CVE-2025-58149
Fixed in a distro release EPSS <1%CVSS 7.5
When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have. As a result a domain can still have access any 64bit memory BAR when such device is no longer assigned to the domain. For PV domains the permission leak allows the domain itself to map the memory in the page-tables. For HVM it would require a compromised device model or stubdomain to map the leaked memory into the HVM domain p2m.
Products: xen
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.19 | xen | 4.18.5-r3 |
| Alpine 3.20 | xen | 4.18.5-r3 |
| Alpine 3.21 | xen | 4.19.3-r2 |
| Alpine 3.22 | xen | 4.20.1-r2 |
| Alpine 3.23 | xen | 4.20.1-r2 |
| Alpine 3.24 | xen | 4.20.1-r2 |
| Debian 12 | xen | 4.17.5+72-g01140da4e8-1 |
| Debian 13 | xen | 4.20.2+7-g1badcf5035-0+deb13u1 |
| Debian 14 | xen | 4.20.2+7-g1badcf5035-1 |
| SUSE Linux Enterprise Micro 5.2 | xen | 4.14.6_28-150300.3.94.1 |
| SUSE Linux Enterprise Micro 5.3 | xen | 4.16.7_06-150400.4.78.1 |
| SUSE Linux Enterprise Micro 5.4 | xen | 4.16.7_06-150400.4.78.1 |
| SUSE Linux Enterprise Micro 5.5 | xen | 4.17.6_02-150500.3.56.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | xen | 4.18.5_08-150600.3.34.2 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | xen | 4.20.2_02-150700.3.19.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | xen | 4.18.5_08-150600.3.34.2 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | xen | 4.20.2_02-150700.3.19.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | xen | 4.18.5_08-150600.3.34.2 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | xen | 4.12.4_64-3.137.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | xen | 4.18.5_08-150600.3.34.2 |
| 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 15.6 | xen | 4.18.5_08-150600.3.34.2 |
| openSUSE Tumbleweed | xen | 4.20.1_08-1.1 |