018-18849}     {CVE-2018-19364} {CVE-2018-19489} {CVE-2018-3639} {CVE-2018-5683} {CVE-2018-7550} {CVE-2018-7858}

Tenable has extracted the preceding description block directly from the Oracle 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.

This update for qemu to version 2.9.1 fixes several issues.

It also announces that the qed storage format will be no longer supported in Leap 15.0.

These security issues were fixed :

  - CVE-2017-15268: Qemu allowed remote attackers to cause a     memory leak by triggering slow data-channel read     operations, related to io/channel-websock.c     (bsc#1062942)

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-10911: The make_response function in the Linux     kernel allowed guest OS users to obtain sensitive     information from host OS (or other guest OS) kernel     memory by leveraging the copying of uninitialized     padding fields in Xen block-interface response     structures (bsc#1057378)

  - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator     support allowed local guest OS privileged users to cause     a denial of service (NULL pointer dereference and QEMU     process crash) by flushing an empty CDROM device drive     (bsc#1054724)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-13711: Use-after-free vulnerability allowed     attackers to cause a denial of service (QEMU instance     crash) by leveraging failure to properly clear ifq_so     from pending packets (bsc#1056291).

These non-security issues were fixed :

  - Fixed not being able to build from rpm sources due to     undefined macro (bsc#1057966)

  - Fiedx package build failure against new glibc     (bsc#1055587)

This update was imported from the SUSE:SLE-12-SP3:Update update project.

Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while loading a kernel image during a guest boot. A user or process could use this flaw to potentially achieve arbitrary code execution on a host.
(CVE-2017-14167)

Quick emulator (QEMU), compiled with the Cirrus CLGD 54xx VGA Emulator support, is vulnerable to an OOB write access issue. The issue could occur while writing to VGA memory via mode4and5 write functions. A privileged user inside guest could use this flaw to crash the QEMU process resulting in Denial of Serivce (DoS). (CVE-2017-15289)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:3473 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):

    * An assertion-failure flaw was found in the Network Block Device (NBD) server's initial connection     negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent     unexpected data during connection negotiation. A remote user or process could use this flaw to crash the     qemu-nbd server resulting in denial of service. (CVE-2017-7539)

    * Quick Emulator (QEMU) built with the Network Block Device (NBD) Server support is vulnerable to a crash     via a SIGPIPE signal. The crash can occur if a client aborts a connection due to any failure during     negotiation or read operation. A remote user/process could use this flaw to crash the qemu-nbd server     resulting in a Denial of Service (DoS). (CVE-2017-10664)

    * Quick Emulator (QEMU), compiled with qemu_map_ram_ptr to access guests' RAM block area, is vulnerable to     an OOB r/w access issue. The crash can occur if a privileged user inside a guest conducts certain DMA     operations, resulting in a DoS. (CVE-2017-11334)

    * Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is     vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while     loading a kernel image during a guest boot. A user or process could use this flaw to potentially achieve     arbitrary code execution on a host. (CVE-2017-14167)

    * Quick emulator (QEMU), compiled with the Cirrus CLGD 54xx VGA Emulator support, is vulnerable to an OOB     write access issue. The issue could occur while writing to VGA memory via mode4and5 write functions. A     privileged user inside guest could use this flaw to crash the QEMU process resulting in Denial of Serivce     (DoS). (CVE-2017-15289)

    Red Hat would like to thank Alex for reporting CVE-2017-11334; Thomas Garnier (Google.com) for reporting     CVE-2017-14167; and Guoxiang Niu (Huawei.com) for reporting CVE-2017-15289.

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.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:3474 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):

    * An assertion-failure flaw was found in the Network Block Device (NBD) server's initial connection     negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent     unexpected data during connection negotiation. A remote user or process could use this flaw to crash the     qemu-nbd server resulting in denial of service. (CVE-2017-7539)

    * Quick Emulator (QEMU) built with the Network Block Device (NBD) Server support is vulnerable to a crash     via a SIGPIPE signal. The crash can occur if a client aborts a connection due to any failure during     negotiation or read operation. A remote user/process could use this flaw to crash the qemu-nbd server     resulting in a Denial of Service (DoS). (CVE-2017-10664)

    * Quick Emulator (QEMU), compiled with qemu_map_ram_ptr to access guests' RAM block area, is vulnerable to     an OOB r/w access issue. The crash can occur if a privileged user inside a guest conducts certain DMA     operations, resulting in a DoS. (CVE-2017-11334)

    * Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is     vulnerable to an OOB r/w memory access issue. The issue could occur due to an integer overflow while     loading a kernel image during a guest boot. A user or process could use this flaw to potentially achieve     arbitrary code execution on a host. (CVE-2017-14167)

    * Quick emulator (QEMU), compiled with the Cirrus CLGD 54xx VGA Emulator support, is vulnerable to an OOB     write access issue. The issue could occur while writing to VGA memory via mode4and5 write functions. A     privileged user inside guest could use this flaw to crash the QEMU process resulting in Denial of Serivce     (DoS). (CVE-2017-15289)

    Red Hat would like to thank Alex for reporting CVE-2017-11334; Thomas Garnier (Google.com) for reporting     CVE-2017-14167; and Guoxiang Niu (Huawei.com) for reporting CVE-2017-15289.

    Bug Fix(es):

    * Hot-unplugging Virtual Function I/O (VFIO) devices previously failed when performed after hot-unplugging     a vhost network device. This update fixes the underlying code, and the VFIO device is unplugged correctly     in the described circumstances. (BZ#1498139)

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
105057	CentOS 7 : qemu-kvm (CESA-2017:3368)	Nessus	CentOS Local Security Checks	2017/12/7	2021/1/4	high
194082	RHEL 7 : qemu-kvm-rhev (RHSA-2017:3466)	Nessus	Red Hat Local Security Checks	2024/4/27	2024/6/3	high
210280	RHEL 7 : qemu-kvm-rhev (RHSA-2017:3470)	Nessus	Red Hat Local Security Checks	2024/11/5	2024/11/5	high
289528	MiracleLinux 7 : qemu-kvm-1.5.3-141.el7.4 (AXSA:2017-2446:08)	Nessus	Miracle Linux Local Security Checks	2026/1/16	2026/1/16	high
180740	Oracle Linux 7 : qemu (ELSA-2019-4585)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2026/1/9	critical
104423	openSUSE Security Update : qemu (openSUSE-2017-1248)	Nessus	SuSE Local Security Checks	2017/11/7	2025/11/14	high
105419	Amazon Linux AMI : qemu-kvm (ALAS-2017-934)	Nessus	Amazon Linux Local Security Checks	2017/12/26	2025/11/11	high
194084	RHEL 7 : qemu-kvm-rhev (RHSA-2017:3473)	Nessus	Red Hat Local Security Checks	2024/4/27	2024/6/3	high
210317	RHEL 7 : qemu-kvm-rhev (RHSA-2017:3474)	Nessus	Red Hat Local Security Checks	2024/11/5	2025/4/15	high

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