This update for xen fixes the following issues: Security issues fixed :

  - CVE-2018-12617: Fix integer overflow that causes     segmentation fault in qmp_guest_file_read() with     g_malloc() (bsc#1098744).

  - CVE-2018-3665: Fix Lazy FP Save/Restore issue (XSA-267)     (bsc#1095242).

  - CVE-2018-11806: Fix heap buffer overflow while     reassembling fragmented datagrams (bsc#1096224).

  - CVE-2018-12891: Fix possible Denial of Service (DoS) via     certain PV MMU operations that affect the entire host     (XSA-264) (bsc#1097521).

  - CVE-2018-12893: Fix crash/Denial of Service (DoS) via     safety check (XSA-265) (bsc#1097522). Bug fixes :

  - bsc#1079730: Fix failed 'write' lock.

  - bsc#1027519: Add upstream patches from January.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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.

This update was imported from the SUSE:SLE-15:Update update project.

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).

  - CVE-2018-11806: Fix heap buffer overflow while     reassembling fragmented datagrams (bsc#1096224).

Bug fixes :

  - bsc#1027519: Add upstream patches from January.

  - bsc#1087289: Fix xen scheduler crash.

This update was imported from the SUSE:SLE-12-SP3:Update update project.

Multiple vulnerabilities have been discovered in the Xen hypervisor :

  - CVE-2018-12891     It was discovered that insufficient validation of PV MMU     operations may result in denial of service.

  - CVE-2018-12892     It was discovered that libxl fails to honour the     'readonly' flag on HVM-emulated SCSI disks.

  - CVE-2018-12893     It was discovered that incorrect implementation of debug     exception checks could result in denial of service.

The remote host is affected by the vulnerability described in GLSA-201810-06 (Xen: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Xen. Please review the       referenced CVE identifiers for details.
  Impact :

    A local attacker could cause a Denial of Service condition or disclose       sensitive information.
  Workaround :

    There is no known workaround at this time.

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 4.4.4lts4-0+deb8u1.

We recommend that you upgrade your xen packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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).

  - CVE-2018-11806: Fix heap buffer overflow while     reassembling fragmented datagrams (bsc#1096224). Bug     fixes :

  - bsc#1027519: Add upstream patches from January.

  - bsc#1087289: Fix xen scheduler crash.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities.

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a local denial of service vulnerability.

Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.

ID	Name	Product	Family	Published	Updated	Severity
111261	SUSE SLES11 Security Update : xen (SUSE-SU-2018:2037-1)	Nessus	SuSE Local Security Checks	7/24/2018	9/3/2024	high
111418	openSUSE Security Update : xen (openSUSE-2018-766)	Nessus	SuSE Local Security Checks	7/30/2018	9/2/2024	critical
111565	openSUSE Security Update : xen (openSUSE-2018-803)	Nessus	SuSE Local Security Checks	8/7/2018	8/23/2024	critical
111346	SUSE SLES12 Security Update : xen (SUSE-SU-2018:2056-1)	Nessus	SuSE Local Security Checks	7/26/2018	9/2/2024	high
110787	Debian DSA-4236-1 : xen - security update	Nessus	Debian Local Security Checks	6/29/2018	9/12/2024	critical
118506	GLSA-201810-06 : Xen: Multiple vulnerabilities (Foreshadow) (Meltdown) (Spectre)	Nessus	Gentoo Local Security Checks	10/31/2018	1/12/2026	critical
118892	Debian DLA-1577-1 : xen security update	Nessus	Debian Local Security Checks	11/13/2018	7/24/2024	high
111348	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:2059-1)	Nessus	SuSE Local Security Checks	7/26/2018	9/2/2024	critical
111378	Citrix XenServer Multiple Vulnerabilities (CTX235748)	Nessus	Misc.	7/27/2018	9/2/2024	medium
111379	Xen Project x86 Paravirtualization Local DoS (XSA-264)	Nessus	Misc.	7/27/2018	6/3/2021	medium

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