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[security-announce] openSUSE-SU-2017:0665-1: important: Security update for xen
openSUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID: openSUSE-SU-2017:0665-1
Rating: important
References: #1000195 #1002496 #1005028 #1012651 #1014298
#1014300 #1015169 #1016340 #1022871 #1023004
#1024834
Cross-References: CVE-2016-9921 CVE-2016-9922 CVE-2017-2615
CVE-2017-2620
Affected Products:
openSUSE Leap 42.2
______________________________________________________________________________

An update that solves four vulnerabilities and has 7 fixes
is now available.

Description:


This update for xen 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#1024834).
- 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-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

These non-security issues were fixed:

- bsc#1000195: Prevent panic on CPU0 while booting on SLES 11 SP3
- bsc#1002496: Added support for reloading clvm in block-dmmd block-dmmd
- bsc#1005028: Fixed building Xen RPMs from Sources

This update was imported from the SUSE:SLE-12-SP2:Update update project.


Patch Instructions:

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

- openSUSE Leap 42.2:

zypper in -t patch openSUSE-2017-329=1

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


Package List:

- openSUSE Leap 42.2 (i586 x86_64):

xen-debugsource-4.7.1_06-9.2
xen-devel-4.7.1_06-9.2
xen-libs-4.7.1_06-9.2
xen-libs-debuginfo-4.7.1_06-9.2
xen-tools-domU-4.7.1_06-9.2
xen-tools-domU-debuginfo-4.7.1_06-9.2

- openSUSE Leap 42.2 (x86_64):

xen-4.7.1_06-9.2
xen-doc-html-4.7.1_06-9.2
xen-libs-32bit-4.7.1_06-9.2
xen-libs-debuginfo-32bit-4.7.1_06-9.2
xen-tools-4.7.1_06-9.2
xen-tools-debuginfo-4.7.1_06-9.2


References:

https://www.suse.com/security/cve/CVE-2016-9921.html
https://www.suse.com/security/cve/CVE-2016-9922.html
https://www.suse.com/security/cve/CVE-2017-2615.html
https://www.suse.com/security/cve/CVE-2017-2620.html
https://bugzilla.suse.com/1000195
https://bugzilla.suse.com/1002496
https://bugzilla.suse.com/1005028
https://bugzilla.suse.com/1012651
https://bugzilla.suse.com/1014298
https://bugzilla.suse.com/1014300
https://bugzilla.suse.com/1015169
https://bugzilla.suse.com/1016340
https://bugzilla.suse.com/1022871
https://bugzilla.suse.com/1023004
https://bugzilla.suse.com/1024834

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