There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service
    or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB
    flushes. (CVE-2019-17346)

  - An issue was discovered in Xen through 4.11.x allowing x86 guest OS users to cause a denial of service or
    gain privileges because grant-table transfer requests are mishandled. (CVE-2019-17340)

  - An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service
    or gain privileges by leveraging a page-writability race condition during addition of a passed-through PCI
    device. (CVE-2019-17341)

  - An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service
    or gain privileges by leveraging incorrect use of the HVM physmap concept for PV domains. (CVE-2019-17343)

  - An issue was discovered in Xen 4.8.x through 4.11.x allowing x86 PV guest OS users to cause a denial of
    service because mishandling of failed IOMMU operations causes a bug check during the cleanup of a crashed
    guest. (CVE-2019-17345)

Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, guest-to-host privilege escalation or information leaks.

In addition this update provides mitigations for the 'TSX Asynchronous Abort'speculative side channel attack. For additional information please refer to https://xenbits.xen.org/xsa/advisory-305.html

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in Xen 4.8.x through 4.11.x allowing x86 PV guest OS users to cause a denial of     service because mishandling of failed IOMMU operations causes a bug check during the cleanup of a crashed     guest. (CVE-2019-17345)

Note that Nessus relies on the presence of the package as reported by the vendor.

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service vulnerability. Only x86 systems are affected.

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.

This update for xen to version 4.11.2 fixes the following issues :

Security issues fixed :

CVE-2019-15890: Fixed a use-after-free in SLiRP networking implementation of QEMU emulator which could have led to Denial of Service (bsc#1149813).

CVE-2019-12068: Fixed an issue in lsi which could lead to an infinite loop and denial of service (bsc#1146874).

CVE-2019-14378: Fixed a heap buffer overflow in SLiRp networking implementation of QEMU emulator which could have led to execution of arbitrary code with privileges of the QEMU process (bsc#1143797).

Other issues fixed: Fixed an HPS bug which did not allow to install Windows Server 2016 with 2 CPUs setting or above (bsc#1137717).

Fixed a segmentation fault in Libvrtd during live migration to a VM (bsc#1145774).

Fixed an issue where libxenlight could not create new domain (bsc#1131811).

Fixed an issue where attached pci devices were lost after reboot (bsc#1129642).

Fixed an issue where Xen could not pre-allocate 1 shadow page (bsc#1145240).

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-2019-15890: Fixed a use-after-free in SLiRP networking implementation of QEMU emulator which could have led to Denial of Service (bsc#1149813).

CVE-2019-12068: Fixed an issue in lsi which could lead to an infinite loop and denial of service (bsc#1146874).

CVE-2019-14378: Fixed a heap buffer overflow in SLiRp networking implementation of QEMU emulator which could have led to execution of arbitrary code with privileges of the QEMU process (bsc#1143797).

Other issue fixed: Fixed an issue where libxenlight could not restore domain vsa6535522 on live migration (bsc#1133818).

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.

ID	Name	Product	Family	Published	Updated	Severity
435815	Alpine: xen: security update to 4.11.2-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	10/28/2025	7/2/2026	high
435815	Alpine: xen: security update to 4.11.2-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	10/28/2025	7/2/2026	high
407748	Alpine: xen: security update to 4.11.2-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	10/31/2023	11/11/2025	high
407748	Alpine: xen: security update to 4.11.2-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	10/31/2023	11/11/2025	high
132875	Debian DSA-4602-1 : xen - security update (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)	Nessus	Debian Local Security Checks	1/15/2020	5/27/2024	critical
257382	Linux Distros Unpatched Vulnerability : CVE-2019-17345	Nessus	Misc.	8/27/2025	7/29/2026	medium
122874	Xen Project PCI Pass-through Device Denial of Service Vulnerability (XSA-291)	Nessus	Misc.	3/15/2019	11/8/2019	medium
130197	SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2019:2753-1) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)	Nessus	SuSE Local Security Checks	10/24/2019	12/5/2022	high
130253	SUSE SLES12 Security Update : xen (SUSE-SU-2019:2769-1) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)	Nessus	SuSE Local Security Checks	10/25/2019	12/5/2022	high

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