CVE-2023-46839
Fixed in a distro release EPSS <1%CVSS 5.3
PCI devices can make use of a functionality called phantom functions, that when enabled allows the device to generate requests using the IDs of functions that are otherwise unpopulated. This allows a device to extend the number of outstanding requests. Such phantom functions need an IOMMU context setup, but failure to setup the context is not fatal when the device is assigned. Not failing device assignment when such failure happens can lead to the primary device being assigned to a guest, while some of the phantom functions are assigned to a different domain.
Products: xen
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.16 | xen | 4.16.5-r6 |
| Alpine 3.17 | xen | 4.16.5-r6 |
| Alpine 3.18 | xen | 4.17.3-r0 |
| Alpine 3.19 | xen | 4.18.0-r3 |
| Alpine 3.20 | xen | 4.18.0-r3 |
| Alpine 3.21 | xen | 4.18.0-r3 |
| Alpine 3.22 | xen | 4.18.0-r3 |
| Alpine 3.23 | xen | 4.18.0-r3 |
| Alpine 3.24 | xen | 4.18.0-r3 |
| Debian 12 | xen | 4.17.3+10-g091466ba55-1~deb12u1 |
| Debian 13 | xen | 4.17.3+10-g091466ba55-1 |
| Debian 14 | xen | 4.17.3+10-g091466ba55-1 |
| SUSE Enterprise Storage 7.1 | xen | 4.14.6_10-150300.3.63.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | xen | 4.12.4_44-150100.3.101.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | xen | 4.13.5_10-150200.3.86.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | xen | 4.14.6_10-150300.3.63.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | xen | 4.16.5_12-150400.4.46.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | xen | 4.16.5_12-150400.4.46.1 |
| SUSE Linux Enterprise Micro 5.1 | xen | 4.14.6_10-150300.3.63.1 |
| SUSE Linux Enterprise Micro 5.2 | xen | 4.14.6_10-150300.3.63.1 |
| SUSE Linux Enterprise Micro 5.3 | xen | 4.16.5_12-150400.4.46.1 |
| SUSE Linux Enterprise Micro 5.4 | xen | 4.16.5_12-150400.4.46.1 |
| SUSE Linux Enterprise Micro 5.5 | xen | 4.17.3_06-150500.3.24.1 |
| SUSE Linux Enterprise Micro 5.5 | xen | 4.17.3_04-150500.3.21.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | xen | 4.17.3_06-150500.3.24.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | xen | 4.17.3_04-150500.3.21.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | xen | 4.17.3_06-150500.3.24.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | xen | 4.17.3_04-150500.3.21.1 |
| SUSE Linux Enterprise Server 12 SP5 | xen | 4.12.4_44-3.103.1 |
| SUSE Linux Enterprise Server 15 SP1-LTSS | xen | 4.12.4_44-150100.3.101.1 |
| SUSE Linux Enterprise Server 15 SP2-LTSS | xen | 4.13.5_10-150200.3.86.1 |
| SUSE Linux Enterprise Server 15 SP3-LTSS | xen | 4.14.6_10-150300.3.63.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | xen | 4.16.5_12-150400.4.46.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | 4.12.4_44-3.103.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | xen | 4.12.4_44-150100.3.101.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | xen | 4.13.5_10-150200.3.86.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | xen | 4.14.6_10-150300.3.63.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | xen | 4.16.5_12-150400.4.46.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | 4.12.4_44-3.103.1 |
| SUSE Manager Proxy 4.3 | xen | 4.16.5_12-150400.4.46.1 |
| SUSE Manager Server 4.3 | xen | 4.16.5_12-150400.4.46.1 |
| 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 15.5 | xen | 4.17.3_06-150500.3.24.1 |
| openSUSE Leap 15.5 | xen | 4.17.3_04-150500.3.21.1 |
| openSUSE Leap Micro 5.3 | xen | 4.16.5_12-150400.4.46.1 |
| openSUSE Leap Micro 5.4 | xen | 4.16.5_12-150400.4.46.1 |
| openSUSE Tumbleweed | xen | 4.18.0_06-1.1 |