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[security-announce] SUSE-SU-2017:1770-1: important: Security update for xen
SUSE Security Update: Security update for xen

Announcement ID: SUSE-SU-2017:1770-1
Rating: important
References: #1014136 #1026236 #1027519 #1031460 #1032148
#1034845 #1036470 #1037243 #1042160 #1042863
#1042882 #1042893 #1042915 #1042924 #1042931
#1042938 #1043074 #1043297
Cross-References: CVE-2017-8112 CVE-2017-8309 CVE-2017-8905
CVE-2017-9330 CVE-2017-9374 CVE-2017-9503

Affected Products:
SUSE Linux Enterprise Software Development Kit 11-SP4
SUSE Linux Enterprise Server 11-SP4
SUSE Linux Enterprise Debuginfo 11-SP4

An update that solves 6 vulnerabilities and has 12 fixes is
now available.


This update for xen fixes several issues.

These security issues were fixed:

- blkif responses leaked backend stack data, which allowed unprivileged
guest to obtain sensitive information from the host or other guests
(XSA-216, bsc#1042863)
- Page transfer might have allowed PV guest to elevate privilege (XSA-217,
- Races in the grant table unmap code allowed for informations leaks and
potentially privilege escalation (XSA-218, bsc#1042893)
- Insufficient reference counts during shadow emulation allowed a
malicious pair of guest to elevate their privileges to the privileges
that XEN runs under (XSA-219, bsc#1042915)
- Stale P2M mappings due to insufficient error checking allowed malicious
guest to leak information or elevate privileges (XSA-222, bsc#1042931)
- Grant table operations mishandled reference counts allowing malicious
guests to escape (XSA-224, bsc#1042938)
- CVE-2017-9330: USB OHCI Emulation in qemu allowed local guest OS users
to cause a denial of service (infinite loop) by leveraging an incorrect
return value (bsc#1042160)
- CVE-2017-8309: Memory leak in the audio/audio.c allowed remote attackers
to cause a denial of service (memory consumption) by repeatedly starting
and stopping audio capture (bsc#1037243)
- CVE-2017-8905: Xen a failsafe callback, which might have allowed PV
guest OS users to execute arbitrary code on the host OS (XSA-215,
- CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation
support was vulnerable to a null pointer dereference issue which allowed
a privileged user inside guest to crash the Qemu process on the host
resulting in DoS (bsc#1043297)
- CVE-2017-9374: Missing free of 's->ipacket', causes a host memory leak,
allowing for DoS (bsc#1043074)
- CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest OS privileged
users to cause a denial of service (infinite loop and CPU consumption)
via the message ring page count (bsc#1036470)
- Missing NULL pointer check in event channel poll allows guests to DoS
the host (XSA-221, bsc#1042924)

These non-security issues were fixed:

- bsc#1032148: Ensure that time doesn't goes backwards during live
migration of HVM domU
- bsc#1031460: Fixed DomU Live Migration
- bsc#1014136: Fixed kdump SLES12-SP2
- bsc#1026236: Equalized paravirtualized vs. fully virtualized migration

Patch Instructions:

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:

- SUSE Linux Enterprise Software Development Kit 11-SP4:

zypper in -t patch sdksp4-xen-13193=1

- SUSE Linux Enterprise Server 11-SP4:

zypper in -t patch slessp4-xen-13193=1

- SUSE Linux Enterprise Debuginfo 11-SP4:

zypper in -t patch dbgsp4-xen-13193=1

To bring your system up-to-date, use "zypper patch".

Package List:

- SUSE Linux Enterprise Software Development Kit 11-SP4 (i586 x86_64):


- SUSE Linux Enterprise Server 11-SP4 (i586 x86_64):


- SUSE Linux Enterprise Server 11-SP4 (x86_64):


- SUSE Linux Enterprise Server 11-SP4 (i586):


- SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64):



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