- CVE-2017-5525: audio: memory leakage in ac97 (bz     #1414110)

  - CVE-2017-5526: audio: memory leakage in es1370 (bz     #1414210)

  - CVE-2016-10155 watchdog: memory leakage in i6300esb (bz     #1415200)

  - CVE-2017-5552: virtio-gpu-3d: memory leakage (bz     #1415283)

  - CVE-2017-5667: sd: sdhci OOB access during multi block     transfer (bz #1417560)

  - CVE-2017-5857: virtio-gpu-3d: host memory leakage in     virgl_cmd_resource_unref (bz #1418383)

  - CVE-2017-5856: scsi: megasas: memory leakage (bz     #1418344)

  - CVE-2017-5898: usb: integer overflow in     emulated_apdu_from_guest (bz #1419700)

  - CVE-2017-5987: sd: infinite loop issue in multi block     transfers (bz #1422001)

  - CVE-2017-6505: usb: an infinite loop issue in     ohci_service_ed_list (bz #1429434)

  - CVE-2017-2615: cirrus: oob access while doing bitblt     copy backward (bz #1418206)

  - CVE-2017-2620: cirrus: potential arbitrary code     execution (bz #1425419)

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.

An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.

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.

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

Security Fix(es) :

* Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. (CVE-2017-2620)

Security Fix(es) :

  - Quick emulator (QEMU) built with the Cirrus CLGD 54xx     VGA Emulator support is vulnerable to an out-of-bounds     access issue. The issue could occur while copying VGA     data in cirrus_bitblt_cputovideo. A privileged user     inside guest could use this flaw to crash the QEMU     process OR potentially execute arbitrary code on host     with privileges of the QEMU process. (CVE-2017-2620)

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 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.

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

Security Fix(es) :

* Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host. (CVE-2017-2615)

* Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. (CVE-2017-2620)

Red Hat would like to thank Wjjzhang (Tencent.com Inc.) and Li Qiang (360.cn Inc.) for reporting CVE-2017-2615.

Bug Fix(es) :

* When using the virtio-blk driver on a guest virtual machine with no space on the virtual hard drive, the guest terminated unexpectedly with a 'block I/O error in device' message and the qemu-kvm process exited with a segmentation fault. This update fixes how the system_reset QEMU signal is handled in the above scenario. As a result, if a guest crashes due to no space left on the device, qemu-kvm continues running and the guest can be reset as expected.
(BZ#1420049)

Security Fix(es) :

  - Quick emulator (QEMU) built with the Cirrus CLGD 54xx     VGA emulator support is vulnerable to an out-of-bounds     access issue. It could occur while copying VGA data via     bitblt copy in backward mode. A privileged user inside a     guest could use this flaw to crash the QEMU process     resulting in DoS or potentially execute arbitrary code     on the host with privileges of QEMU process on the host.
    (CVE-2017-2615)

  - Quick emulator (QEMU) built with the Cirrus CLGD 54xx     VGA Emulator support is vulnerable to an out-of-bounds     access issue. The issue could occur while copying VGA     data in cirrus_bitblt_cputovideo. A privileged user     inside guest could use this flaw to crash the QEMU     process OR potentially execute arbitrary code on host     with privileges of the QEMU process. (CVE-2017-2620)

cirrus_bitblt_cputovideo does not check if memory region is safe [XSA-209, CVE-2017-2620] (#1425420)

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.

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

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025188).

  - 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#1024183).

  - 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#1024834)

  - 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#1024186).

  - CVE-2017-5898: The CCID Card device emulator support was     vulnerable to an integer overflow flaw allowing a     privileged user to crash the Qemu process on the host     resulting in DoS (bsc#1024307).

  - 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)

  - A malicious guest could have, by frequently rebooting     over extended periods of time, run the host system out     of memory, resulting in a Denial of Service (DoS)     (bsc#1022871)

  - CVE-2017-5579: The 16550A UART serial device emulation     support 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#1022627).

  - 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#1014490)

  - 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#1014507)

  - 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#1015169)

  - 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#1015169)

  - CVE-2016-9101: A memory leak in hw/net/eepro100.c     allowed local guest OS administrators to cause a denial     of service (memory consumption and QEMU process crash)     by repeatedly unplugging an i8255x (PRO100) NIC device     (bsc#1013668).

  - 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#1013657)

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.

ID	Name	Product	Family	Published	Updated	Severity
97865	Fedora 24 : 2:qemu (2017-62ac1230f7)	Nessus	Fedora Local Security Checks	3/22/2017	6/3/2021	critical
97472	CentOS 6 : qemu-kvm (CESA-2017:0352)	Nessus	CentOS Local Security Checks	3/2/2017	6/3/2021	critical
97493	Scientific Linux Security Update : qemu-kvm on SL6.x i386/x86_64 (20170301)	Nessus	Scientific Linux Local Security Checks	3/2/2017	6/3/2021	critical
97512	RHEL 7 : qemu-kvm (RHSA-2017:0396)	Nessus	Red Hat Local Security Checks	3/3/2017	10/24/2019	critical
97597	Scientific Linux Security Update : kvm on SL5.x x86_64 (20170307)	Nessus	Scientific Linux Local Security Checks	3/8/2017	6/3/2021	critical
97616	Fedora 24 : xen (2017-1607a3a78e)	Nessus	Fedora Local Security Checks	3/9/2017	6/3/2021	critical
97432	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2017:0570-1)	Nessus	SuSE Local Security Checks	2/28/2017	6/3/2021	critical

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