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SUSE: 2018:1981-1 Important: Xen Critical Issues and Fixes

suse
Calendar Grey July 17, 2018
Dist Suse Esm H88
SUSE enhances xen to tackle critical vulnerabilities affecting Server Applications and Basesystem, highlighting four primary concerns.
An update that solves four vulnerabilities and has four fixes is now available

Summary

This update for xen fixes the following issues: Security issues fixed: - CVE-2018-3665: Fix Lazy FP Save/Restore issue (XSA-267) (bsc#1095242). - CVE-2018-12891: Fix possible Denial of Service (DoS) via certain PV MMU operations that affect the entire host (XSA-264) (bsc#1097521). - CVE-2018-12892: Fix libxl to honour the readonly flag on HVM emulated SCSI disks (XSA-266) (bsc#1097523). - CVE-2018-12893: Fix crash/Denial of Service (DoS) via safety check (XSA-265) (bsc#1097522). Bug fixes: - bsc#1027519: Add upstream patches from January. - bsc#1098403: Fix regression introduced by changes for bsc#1079730. A PV domU without qcow2 and/or vfb has no qemu attached. Ignore QMP errors for PV domUs to handle PV domUs with and without an attached qemu-xen. - bsc#1087289: Fix xen scheduler crash. Patch Instructions:

References

#1027519 #1079730 #1087289 #1095242 #1097521

#1097522 #1097523 #1098403

Cross- CVE-2018-12891 CVE-2018-12892 CVE-2018-12893

CVE-2018-3665

Affected Products:

SUSE Linux Enterprise Module for Server Applications 15

SUSE Linux Enterprise Module for Basesystem 15

https://www.suse.com/security/cve/CVE-2018-12891.html

https://www.suse.com/security/cve/CVE-2018-12892.html

https://www.suse.com/security/cve/CVE-2018-12893.html

https://www.suse.com/security/cve/CVE-2018-3665.html

https://bugzilla.suse.com/1027519

https://bugzilla.suse.com/1079730

https://bugzilla.suse.com/1087289

https://bugzilla.suse.com/1095242

https://bugzilla.suse.com/1097521

https://bugzilla.suse.com/1097522

https://bugzilla.suse.com/1097523

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2018:1981-1
Rating: important

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