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[security-announce] SUSE-SU-2017:3239-1: important: Security update for xen
SUSE Security Update: Security update for xen

Announcement ID: SUSE-SU-2017:3239-1
Rating: important
References: #1055047 #1056336 #1061075 #1061081 #1061086
#1063123 #1068187 #1068191
Cross-References: CVE-2017-13672 CVE-2017-15289 CVE-2017-15592
CVE-2017-15595 CVE-2017-15597
Affected Products:
SUSE Linux Enterprise Server 12-LTSS

An update that solves 5 vulnerabilities and has three fixes
is now available.


This update for xen fixes several issues.

These security issues were fixed:

- bsc#1068187: Failure to recognize errors in the Populate on Demand (PoD)
code allowed for DoS (XSA-246)
- bsc#1068191: Missing p2m error checking in PoD code allowed unprivileged
guests to retain a writable mapping of freed memory leading to
information leaks, privilege escalation or DoS (XSA-247).
- 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
- CVE-2017-15597: A grant copy operation being done on a grant of a dying
domain allowed a malicious guest administrator to corrupt hypervisor
memory, allowing for DoS or potentially privilege escalation and
information leaks (bsc#1061075).
- CVE-2017-15595: x86 PV guest OS users were able to cause a DoS
(unbounded recursion, stack consumption, and hypervisor crash) or
possibly gain privileges via crafted page-table stacking (bsc#1061081).
- CVE-2017-15592: x86 HVM guest OS users were able to cause a DoS
(hypervisor crash) or possibly gain privileges because self-linear
shadow mappings were mishandled for translated guests (bsc#1061086).
- 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#1056336)

This non-security issue was fixed:

- bsc#1055047: Fixed --initrd-inject option in virt-install

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 Server 12-LTSS:

zypper in -t patch SUSE-SLE-SERVER-12-2017-2019=1

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

Package List:

- SUSE Linux Enterprise Server 12-LTSS (x86_64):



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