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CVE-2019-18424

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via...

6.8 MediumFix available

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.

Attack profile

How easy it is to exploit

Attack vector
Physical
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.50%Down 1.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.8

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.

Record
CVE-2019-18424
CVSS 3.1
6.8 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
6.9 MediumAV:L/AC:M/Au:N/C:C/I:C/A:C
Weakness
CWE-78
Updated
2026-11-02
CVE List No score

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.

Record
CVE-2019-18424
Updated
2026-11-02
EUVDEUVD-2019-8193 No score

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.

Record
EUVD-2019-8193
Updated
2026-11-03
GitHub AdvisoriesGHSA-3q68-jh6h-39cm 6.8

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via...

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.

Record
GHSA-3q68-jh6h-39cm
CVSS 3.1
6.8 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-78
Updated
2026-11-02
OSVALPINE-CVE-2019-18424 6.8

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.

Record
ALPINE-CVE-2019-18424
CVSS 3.1
6.8 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSV 6.8

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.

Record
CVE-2019-18424
CVSS 3.1
6.8 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 12 moreShow less
OSVDEBIAN-CVE-2019-18424 6.8

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.

Record
DEBIAN-CVE-2019-18424
CVSS 3.1
6.8 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2019-18424 6.8

An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device. This occurs because passed through PCI devices may corrupt host memory after deassignment. When a PCI device is assigned to an untrusted domain, it is possible for that domain to program the device to DMA to an arbitrary address. The IOMMU is used to protect the host from malicious DMA by making sure that the device addresses can only target memory assigned to the guest. However, when the guest domain is torn down, or the device is deassigned, the device is assigned back to dom0, thus allowing any in-flight DMA to potentially target critical host data. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.

Record
UBUNTU-CVE-2019-18424
CVSS 3.1
6.8 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2020-0113 No score

Updated xen packages fix security vulnerability

  • Updated from 4.12.0 to 4.12.1
  • Device quarantine for alternate pci assignment methods [XSA-306]
  • x86: Machine Check Error on Page Size Change DoS [XSA-304, CVE-2018-12207]
  • TSX Asynchronous Abort speculative side channel [XSA-305, CVE-2019-11135]
  • VCPUOP_initialise DoS [XSA-296, CVE-2019-18420] (rhbz#1771368)
  • missing descriptor table limit checking in x86 PV emulation [XSA-298, CVE-2019-18425] (rhbz#1771341)
  • Issues with restartable PV type change operations [XSA-299, CVE-2019-18421] (rhbz#1767726)
  • add-to-physmap can be abused to DoS Arm hosts [XSA-301, CVE-2019-18423] (rhbz#1771345)
  • passed through PCI devices may corrupt host memory after deassignment [XSA-302, CVE-2019-18424] (rhbz#1767731)
  • ARM: Interrupts are unconditionally unmasked in exception handlers [XSA-303, CVE-2019-18422] (rhbz#1771443)
  • Unlimited Arm Atomics Operations [XSA-295, CVE-2019-17349, CVE-2019-17350] (rhbz#1720760)
  • fix HVM DomU boot on some chipsets
  • adjust grub2 workaround
Record
MGASA-2020-0113
Updated
2026-11-02
OSVopenSUSE-SU-2019:2506-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional. (bsc#1155945)
  • CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with Transactional Memory support could be used to facilitate sidechannel information leaks out of microarchitectural buffers, similar to the previously described 'Microarchitectural Data Sampling' attack. (bsc#1152497).
  • CVE-2019-18425: 32-bit PV guest user mode could elevate its privileges to that of the guest kernel. (bsc#1154456).
  • CVE-2019-18421: A malicious PV guest administrator may have been able to escalate their privilege to that of the host. (bsc#1154458).
  • CVE-2019-18420: Malicious x86 PV guests may have caused a hypervisor crash, resulting in a Denial of Service (Dos). (bsc#1154448)

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

Record
openSUSE-SU-2019:2506-1
Updated
2026-11-02
OSVSUSE-SU-2019:2960-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional. (bsc#1155945)
  • CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with Transactional Memory support could be used to facilitate sidechannel information leaks out of microarchitectural buffers, similar to the previously described 'Microarchitectural Data Sampling' attack. (bsc#1152497).
  • CVE-2019-18425: 32-bit PV guest user mode could elevate its privileges to that of the guest kernel. (bsc#1154456).
  • CVE-2019-18421: A malicious PV guest administrator may have been able to escalate their privilege to that of the host. (bsc#1154458).
  • CVE-2019-18420: Malicious x86 PV guests may have caused a hypervisor crash, resulting in a Denial of Service (Dos). (bsc#1154448)
Record
SUSE-SU-2019:2960-1
Updated
2026-11-02
OSVSUSE-SU-2019:2961-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional. (bsc#1155945)
  • CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with Transactional Memory support could be used to facilitate sidechannel information leaks out of microarchitectural buffers, similar to the previously described 'Microarchitectural Data Sampling' attack. (bsc#1152497).
  • CVE-2019-18423: A malicious guest administrator may cause a hypervisor crash, resulting in a Denial of Service (DoS). (bsc#1154460).
  • CVE-2019-18422: A malicious ARM guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified. (bsc#1154464)
  • CVE-2019-18424: An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. (bsc#1154461).
  • CVE-2019-18421: A malicious PV guest administrator may have been able to escalate their privilege to that of the host. (bsc#1154458).
  • CVE-2019-18425: 32-bit PV guest user mode could elevate its privileges to that of the guest kernel. (bsc#1154456).
  • CVE-2019-18420: Malicious x86 PV guests may have caused a hypervisor crash, resulting in a Denial of Service (Dos). (bsc#1154448)
  • Upstream bug fixes (bsc#1027519)
Record
SUSE-SU-2019:2961-1
Updated
2026-11-02
OSVSUSE-SU-2019:2962-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional. (bsc#1155945)
  • CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with Transactional Memory support could be used to facilitate sidechannel information leaks out of microarchitectural buffers, similar to the previously described 'Microarchitectural Data Sampling' attack. (bsc#1152497).
  • CVE-2019-18424: An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. (bsc#1154461).
  • CVE-2019-18421: A malicious PV guest administrator may have been able to escalate their privilege to that of the host. (bsc#1154458).
  • CVE-2019-18425: 32-bit PV guest user mode could elevate its privileges to that of the guest kernel. (bsc#1154456).
  • CVE-2019-18420: Malicious x86 PV guests may have caused a hypervisor crash, resulting in a Denial of Service (Dos). (bsc#1154448)
Record
SUSE-SU-2019:2962-1
Updated
2026-11-02
OSVSUSE-SU-2019:3297-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2019-19581: Fixed a potential out of bounds on 32-bit Arm (bsc#1158003 XSA-307).
  • CVE-2019-19582: Fixed a potential infinite loop when x86 accesses to bitmaps with a compile time known size of 64 (bsc#1158003 XSA-307).
  • CVE-2019-19583: Fixed improper checks which could have allowed HVM/PVH guest userspace code to crash the guest,leading to a guest denial of service (bsc#1158004 XSA-308).
  • CVE-2019-19578: Fixed an issue where a malicious or buggy PV guest could have caused hypervisor crash resulting in denial of service affecting the entire host (bsc#1158005 XSA-309).
  • CVE-2019-19580: Fixed a privilege escalation where a malicious PV guest administrator could have been able to escalate their privilege to that of the host (bsc#1158006 XSA-310).
  • CVE-2019-19577: Fixed an issue where a malicious guest administrator could have caused Xen to access data structures while they are being modified leading to a crash (bsc#1158007 XSA-311).
  • CVE-2019-19579: Fixed a privilege escaltion where an untrusted domain with access to a physical device can DMA into host memory (bsc#1157888 XSA-306).
  • CVE-2019-18420: Malicious x86 PV guests may have caused a hypervisor crash, resulting in a denial of service (bsc#1154448 XSA-296)
  • CVE-2019-18425: 32-bit PV guest user mode could elevate its privileges to that of the guest kernel. (bsc#1154456 XSA-298).
  • CVE-2019-18421: A malicious PV guest administrator may have been able to escalate their privilege to that of the host. (bsc#1154458 XSA-299).
  • CVE-2019-18423: A malicious guest administrator may cause a hypervisor crash, resulting in a denial of service (bsc#1154460 XSA-301).
  • CVE-2019-18422: A malicious ARM guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified. (bsc#1154464 XSA-303)
  • CVE-2019-18424: An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. (bsc#1154461 XSA-302).
  • CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional. (bsc#1155945 XSA-304)
  • CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with Transactional Memory support could be used to facilitate sidechannel information leaks out of microarchitectural buffers, similar to the previously described 'Microarchitectural Data Sampling' attack. (bsc#1152497 XSA-305).
Record
SUSE-SU-2019:3297-1
Updated
2026-11-02
OSVSUSE-SU-2019:3310-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2019-19581: Fixed a potential out of bounds on 32-bit Arm (bsc#1158003 XSA-307).
  • CVE-2019-19582: Fixed a potential infinite loop when x86 accesses to bitmaps with a compile time known size of 64 (bsc#1158003 XSA-307).
  • CVE-2019-19583: Fixed improper checks which could have allowed HVM/PVH guest userspace code to crash the guest,leading to a guest denial of service (bsc#1158004 XSA-308).
  • CVE-2019-19578: Fixed an issue where a malicious or buggy PV guest could have caused hypervisor crash resulting in denial of service affecting the entire host (bsc#1158005 XSA-309).
  • CVE-2019-19580: Fixed a privilege escalation where a malicious PV guest administrator could have been able to escalate their privilege to that of the host (bsc#1158006 XSA-310).
  • CVE-2019-19577: Fixed an issue where a malicious guest administrator could have caused Xen to access data structures while they are being modified leading to a crash (bsc#1158007 XSA-311).
  • CVE-2019-19579: Fixed a privilege escaltion where an untrusted domain with access to a physical device can DMA into host memory (bsc#1157888 XSA-306).
  • CVE-2019-18423: A malicious guest administrator may cause a hypervisor crash, resulting in a Denial of Service (DoS). (bsc#1154460).
  • CVE-2019-18424: An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. (bsc#1154461).
  • CVE-2019-18422: A malicious ARM guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified. (bsc#1154464)
Record
SUSE-SU-2019:3310-1
Updated
2026-11-02
OSVSUSE-SU-2020:0334-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2020-7211: potential directory traversal using relative paths via tftp server on Windows host (bsc#1161181).
  • CVE-2019-19579: Device quarantine for alternate pci assignment methods (bsc#1157888).
  • CVE-2019-19581: find_next_bit() issues (bsc#1158003).
  • CVE-2019-19583: VMentry failure with debug exceptions and blocked states (bsc#1158004).
  • CVE-2019-19578: Linear pagetable use / entry miscounts (bsc#1158005).
  • CVE-2019-19580: Further issues with restartable PV type change operations (bsc#1158006).
  • CVE-2019-19577: dynamic height for the IOMMU pagetables (bsc#1158007).
  • CVE-2019-18420: VCPUOP_initialise DoS (bsc#1154448).
  • CVE-2019-18425: missing descriptor table limit checking in x86 PV emulation (bsc#1154456).
  • CVE-2019-18421: Issues with restartable PV type change operations (bsc#1154458).
  • CVE-2019-18424: passed through PCI devices may corrupt host memory after deassignment (bsc#1154461).
  • CVE-2018-12207: Machine Check Error Avoidance on Page Size Change (aka IFU issue) (bsc#1155945).
  • CVE-2019-11135: TSX Asynchronous Abort (TAA) issue (bsc#1152497).
Record
SUSE-SU-2020:0334-1
Updated
2026-11-02
OSVSUSE-SU-2020:0388-1 No score

Security update for xen

This update for xen fixes the following issues:

  • CVE-2018-12207: Fixed a race condition where untrusted virtual machines could have been using the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional (bsc#1155945 XSA-304).
  • CVE-2018-19965: Fixed a DoS from attempting to use INVPCID with a non-canonical addresses (bsc#1115045 XSA-279).
  • CVE-2019-11135: Aborting an asynchronous TSX operation on Intel CPUs with Transactional Memory support could be used to facilitate side-channel information leaks out of microarchitectural buffers, similar to the previously described 'Microarchitectural Data Sampling' attack. (bsc#1152497 XSA-305).
  • CVE-2019-12067: Fixed a null pointer dereference in QEMU AHCI (bsc#1145652).
  • CVE-2019-12068: Fixed an infinite loop while executing script (bsc#1146874).
  • CVE-2019-12155: Fixed a null pointer dereference while releasing spice resources (bsc#1135905).
  • CVE-2019-14378: Fixed a heap buffer overflow during packet reassembly in slirp networking implementation (bsc#1143797).
  • CVE-2019-15890: Fixed a use-after-free during packet reassembly (bsc#1149813).
  • CVE-2019-17340: Fixed grant table transfer issues on large hosts (XSA-284 bsc#1126140).
  • CVE-2019-17341: Fixed a race with pass-through device hotplug (XSA-285 bsc#1126141).
  • CVE-2019-17342: Fixed steal_page violating page_struct access discipline (XSA-287 bsc#1126192).
  • CVE-2019-17343: Fixed an inconsistent PV IOMMU discipline (XSA-288 bsc#1126195).
  • CVE-2019-17344: Fixed a missing preemption in x86 PV page table unvalidation (XSA-290 bsc#1126196).
  • CVE-2019-17347: Fixed a PV kernel context switch corruption (XSA-293 bsc#1126201).
  • CVE-2019-18420: Fixed a hypervisor crash that could be caused by malicious x86 PV guests, resulting in a denial of service (bsc#1154448 XSA-296).
  • CVE-2019-18421: Fixed a privilege escalation through malicious PV guest administrators (bsc#1154458 XSA-299).
  • CVE-2019-18424: Fixed a privilege escalation through DMA to physical devices by untrusted domains (bsc#1154461 XSA-302).
  • CVE-2019-18425: Fixed a privilege escalation from 32-bit PV guest used mode (bsc#1154456 XSA-298).
  • CVE-2019-19577: Fixed an issue where a malicious guest administrator could have caused Xen to access data structures while they are being modified leading to a crash (bsc#1158007 XSA-311).
  • CVE-2019-19578: Fixed an issue where a malicious or buggy PV guest could have caused hypervisor crash resulting in denial of service affecting the entire host (bsc#1158005 XSA-309).
  • CVE-2019-19579: Fixed a privilege escalation where an untrusted domain with access to a physical device can DMA into host memory (bsc#1157888 XSA-306).
  • CVE-2019-19580: Fixed a privilege escalation where a malicious PV guest administrator could have been able to escalate their privilege to that of the host (bsc#1158006 XSA-310).
  • CVE-2019-19581: Fixed a potential out of bounds on 32-bit Arm (bsc#1158003 XSA-307).
  • CVE-2019-19583: Fixed improper checks which could have allowed HVM/PVH guest userspace code to crash the guest, leading to a guest denial of service (bsc#1158004 XSA-308).
Record
SUSE-SU-2020:0388-1
Updated
2026-11-02
OSVSUSE-SU-2020:14444-1 No score

Security update for xen

This update for xen fixes the following issues:

  • bsc#1174543 - secure boot related fixes
  • bsc#1163019 - CVE-2020-8608: potential OOB access due to unsafe snprintf() usages
  • bsc#1169392 - CVE-2020-11742: Bad continuation handling in GNTTABOP_copy
  • bsc#1168140 - CVE-2020-11740, CVE-2020-11741: multiple xenoprof issues
  • bsc#1161181 - CVE-2020-7211: potential directory traversal using relative paths via tftp server on Windows host
  • bsc#1157888 - CVE-2019-19579: Device quarantine for alternate pci assignment methods
  • bsc#1158004 - CVE-2019-19583: VMX: VMentry failure with debug exceptions and blocked states
  • bsc#1158005 - CVE-2019-19578: Linear pagetable use / entry miscounts
  • bsc#1158006 - CVE-2019-19580: Further issues with restartable PV type change operations
  • bsc#1158007 - CVE-2019-19577: dynamic height for the IOMMU pagetables
  • bsc#1154448 - CVE-2019-18420: VCPUOP_initialise DoS
  • bsc#1154456 - CVE-2019-18425: missing descriptor table limit checking in x86 PV emulation
  • bsc#1154458 - CVE-2019-18421: Issues with restartable PV type change operations
  • bsc#1154461 - CVE-2019-18424: passed through PCI devices may corrupt host memory after deassignment
  • bsc#1155945 - CVE-2018-12207: Machine Check Error Avoidance on Page Size Change (aka IFU issue)
  • bsc#1152497 - CVE-2019-11135: TSX Asynchronous Abort (TAA) issue
Record
SUSE-SU-2020:14444-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
xen
Alpine:v3.10
 before 4.12.1-r1
4.12.1-r1
xen
Alpine:v3.11
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.12
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.13
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.14
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.15
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.16
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.17
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.18
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.19
 before 4.13.0-r0
4.13.0-r0
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Affected packages
PackageAffectedFixed
xen
Alpine:v3.20
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.21
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.22
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.23
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.24
 before 4.13.0-r0
4.13.0-r0
xen
Alpine:v3.8
 before 4.10.4-r1
4.10.4-r1
xen
Alpine:v3.9
 before 4.11.2-r1
4.11.2-r1
xen
Debian:12
 before 4.11.3+24-g14b62ab3e5-1
4.11.3+24-g14b62ab3e5-1
xen
Debian:13
 before 4.11.3+24-g14b62ab3e5-1
4.11.3+24-g14b62ab3e5-1
xen
Debian:14
 before 4.11.3+24-g14b62ab3e5-1
4.11.3+24-g14b62ab3e5-1
xen
Debian:9
From an advisory covering 17 CVEs
 before 4.8.5.final+shim4.10.4-1+deb9u12, plus listed versions
4.8.1-1+deb9u14.8.1-1+deb9u24.8.1-1+deb9u34.8.2+xsa245-0+deb9u14.8.3+comet2+shim4.10.0+comet3-1+deb9u4
Show 8 moreShow less
4.8.3+comet2+shim4.10.0+comet3-1+deb9u4.14.8.3+comet2+shim4.10.0+comet3-1+deb9u54.8.3+xsa262+shim4.10.0+comet3-1+deb9u64.8.3+xsa262+shim4.10.0+comet3-1+deb9u74.8.3+xsa267+shim4.10.1+xsa267-1+deb9u84.8.3+xsa267+shim4.10.1+xsa267-1+deb9u94.8.4+xsa273+shim4.10.1+xsa273-1+deb9u104.8.5+shim4.10.2+xsa282-1+deb9u11
4.8.5.final+shim4.10.4-1+deb9u12
xen
Debian:10
From an advisory covering 17 CVEs
 before 4.11.3+24-g14b62ab3e5-1~deb10u1, plus listed versions
4.11.1+92-g6c33308a8d-2
4.11.3+24-g14b62ab3e5-1~deb10u1
xen
Mageia:7
From an advisory covering 10 CVEs
 before 4.12.1-1.mga7
4.12.1-1.mga7
xen
SUSE:Linux Enterprise Module for Basesystem 15
From an advisory covering 6 CVEs
 before 4.10.4_06-3.25.1
4.10.4_06-3.25.1
xen
SUSE:Linux Enterprise Module for Server Applications 15
From an advisory covering 6 CVEs
 before 4.10.4_06-3.25.1
4.10.4_06-3.25.1
xen
SUSE:Linux Enterprise Module for Basesystem 15 SP1
From an advisory covering 8 CVEs
 before 4.12.1_04-3.6.1
4.12.1_04-3.6.1
xen
SUSE:Linux Enterprise Module for Server Applications 15 SP1
From an advisory covering 8 CVEs
 before 4.12.1_04-3.6.1
4.12.1_04-3.6.1
xen
SUSE:Linux Enterprise Desktop 12 SP4
From an advisory covering 6 CVEs
 before 4.11.2_04-2.17.1
4.11.2_04-2.17.1
xen
SUSE:Linux Enterprise Software Development Kit 12 SP4
From an advisory covering 6 CVEs
 before 4.11.2_04-2.17.1
4.11.2_04-2.17.1
xen
SUSE:Linux Enterprise Server 12 SP4
From an advisory covering 6 CVEs
 before 4.11.2_04-2.17.1
4.11.2_04-2.17.1
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 6 CVEs
 before 4.11.2_04-2.17.1
4.11.2_04-2.17.1
xen
SUSE:HPE Helion OpenStack 8
From an advisory covering 15 CVEs
 before 4.9.4_06-3.59.1
4.9.4_06-3.59.1
xen
SUSE:OpenStack Cloud 8
From an advisory covering 15 CVEs
 before 4.9.4_06-3.59.1
4.9.4_06-3.59.1
xen
SUSE:OpenStack Cloud Crowbar 8
From an advisory covering 15 CVEs
 before 4.9.4_06-3.59.1
4.9.4_06-3.59.1
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
From an advisory covering 15 CVEs
 before 4.9.4_06-3.59.1
4.9.4_06-3.59.1
xen
SUSE:Linux Enterprise Server 12 SP3-LTSS
From an advisory covering 15 CVEs
 before 4.9.4_06-3.59.1
4.9.4_06-3.59.1
xen
SUSE:Linux Enterprise Server 12 SP3-BCL
From an advisory covering 15 CVEs
 before 4.9.4_06-3.59.1
4.9.4_06-3.59.1
xen
SUSE:Enterprise Storage 5
From an advisory covering 15 CVEs
 before 4.9.4_06-3.59.1
4.9.4_06-3.59.1
xen
SUSE:Linux Enterprise Desktop 12 SP4
From an advisory covering 10 CVEs
 before 4.11.3_02-2.20.1
4.11.3_02-2.20.1
xen
SUSE:Linux Enterprise Software Development Kit 12 SP4
From an advisory covering 10 CVEs
 before 4.11.3_02-2.20.1
4.11.3_02-2.20.1
xen
SUSE:Linux Enterprise Server 12 SP4
From an advisory covering 10 CVEs
 before 4.11.3_02-2.20.1
4.11.3_02-2.20.1
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 10 CVEs
 before 4.11.3_02-2.20.1
4.11.3_02-2.20.1
xen
SUSE:OpenStack Cloud 7
From an advisory covering 13 CVEs
 before 4.7.6_06-43.59.1
4.7.6_06-43.59.1
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
From an advisory covering 13 CVEs
 before 4.7.6_06-43.59.1
4.7.6_06-43.59.1
xen
SUSE:Linux Enterprise Server 12 SP2-LTSS
From an advisory covering 13 CVEs
 before 4.7.6_06-43.59.1
4.7.6_06-43.59.1
xen
SUSE:Linux Enterprise Server 12 SP2-BCL
From an advisory covering 13 CVEs
 before 4.7.6_06-43.59.1
4.7.6_06-43.59.1
xen
SUSE:Linux Enterprise Server for SAP Applications 12 SP1
From an advisory covering 25 CVEs
 before 4.5.5_28-22.64.1
4.5.5_28-22.64.1
xen
SUSE:Linux Enterprise Server 12 SP1-LTSS
From an advisory covering 25 CVEs
 before 4.5.5_28-22.64.1
4.5.5_28-22.64.1
xen
SUSE:Linux Enterprise Server 11 SP4-LTSS
From an advisory covering 16 CVEs
 before 4.4.4_42-61.52.1
4.4.4_42-61.52.1
xen
Ubuntu:16.04:LTS
 All versions, plus listed versions
4.5.1-0ubuntu14.5.1-0ubuntu24.6.0-1ubuntu14.6.0-1ubuntu24.6.0-1ubuntu4
Show 7 moreShow less
4.6.0-1ubuntu4.14.6.0-1ubuntu4.24.6.0-1ubuntu4.34.6.5-0ubuntu14.6.5-0ubuntu1.14.6.5-0ubuntu1.24.6.5-0ubuntu1.4
 None known
xen
Ubuntu:18.04:LTS
 All versions, plus listed versions
4.9.0-0ubuntu34.9.0-0ubuntu44.9.2-0ubuntu1
 None known
xen
openSUSE:Leap 15.0
From an advisory covering 6 CVEs
 before 4.10.4_06-lp150.2.25.1
4.10.4_06-lp150.2.25.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-18424 is a medium vulnerability (CVSS 6.8) in Xen, published October 31, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.50%, the 42nd percentile. Fixed in xen 4.12.1-r1.

References

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