CVE-2023-34327
Fixed in a distro release EPSS <1%CVSS 5.5
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] AMD CPUs since ~2014 have extensions to normal x86 debugging functionality. Xen supports guests using these extensions. Unfortunately there are errors in Xen's handling of the guest state, leading to denials of service. 1) CVE-2023-34327 - An HVM vCPU can end up operating in the context of a previous vCPUs debug mask state. 2) CVE-2023-34328 - A PV vCPU can place a breakpoint over the live GDT. This allows the PV vCPU to exploit XSA-156 / CVE-2015-8104 and lock up the CPU entirely.
Products: xen
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.15 | xen | 4.15.5-r3 |
| Alpine 3.16 | xen | 4.16.5-r3 |
| Alpine 3.17 | xen | 4.16.5-r3 |
| Alpine 3.18 | xen | 4.17.2-r3 |
| Alpine 3.19 | xen | 4.17.2-r3 |
| Alpine 3.20 | xen | 4.17.2-r3 |
| Alpine 3.21 | xen | 4.17.2-r3 |
| Alpine 3.22 | xen | 4.17.2-r3 |
| Alpine 3.23 | xen | 4.17.2-r3 |
| Alpine 3.24 | xen | 4.17.2-r3 |
| Debian 12 | xen | 4.17.2+76-ge1f9cb16e2-1~deb12u1 |
| Debian 13 | xen | 4.17.2+55-g0b56bed864-1 |
| Debian 14 | xen | 4.17.2+55-g0b56bed864-1 |
| SUSE Enterprise Storage 7.1 | xen | 4.14.6_06-150300.3.57.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | xen | 4.12.4_40-150100.3.95.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | xen | 4.13.5_06-150200.3.80.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | xen | 4.14.6_06-150300.3.57.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | xen | 4.14.6_06-150300.3.57.1 |
| SUSE Linux Enterprise Micro 5.1 | xen | 4.14.6_06-150300.3.57.1 |
| SUSE Linux Enterprise Micro 5.2 | xen | 4.14.6_06-150300.3.57.1 |
| SUSE Linux Enterprise Micro 5.3 | xen | 4.16.5_06-150400.4.37.1 |
| SUSE Linux Enterprise Micro 5.3 | xen | 4.16.5_08-150400.4.40.1 |
| SUSE Linux Enterprise Micro 5.4 | xen | 4.16.5_06-150400.4.37.1 |
| SUSE Linux Enterprise Micro 5.4 | xen | 4.16.5_08-150400.4.40.1 |
| SUSE Linux Enterprise Micro 5.5 | xen | 4.17.2_08-150500.3.15.1 |
| SUSE Linux Enterprise Micro 5.5 | xen | 4.17.2_06-150500.3.12.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | xen | 4.16.5_08-150400.4.40.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | xen | 4.16.5_06-150400.4.37.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | xen | 4.17.2_06-150500.3.12.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | xen | 4.17.2_08-150500.3.15.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | xen | 4.16.5_08-150400.4.40.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | xen | 4.16.5_06-150400.4.37.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | xen | 4.17.2_08-150500.3.15.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | xen | 4.17.2_06-150500.3.12.1 |
| SUSE Linux Enterprise Server 12 SP5 | xen | 4.12.4_40-3.97.1 |
| SUSE Linux Enterprise Server 15 SP1-LTSS | xen | 4.12.4_40-150100.3.95.1 |
| SUSE Linux Enterprise Server 15 SP2-LTSS | xen | 4.13.5_06-150200.3.80.1 |
| SUSE Linux Enterprise Server 15 SP3-LTSS | xen | 4.14.6_06-150300.3.57.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | 4.12.4_40-3.97.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | xen | 4.12.4_40-150100.3.95.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | xen | 4.13.5_06-150200.3.80.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | xen | 4.14.6_06-150300.3.57.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | 4.12.4_40-3.97.1 |
| SUSE Manager Proxy 4.2 | xen | 4.14.6_06-150300.3.57.1 |
| SUSE Manager Server 4.2 | xen | 4.14.6_06-150300.3.57.1 |
| Ubuntu 16.04 LTS | xen | no fix |
| Ubuntu 18.04 LTS | xen | no fix |
| Ubuntu 20.04 LTS | xen | no fix |
| Ubuntu 22.04 LTS | xen | no fix |
| Ubuntu 24.04 LTS | xen | no fix |
| Ubuntu 25.10 | xen | no fix |
| Ubuntu 26.04 LTS | xen | no fix |
| Ubuntu 26.10 | xen | no fix |
| openSUSE Leap 15.4 | xen | 4.16.5_08-150400.4.40.1 |
| openSUSE Leap 15.4 | xen | 4.16.5_06-150400.4.37.1 |
| openSUSE Leap 15.5 | xen | 4.17.2_06-150500.3.12.1 |
| openSUSE Leap 15.5 | xen | 4.17.2_08-150500.3.15.1 |
| openSUSE Leap Micro 5.3 | xen | 4.16.5_08-150400.4.40.1 |
| openSUSE Leap Micro 5.4 | xen | 4.16.5_08-150400.4.40.1 |
| openSUSE Tumbleweed | xen | 4.18.0_02-1.1 |