CVE-2023-34322
Fixed in a distro release EPSS <1%CVSS 7.8
For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode. Since Xen itself needs to be mapped when PV guests run, Xen and shadowed PV guests run directly the respective shadow page tables. For 64-bit PV guests this means running on the shadow of the guest root page table. In the course of dealing with shortage of memory in the shadow pool associated with a domain, shadows of page tables may be torn down. This tearing down may include the shadow root page table that the CPU in question is presently running on. While a precaution exists to supposedly prevent the tearing down of the underlying live page table, the time window covered by that precaution isn't large enough.
Products: xen
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.15 | xen | 4.15.5-r1 |
| Alpine 3.16 | xen | 4.16.5-r1 |
| Alpine 3.17 | xen | 4.16.5-r1 |
| Alpine 3.18 | xen | 4.17.2-r1 |
| Alpine 3.19 | xen | 4.17.2-r1 |
| Alpine 3.20 | xen | 4.17.2-r1 |
| Alpine 3.21 | xen | 4.17.2-r1 |
| Alpine 3.22 | xen | 4.17.2-r1 |
| Alpine 3.23 | xen | 4.17.2-r1 |
| Alpine 3.24 | xen | 4.17.2-r1 |
| 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_04-150300.3.54.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | xen | 4.12.4_38-150100.3.92.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | xen | 4.13.5_04-150200.3.77.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | xen | 4.14.6_04-150300.3.54.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | xen | 4.14.6_04-150300.3.54.1 |
| SUSE Linux Enterprise Micro 5.1 | xen | 4.14.6_04-150300.3.54.1 |
| SUSE Linux Enterprise Micro 5.2 | xen | 4.14.6_04-150300.3.54.1 |
| SUSE Linux Enterprise Micro 5.3 | xen | 4.16.5_04-150400.4.34.1 |
| 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_04-150400.4.34.1 |
| 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 Module for Basesystem 15 SP4 | xen | 4.16.5_04-150400.4.34.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | xen | 4.16.5_08-150400.4.40.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | xen | 4.17.2_08-150500.3.15.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | xen | 4.17.2_04-150500.3.9.1 |
| 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_04-150400.4.34.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | xen | 4.17.2_04-150500.3.9.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | xen | 4.17.2_08-150500.3.15.1 |
| SUSE Linux Enterprise Server 12 SP5 | xen | 4.12.4_38-3.94.1 |
| SUSE Linux Enterprise Server 15 SP1-LTSS | xen | 4.12.4_38-150100.3.92.1 |
| SUSE Linux Enterprise Server 15 SP2-LTSS | xen | 4.13.5_04-150200.3.77.1 |
| SUSE Linux Enterprise Server 15 SP3-LTSS | xen | 4.14.6_04-150300.3.54.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | 4.12.4_38-3.94.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | xen | 4.12.4_38-150100.3.92.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | xen | 4.13.5_04-150200.3.77.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | xen | 4.14.6_04-150300.3.54.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | 4.12.4_38-3.94.1 |
| SUSE Manager Proxy 4.2 | xen | 4.14.6_04-150300.3.54.1 |
| SUSE Manager Server 4.2 | xen | 4.14.6_04-150300.3.54.1 |
| 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_04-150400.4.34.1 |
| openSUSE Leap 15.5 | xen | 4.17.2_04-150500.3.9.1 |
| 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 | 4.17.2_04-1.1 |