CVE-2019-19583
Fixed in a distro release EPSS 2%
An issue was discovered in Xen through 4.12.x allowing x86 HVM/PVH guest OS users to cause a denial of service (guest OS crash) because VMX VMEntry checks mishandle a certain case. Please see XSA-260 for background on the MovSS shadow. Please see XSA-156 for background on the need for #DB interception. The VMX VMEntry checks do not like the exact combination of state which occurs when #DB in intercepted, Single Stepping is active, and blocked by STI/MovSS is active, despite this being a legitimate state to be in. The resulting VMEntry failure is fatal to the guest. HVM/PVH guest userspace code may be able to crash the guest, resulting in a guest Denial of Service. All versions of Xen are affected. Only systems supporting VMX hardware virtual extensions (Intel, Cyrix, or Zhaoxin CPUs) are affected. Arm and AMD systems are unaffected. Only HVM/PVH guests are affected. PV guests cannot leverage the vulnerability.
Products: xen, fedoraproject fedora, opensuse leap, debian_linux
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.10 | xen | 4.12.2-r0 |
| Alpine 3.11 | xen | 4.13.0-r0 |
| Alpine 3.12 | xen | 4.13.0-r0 |
| Alpine 3.13 | xen | 4.13.0-r0 |
| Alpine 3.14 | xen | 4.13.0-r0 |
| Alpine 3.15 | xen | 4.13.0-r0 |
| Alpine 3.16 | xen | 4.13.0-r0 |
| Alpine 3.17 | xen | 4.13.0-r0 |
| Alpine 3.18 | xen | 4.13.0-r0 |
| Alpine 3.19 | xen | 4.13.0-r0 |
| Alpine 3.20 | xen | 4.13.0-r0 |
| Alpine 3.21 | xen | 4.13.0-r0 |
| Alpine 3.22 | xen | 4.13.0-r0 |
| Alpine 3.23 | xen | 4.13.0-r0 |
| Alpine 3.24 | xen | 4.13.0-r0 |
| Alpine 3.8 | xen | 4.10.4-r2 |
| Alpine 3.9 | xen | 4.11.3-r1 |
| Debian 10 | xen | 4.11.3+24-g14b62ab3e5-1~deb10u1 |
| Debian 12 | xen | 4.11.3+24-g14b62ab3e5-1 |
| Debian 13 | xen | 4.11.3+24-g14b62ab3e5-1 |
| Debian 14 | xen | 4.11.3+24-g14b62ab3e5-1 |
| Debian 9 | xen | 4.8.5.final+shim4.10.4-1+deb9u12 |
| SUSE Enterprise Storage 5 | xen | 4.9.4_06-3.62.1 |
| SUSE Enterprise Storage 5 | xen | 4.9.4_06-3.59.1 |
| SUSE HPE Helion OpenStack 8 | xen | 4.9.4_06-3.62.1 |
| SUSE HPE Helion OpenStack 8 | xen | 4.9.4_06-3.59.1 |
| SUSE Linux Enterprise Desktop 12 SP4 | xen | 4.11.3_02-2.20.1 |
| SUSE Linux Enterprise Module for Basesystem 15 | xen | 4.10.4_08-3.28.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | xen | 4.12.1_06-3.9.1 |
| SUSE Linux Enterprise Module for Server Applications 15 | xen | 4.10.4_08-3.28.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | xen | 4.12.1_06-3.9.1 |
| SUSE Linux Enterprise Server 11 SP4-LTSS | xen | 4.4.4_42-61.52.1 |
| SUSE Linux Enterprise Server 12 SP1-LTSS | xen | 4.5.5_28-22.64.1 |
| SUSE Linux Enterprise Server 12 SP2-BCL | xen | 4.7.6_06-43.59.1 |
| SUSE Linux Enterprise Server 12 SP2-LTSS | xen | 4.7.6_06-43.59.1 |
| SUSE Linux Enterprise Server 12 SP3-BCL | xen | 4.9.4_06-3.62.1 |
| SUSE Linux Enterprise Server 12 SP3-BCL | xen | 4.9.4_06-3.59.1 |
| SUSE Linux Enterprise Server 12 SP3-LTSS | xen | 4.9.4_06-3.59.1 |
| SUSE Linux Enterprise Server 12 SP3-LTSS | xen | 4.9.4_06-3.62.1 |
| SUSE Linux Enterprise Server 12 SP4 | xen | 4.11.3_02-2.20.1 |
| SUSE Linux Enterprise Server 12 SP5 | xen | 4.12.1_10-3.8.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | xen | 4.5.5_28-22.64.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | xen | 4.7.6_06-43.59.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | 4.9.4_06-3.59.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | 4.9.4_06-3.62.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | xen | 4.11.3_02-2.20.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | 4.12.1_10-3.8.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP4 | xen | 4.11.3_02-2.20.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | 4.12.1_10-3.8.1 |
| SUSE OpenStack Cloud 7 | xen | 4.7.6_06-43.59.1 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_06-3.59.1 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_06-3.62.1 |
| SUSE OpenStack Cloud Crowbar 8 | xen | 4.9.4_06-3.59.1 |
| SUSE OpenStack Cloud Crowbar 8 | xen | 4.9.4_06-3.62.1 |
| Ubuntu 16.04 LTS | xen | no fix |
| Ubuntu 18.04 LTS | xen | no fix |
| openSUSE Leap 15.1 | xen | 4.12.1_06-lp151.2.9.1 |