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Vulnerability of Intel Processors: information disclosure via TSX Asynchronous Abort

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via TSX Asynchronous Abort of Intel Processors, in order to obtain sensitive information.
Vulnerable software: XenServer, Debian, Unisphere EMC, Fedora, FreeBSD, HP ProLiant, QRadar SIEM, Linux, McAfee NSM, McAfee Web Gateway, Windows 10, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows 2016, Windows 2019, Windows 7, Windows 8, Windows RT, NetBSD, OpenBSD, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu, ESXi, VMware vSphere Hypervisor, VMware Workstation, Xen.
Severity of this announce: 2/4.
Creation date: 13/11/2019.
Références of this computer vulnerability: 6198355, CERTFR-2019-AVI-554, CERTFR-2019-AVI-555, CERTFR-2019-AVI-558, CERTFR-2019-AVI-559, CERTFR-2019-AVI-560, CERTFR-2019-AVI-561, CERTFR-2019-AVI-563, CERTFR-2019-AVI-571, CERTFR-2019-AVI-575, CERTFR-2019-AVI-612, CERTFR-2019-AVI-635, CERTFR-2020-AVI-029, CERTFR-2020-AVI-056, CTX263684, CVE-2019-11135, DLA-1989-1, DLA-1990-1, DLA-2051-1, DSA-2020-062, DSA-4564-1, DSA-4565-1, DSA-4565-2, DSA-4602-1, FEDORA-2019-1689d3fe07, FEDORA-2019-68d7f68507, FEDORA-2019-7a3fc17778, FreeBSD-SA-19:26.mcu, HPESBHF03968, INTEL-SA-00270, openSUSE-SU-2019:2503-1, openSUSE-SU-2019:2504-1, openSUSE-SU-2019:2505-1, openSUSE-SU-2019:2506-1, openSUSE-SU-2019:2507-1, openSUSE-SU-2019:2509-1, openSUSE-SU-2019:2510-1, openSUSE-SU-2019:2527-1, openSUSE-SU-2019:2528-1, openSUSE-SU-2019:2620-1, openSUSE-SU-2019:2631-1, openSUSE-SU-2019:2710-1, RHSA-2019:3832-01, RHSA-2019:3833-01, RHSA-2019:3834-01, RHSA-2019:3835-01, RHSA-2019:3836-01, RHSA-2019:3837-01, RHSA-2019:3838-01, RHSA-2019:3839-01, RHSA-2019:3840-01, RHSA-2019:3841-01, RHSA-2019:3842-01, RHSA-2019:3843-01, RHSA-2019:3844-01, RHSA-2019:3936-01, RHSA-2020:0026-01, RHSA-2020:0028-01, RHSA-2020:0204-01, RHSA-2020:0279-01, RHSA-2020:0366-01, RHSA-2020:0555-01, RHSA-2020:0666-01, SB10306, SSA:2019-320-01, SUSE-SU-2019:14217-1, SUSE-SU-2019:14218-1, SUSE-SU-2019:14220-1, SUSE-SU-2019:2946-1, SUSE-SU-2019:2947-1, SUSE-SU-2019:2948-1, SUSE-SU-2019:2949-1, SUSE-SU-2019:2950-1, SUSE-SU-2019:2951-1, SUSE-SU-2019:2952-1, SUSE-SU-2019:2953-1, SUSE-SU-2019:2954-1, SUSE-SU-2019:2955-1, SUSE-SU-2019:2956-1, SUSE-SU-2019:2957-1, SUSE-SU-2019:2958-1, SUSE-SU-2019:2959-1, SUSE-SU-2019:2960-1, SUSE-SU-2019:2961-1, SUSE-SU-2019:2962-1, SUSE-SU-2019:2984-1, SUSE-SU-2019:2986-1, SUSE-SU-2019:2987-1, SUSE-SU-2019:2988-1, SUSE-SU-2019:3091-1, SUSE-SU-2019:3200-1, SUSE-SU-2019:3294-1, SUSE-SU-2019:3295-1, SUSE-SU-2019:3297-1, SUSE-SU-2019:3340-1, SUSE-SU-2019:3348-1, SUSE-SU-2020:0093-1, SUSE-SU-2020:0334-1, SUSE-SU-2020:0388-1, USN-4182-1, USN-4182-2, USN-4182-3, USN-4182-4, USN-4183-1, USN-4183-2, USN-4184-1, USN-4184-2, USN-4185-1, USN-4185-2, USN-4185-3, USN-4186-1, USN-4186-2, USN-4186-3, USN-4187-1, USN-4188-1, VIGILANCE-VUL-30847, VMSA-2019-0020, XSA-305.

Description of the vulnerability 

An attacker can bypass access restrictions to data via TSX Asynchronous Abort of Intel Processors, in order to obtain sensitive information.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This computer weakness alert impacts software or systems such as XenServer, Debian, Unisphere EMC, Fedora, FreeBSD, HP ProLiant, QRadar SIEM, Linux, McAfee NSM, McAfee Web Gateway, Windows 10, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows 2016, Windows 2019, Windows 7, Windows 8, Windows RT, NetBSD, OpenBSD, openSUSE Leap, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu, ESXi, VMware vSphere Hypervisor, VMware Workstation, Xen.

Our Vigil@nce team determined that the severity of this weakness note is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this weakness bulletin.

Solutions for this threat 

Linux kernel: version 5.3.11.
The version 5.3.11 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.84.
The version 4.19.84 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.154.
The version 4.14.154 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.202.
The version 4.9.202 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.202.
The version 4.4.202 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 3.16.77.
The version 3.16.77 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v3.x/

Citrix Hypervisor, XenServer: patch for Intel.
A patch is indicated in information sources.

Debian 8: new intel-microcode packages.
New packages are available:
  Debian 8: intel-microcode 3.20191115.2~deb8u1

Debian 8: new linux-4.9 packages.
New packages are available:
  Debian 8: linux-4.9 4.9.189-3+deb9u2~deb8u1

Debian 8: new linux packages.
New packages are available:
  Debian 8: linux 3.16.76-1

Debian 9/10: new intel-microcode packages.
New packages are available:
  Debian 9: intel-microcode 3.20191115.2~deb9u1
  Debian 10: intel-microcode 3.20191115.2~deb10u1

Debian 9/10: new linux packages.
New packages are available:
  Debian 9: linux 4.9.189-3+deb9u2
  Debian 10: linux 4.19.67-2+deb10u2

Debian 9/10: new xen packages.
New packages are available:
  Debian 9: xen 4.8.5.final+shim4.10.4-1+deb9u12
  Debian 10: xen 4.11.3+24-g14b62ab3e5-1~deb10u1

Dell EMC Unisphere for PowerMax: solution.
The solution is indicated in information sources.

Fedora: new kernel-headers packages.
New packages are available:
  Fedora 29: kernel-headers 5.3.11-100.fc29
  Fedora 30: kernel-headers 5.3.11-200.fc30
  Fedora 31: kernel-headers 5.3.11-300.fc31

Fedora: new kernel packages.
New packages are available:
  Fedora 29: kernel 5.3.11-100.fc29
  Fedora 30: kernel 5.3.11-200.fc30
  Fedora 31: kernel 5.3.11-300.fc31

Fedora: new kernel-tools packages.
New packages are available:
  Fedora 29: kernel-tools 5.3.11-100.fc29
  Fedora 30: kernel-tools 5.3.11-200.fc30
  Fedora 31: kernel-tools 5.3.11-300.fc31

Fedora: new microcode_ctl packages.
New packages are available:
  Fedora 29: microcode_ctl 2.1-33.fc29
  Fedora 30: microcode_ctl 2.1-33.fc30
  Fedora 31: microcode_ctl 2.1-33.fc31

FreeBSD: solution for Intel CPU Microcode.
The solution is indicated in information sources.

HPE ProLiant ROM: versions 2.22 and 1.80_11-14-2019.
Versions 2.22 and 1.80_11-14-2019 are fixed:
  https://www.hpe.com/us/en/support.html

IBM QRadar: patch for TSX Asynchronous Abort.
A patch is available:
  QRadar / QRM / QVM / QNI 7.4.0 GA (SFS): https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=IBM%20Security&product=ibm/Other+software/IBM+Security+QRadar+SIEM&release=7.4.0&platform=Linux&function=fixId&fixids=7.4.0-QRADAR-QRSIEM-20200304205308&includeRequisites=1&includeSupersedes=0&downloadMethod=http
  QRadar / QRM / QVM / QRIF / QNI 7.3.3 Patch 2 (SFS): https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=IBM%20Security&product=ibm/Other+software/IBM+Security+QRadar+SIEM&release=7.3.0&platform=Linux&function=fixId&fixids=7.3.3-QRADAR-QRSIEM-20200208135728&includeRequisites=1&includeSupersedes=0&downloadMethod=http
  QRadar / QRM / QVM / QRIF / QNI 7.3.2 Patch 7(SFS): https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=IBM%20Security&product=ibm/Other+software/IBM+Security+QRadar+SIEM&release=7.3.0&platform=Linux&function=fixId&fixids=7.3.2-QRADAR-QRSIEM-20200406171249&includeRequisites=1&includeSupersedes=0&downloadMethod=http
  QRadar Incident Forensics 7.4.0 (ISO): https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=IBM%20Security&product=ibm/Other+software/IBM+Security+QRadar+Incident+Forensics&release=7.4.0&platform=Linux&function=fixId&fixids=7.4.0-QRADAR-QIFFULL-2019.18.0.20200304205308&includeRequisites=1&includeSupersedes=0&downloadMethod=http
  QRadar Incident Forensics 7.4.0 (SFS): https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=IBM%20Security&product=ibm/Other+software/IBM+Security+QRadar+Incident+Forensics&release=7.4.0&platform=Linux&function=fixId&fixids=7.4.0-QRADAR-QIFSFS-2019.18.0.20200304205308&includeRequisites=1&includeSupersedes=0&downloadMethod=http

McAfee: solution for Intel TSX Asynchronous Abort.
The solution is indicated in information sources.

Microsoft Windows: patch of November 2019.
A patch is indicated in information sources.

NetBSD: version 8.2.
The version 8.2 is fixed:
  https://cdn.netbsd.org/pub/NetBSD/NetBSD-8.2/

OpenBSD: patch for Intel Processors.
A patch is available:
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/018_inteldrm.patch.sig
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.6/common/007_inteldrm.patch.sig

openSUSE Leap 15.0: new kernel packages (14/11/2019).
New packages are available:
  openSUSE Leap 15.0: kernel 4.12.14-lp150.12.82.1

openSUSE Leap 15.0: new qemu packages.
New packages are available:
  openSUSE Leap 15.0: qemu 2.11.2-lp150.7.28.1

openSUSE Leap 15.0: new ucode-intel packages.
New packages are available:
  openSUSE Leap 15.0: ucode-intel 20191115-lp150.2.36.1

openSUSE Leap 15.0: new xen packages.
New packages are available:
  openSUSE Leap 15.0: xen 4.10.4_06-lp150.2.25.1

openSUSE Leap 15.1: new kernel packages (14/11/2019).
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.32.1

openSUSE Leap 15.1: new qemu packages (14/11/2019).
New packages are available:
  openSUSE Leap 15.1: qemu 3.1.1.1-lp151.7.6.1

openSUSE Leap 15.1: new spectre-meltdown-checker packages.
New packages are available:
  openSUSE Leap 15.1: spectre-meltdown-checker 0.43-lp151.3.3.1

openSUSE Leap 15.1: new ucode-intel packages.
New packages are available:
  openSUSE Leap 15.1: ucode-intel 20191115-lp151.2.15.1

openSUSE: workaround for Intel CPU.
A workaround is indicated in the information source.

RHEL 6.5: new kernel packages.
New packages are available:
  RHEL 6: kernel 2.6.32-431.96.3.el6

RHEL 6.6: new kernel packages.
New packages are available:
  RHEL 6: kernel 2.6.32-504.81.3.el6

RHEL 6: new kernel packages.
New packages are available:
  RHEL 6: kernel 2.6.32-754.24.2.el6

RHEL 6: new kernel-rt packages.
New packages are available:
  RHEL 6: kernel-rt 3.10.0-693.60.2.rt56.655.el6rt

RHEL 7.2: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-327.82.2.el7

RHEL 7.3: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-514.70.2.el7

RHEL 7.4: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-693.60.2.el7

RHEL 7.5: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-862.43.2.el7

RHEL 7.6: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-957.38.2.el7

RHEL 7.6: new kpatch-patch packages.
New packages are available:
  RHEL 7.6: kpatch-patch 3_10_0-957_35_1-1-5.el7

RHEL 7.6: new qemu-kvm packages.
New packages are available:
  RHEL 7.6: qemu-kvm 1.5.3-160.el7_6.5

RHEL 7.7: new qemu-kvm packages.
New packages are available:
  RHEL 7.7: qemu-kvm 1.5.3-167.el7_7.4

RHEL 7: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-1062.4.2.el7

RHEL 7: new kernel-rt packages.
New packages are available:
  RHEL 7: kernel-rt 3.10.0-1062.4.2.rt56.1028.el7

RHEL 7: new kpatch-patch packages.
New packages are available:
  RHEL 7.0-7.7: kpatch-patch 3_10_0-1062-1-9.el7

RHEL 8.0: new kernel packages.
New packages are available:
  RHEL 8.0: kernel 4.18.0-80.15.1.el8_0

RHEL 8.1: new kernel packages.
New packages are available:
  RHEL 8.1: kernel 4.18.0-147.0.2.el8_1

RHEL 8.1: new kernel-rt packages.
New packages are available:
  RHEL 8.1: kernel-rt 4.18.0-147.0.2.rt24.94.el8_1

RHEL 8.1: new kpatch-patch packages.
New packages are available:
  RHEL 8.1: kpatch-patch 4_18_0-147-1-3.el8_1

RHEL 8.1: new virt-8.1 module.
The following module is updated:
  RHEL 8.1 Module: virt:8.1

RHEL 8: new virt-rhel module.
The following module is updated:
  RHEL 8 Module: virt:rhel

Slackware 14.2: new kernel packages.
New packages are available:
  Slackware 14.2: kernel 4.4.202-*-1

SUSE LE 11: new microcode_ctl packages (14/11/2019).
New packages are available:
  SUSE LE 11 SP3: microcode_ctl 1.17-102.83.47.1
  SUSE LE 11 SP4: microcode_ctl 1.17-102.83.47.1

SUSE LE 11: new microcode_ctl packages (18/11/2019).
New packages are available:
  SUSE LE 11 SP3: microcode_ctl 1.17-102.83.50.1
  SUSE LE 11 SP4: microcode_ctl 1.17-102.83.50.1

SUSE LE 11 SP4: new kernel packages.
New packages are available:
  SUSE LE 11 SP4: kernel 3.0.101-108.108.1

SUSE LE 12: new ucode-intel packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP1: ucode-intel 20191112-13.53.1
  SUSE LE 12 SP2: ucode-intel 20191112-13.53.1
  SUSE LE 12 SP3: ucode-intel 20191112-13.53.1
  SUSE LE 12 SP4: ucode-intel 20191112-13.53.1
  SUSE LE 12 SP5: ucode-intel 20191112-13.53.1

SUSE LE 12: new ucode-intel packages (18/11/2019).
New packages are available:
  SUSE LE 12 SP1: ucode-intel 20191112a-13.56.1
  SUSE LE 12 SP2: ucode-intel 20191112a-13.56.1
  SUSE LE 12 SP3: ucode-intel 20191112a-13.56.1
  SUSE LE 12 SP4: ucode-intel 20191112a-13.56.1

SUSE LE 12 SP1: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP1: kernel 3.12.74-60.64.124.1

SUSE LE 12 SP1: new xen packages.
New packages are available:
  SUSE LE 12 SP1: xen 4.5.5_28-22.64.1

SUSE LE 12 SP2: new kernel packages.
New packages are available:
  SUSE LE 12 SP2: kernel 4.4.121-92.125.1

SUSE LE 12 SP2: new xen packages.
New packages are available:
  SUSE LE 12 SP2: xen 4.7.6_06-43.59.1

SUSE LE 12 SP3: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP3: kernel 4.4.180-94.107.1

SUSE LE 12 SP3: new xen packages (16/12/2019).
New packages are available:
  SUSE LE 12 SP3: xen 4.9.4_06-3.59.1

SUSE LE 12 SP4: new kernel-azure packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP4: kernel-azure 4.12.14-6.29.1

SUSE LE 12 SP4: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP4: kernel 4.12.14-95.40.1

SUSE LE 12 SP4: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP4: kernel-rt 4.12.14-8.9.3

SUSE LE 12 SP4: new qemu packages.
New packages are available:
  SUSE LE 12 SP4: qemu 2.11.2-5.23.2

SUSE LE 12 SP4: new xen packages (13/11/2019).
New packages are available:
  SUSE LE 12 SP4: xen 4.11.2_04-2.17.1

SUSE LE 12 SP5: new kernel-azure packages (15/01/2020).
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.7.1

SUSE LE 12 SP5: new kernel packages (09/12/2019).
New packages are available:
  SUSE LE 12 SP5: kernel 4.12.14-122.7.1

SUSE LE 12 SP5: new spectre-meltdown-checker packages.
New packages are available:
  SUSE LE 12 SP5: spectre-meltdown-checker 0.43-3.3.1

SUSE LE 12 SP5: new ucode-intel packages.
New packages are available:
  SUSE LE 12 SP5: ucode-intel 20191115-3.3.1

SUSE LE 15: new ucode-intel packages.
New packages are available:
  SUSE LE 15 RTM: ucode-intel 20191112a-3.31.1
  SUSE LE 15 SP1: ucode-intel 20191112a-3.13.2

SUSE LE 15 RTM: new kernel-azure packages (13/11/2019).
New packages are available:
  SUSE LE 15 RTM: kernel-azure 4.12.14-5.44.1

SUSE LE 15 RTM: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 15 RTM: kernel 4.12.14-150.41.1

SUSE LE 15 RTM: new qemu packages.
New packages are available:
  SUSE LE 15 RTM: qemu 2.11.2-9.33.1

SUSE LE 15 RTM: new ucode-intel packages.
New packages are available:
  SUSE LE 15 RTM: ucode-intel 20191112-3.28.1

SUSE LE 15 RTM: new xen packages.
New packages are available:
  SUSE LE 15 RTM: xen 4.10.4_06-3.25.1

SUSE LE 15 SP1: new kernel-azure packages (13/11/2019).
New packages are available:
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.19.1

SUSE LE 15 SP1: new kernel packages (13/11/2019).
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.26.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.14.3

SUSE LE 15 SP1: new qemu packages (13/11/2019).
New packages are available:
  SUSE LE 15 SP1: qemu 3.1.1.1-9.6.2

SUSE LE 15 SP1: new spectre-meltdown-checker packages.
New packages are available:
  SUSE LE 15 SP1: spectre-meltdown-checker 0.43-3.3.1

SUSE LE 15 SP1: new ucode-intel packages.
New packages are available:
  SUSE LE 15 SP1: ucode-intel 20191112-3.9.1

SUSE LE 15 SP1: new xen packages.
New packages are available:
  SUSE LE 15 SP1: xen 4.12.1_04-3.6.1

Ubuntu 12.04: new linux-image-3 packages.
New packages are available:
  Ubuntu 12.04 ESM: linux-image-generic 3.2.0.144.159

Ubuntu 14.04: new linux-image-3.13.0 packages.
New packages are available:
  Ubuntu 14.04 ESM: linux-image-generic 3.13.0.175.186

Ubuntu 19.10: new linux-image-5.3.0 packages.
New packages are available:
  Ubuntu 19.10: linux-image-generic 5.3.0.23.27

Ubuntu: new intel-microcode packages.
New packages are available:
  Ubuntu 19.10: intel-microcode 3.20191115.1ubuntu0.19.10.2
  Ubuntu 19.04: intel-microcode 3.20191115.1ubuntu0.19.04.2
  Ubuntu 18.04 LTS: intel-microcode 3.20191115.1ubuntu0.18.04.2
  Ubuntu 16.04 LTS: intel-microcode 3.20191115.1ubuntu0.16.04.2
  Ubuntu 14.04 ESM: intel-microcode 3.20191115.1ubuntu0.14.04.2

Ubuntu: new linux-image-4.15.0 packages.
New packages are available:
  Ubuntu 16.04 LTS: linux-image-generic-hwe-16.04 4.15.0.70.90
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.70.72

Ubuntu: new linux-image-4.4.0 packages.
New packages are available:
  Ubuntu 14.04 ESM: linux-image-generic-lts-xenial 4.4.0.168.147
  Ubuntu 16.04 LTS: linux-image-generic 4.4.0.169.177

Ubuntu: new linux-image-5.0.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.0.0.36.94
  Ubuntu 19.04: linux-image-generic 5.0.0.36.38

VMware ESXi/Workstation: solution for Intel.
The solution is indicated in information sources.

Wind River Linux: solution for Intel.
The solution is indicated in information sources.

Xen: patch for TSX Asynchronous Abort.
A patch is available:
  https://xenbits.xen.org/xsa/xsa305/xsa305-1.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-2.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.8-1.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.8-2.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.9-1.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.9-2.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.10-1.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.10-2.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.11-1.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.11-2.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.12-1.patch
  https://xenbits.xen.org/xsa/xsa305/xsa305-4.12-2.patch

Xen: version 4.11.3.
The version 4.11.3 is fixed:
  http://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=refs/heads/stable-4.11
  https://xenproject.org/downloads/xen-project-archives/xen-project-4-11-series/xen-project-4-11-3/

Xen: version 4.12.2.
The version 4.12.2 is fixed:
  http://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=refs/heads/stable-4.12
  https://xenproject.org/downloads/xen-project-archives/xen-project-4-12-series/xen-project-4-12-2/
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