The following security updates has been released for Debian GNU/Linux 8 LTS:

DLA 1493-1: xen security update
DLA 1496-1: lcms2 security update
DLA 1497-1: qemu security update

DLA 1493-1: xen security update

Package : xen
Version : 4.4.4lts1-0+deb8u1
CVE ID : CVE-2016-4963 CVE-2017-14431

Multiple vulnerabilities have been discovered in the Xen hypervisor,
which could result in denial of service, informations leaks or privilege
escalation.

For Debian 8 "Jessie", these problems have been fixed in version
4.4.4lts1-0+deb8u1.

We recommend that you upgrade your xen packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

DLA 1496-1: lcms2 security update

Package : lcms2
Version : 2.6-3+deb8u2
CVE ID : CVE-2018-16435
Debian Bug : #907983

It was discovered that there was an integer overflow vulnerability
in the "Little CMS 2" colour management library. A specially-crafted
input file could lead to a heap-based buffer overflow.

For Debian 8 "Jessie", this issue has been fixed in lcms2 version
2.6-3+deb8u2.

We recommend that you upgrade your lcms2 packages.

DLA 1497-1: qemu security update

Package : qemu
Version : 1:2.1+dfsg-12+deb8u7
CVE ID : CVE-2015-8666 CVE-2016-2198 CVE-2016-6833 CVE-2016-6835
CVE-2016-8576 CVE-2016-8667 CVE-2016-8669 CVE-2016-9602
CVE-2016-9603 CVE-2016-9776 CVE-2016-9907 CVE-2016-9911
CVE-2016-9914 CVE-2016-9915 CVE-2016-9916 CVE-2016-9921
CVE-2016-9922 CVE-2016-10155 CVE-2017-2615 CVE-2017-2620
CVE-2017-5525 CVE-2017-5526 CVE-2017-5579 CVE-2017-5667
CVE-2017-5715 CVE-2017-5856 CVE-2017-5973 CVE-2017-5987
CVE-2017-6505 CVE-2017-7377 CVE-2017-7493 CVE-2017-7718
CVE-2017-7980 CVE-2017-8086 CVE-2017-8112 CVE-2017-8309
CVE-2017-8379 CVE-2017-9330 CVE-2017-9373 CVE-2017-9374
CVE-2017-9503 CVE-2017-10806 CVE-2017-10911
CVE-2017-11434 CVE-2017-14167 CVE-2017-15038
CVE-2017-15289 CVE-2017-16845 CVE-2017-18030
CVE-2017-18043 CVE-2018-5683 CVE-2018-7550
Debian Bug : 813193 834904 835031 840945 840950 847496 847951 847953
847960 851910 852232 853002 853006 853996 854731 855159
855611 855791 856399 856969 857744 859854 860785 861348
861351 862280 862289 863943 864216 864568 865754 867751
869171 869706 874606 877890 880832 882136 886532 887392
892041

Several vulnerabilities were found in qemu, a fast processor emulator:

CVE-2015-8666

Heap-based buffer overflow in QEMU when built with the
Q35-chipset-based PC system emulator

CVE-2016-2198

Null pointer dereference in ehci_caps_write in the USB EHCI support
that may result in denial of service

CVE-2016-6833

Use after free while writing in the vmxnet3 device that could be used
to cause a denial of service

CVE-2016-6835

Buffer overflow in vmxnet_tx_pkt_parse_headers() in vmxnet3 device
that could result in denial of service

CVE-2016-8576

Infinite loop vulnerability in xhci_ring_fetch in the USB xHCI support

CVE-2016-8667 / CVE-2016-8669

Divide by zero errors in set_next_tick in the JAZZ RC4030 chipset
emulator, and in serial_update_parameters of some serial devices, that
could result in denial of service

CVE-2016-9602

Improper link following with VirtFS

CVE-2016-9603

Heap buffer overflow via vnc connection in the Cirrus CLGD 54xx VGA
emulator support

CVE-2016-9776

Infinite loop while receiving data in the ColdFire Fast Ethernet
Controller emulator

CVE-2016-9907

Memory leakage in the USB redirector usb-guest support

CVE-2016-9911

Memory leakage in ehci_init_transfer in the USB EHCI support

CVE-2016-9914 / CVE-2016-9915 / CVE-2016-9916

Plan 9 File System (9pfs): add missing cleanup operation in
FileOperations, in the handle backend and in the proxy backend driver

CVE-2016-9921 / CVE-2016-9922

Divide by zero in cirrus_do_copy in the Cirrus CLGD 54xx VGA Emulator
support

CVE-2016-10155

Memory leak in hw/watchdog/wdt_i6300esb.c allowing local guest OS
privileged users to cause a denial of service via a large number of
device unplug operations.

CVE-2017-2615 / CVE-2017-2620 / CVE-2017-18030 / CVE-2018-5683 / CVE-2017-7718

Out-of-bounds access issues in the Cirrus CLGD 54xx VGA emulator
support, that could result in denial of service

CVE-2017-5525 / CVE-2017-5526

Memory leakage issues in the ac97 and es1370 device emulation

CVE-2017-5579

Most memory leakage in the 16550A UART emulation

CVE-2017-5667

Out-of-bounds access during multi block SDMA transfer in the SDHCI
emulation support.

CVE-2017-5715

Mitigations against the Spectre v2 vulnerability. For more information
please refer to https://www.qemu.org/2018/01/04/spectre/

CVE-2017-5856

Memory leak in the MegaRAID SAS 8708EM2 Host Bus Adapter emulation
support

CVE-2017-5973 / CVE-2017-5987 / CVE-2017-6505

Infinite loop issues in the USB xHCI, in the transfer mode register
of the SDHCI protocol, and the USB ohci_service_ed_list

CVE-2017-7377

9pfs: host memory leakage via v9fs_create

CVE-2017-7493

Improper access control issues in the host directory sharing via
9pfs support.

CVE-2017-7980

Heap-based buffer overflow in the Cirrus VGA device that could allow
local guest OS users to execute arbitrary code or cause a denial of
service

CVE-2017-8086

9pfs: host memory leakage via v9pfs_list_xattr

CVE-2017-8112

Infinite loop in the VMWare PVSCSI emulation

CVE-2017-8309 / CVE-2017-8379

Host memory leakage issues via the audio capture buffer and the
keyboard input event handlers

CVE-2017-9330

Infinite loop due to incorrect return value in USB OHCI that may
result in denial of service

CVE-2017-9373 / CVE-2017-9374

Host memory leakage during hot unplug in IDE AHCI and USB emulated
devices that could result in denial of service

CVE-2017-9503

Null pointer dereference while processing megasas command

CVE-2017-10806

Stack buffer overflow in USB redirector

CVE-2017-10911

Xen disk may leak stack data via response ring

CVE-2017-11434

Out-of-bounds read while parsing Slirp/DHCP options

CVE-2017-14167

Out-of-bounds access while processing multiboot headers that could
result in the execution of arbitrary code

CVE-2017-15038

9pfs: information disclosure when reading extended attributes

CVE-2017-15289

Out-of-bounds write access issue in the Cirrus graphic adaptor that
could result in denial of service

CVE-2017-16845

Information leak in the PS/2 mouse and keyboard emulation support that
could be exploited during instance migration

CVE-2017-18043

Integer overflow in the macro ROUND_UP (n, d) that could result in
denial of service

CVE-2018-7550

Incorrect handling of memory during multiboot that could may result in
execution of arbitrary code

For Debian 8 "Jessie", these problems have been fixed in version
1:2.1+dfsg-12+deb8u7.

We recommend that you upgrade your qemu packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS