CVE-2025-27465
Fixed in a distro release EPSS <1%CVSS 4.3
Certain instructions need intercepting and emulating by Xen. In some cases Xen emulates the instruction by replaying it, using an executable stub. Some instructions may raise an exception, which is supposed to be handled gracefully. Certain replayed instructions have additional logic to set up and recover the changes to the arithmetic flags. For replayed instructions where the flags recovery logic is used, the metadata for exception handling was incorrect, preventing Xen from handling the the exception gracefully, treating it as fatal instead.
Products: xen
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.19 | xen | 4.18.5-r1 |
| Alpine 3.20 | xen | 4.18.5-r1 |
| Alpine 3.21 | xen | 4.19.2-r2 |
| Alpine 3.22 | xen | 4.20.1-r0 |
| Alpine 3.23 | xen | 4.20.1-r0 |
| Alpine 3.24 | xen | 4.20.1-r0 |
| 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 Enterprise Storage 7.1 | xen | 4.14.6_26-150300.3.91.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | xen | 4.14.6_26-150300.3.91.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | xen | 4.16.7_02-150400.4.72.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | xen | 4.16.7_02-150400.4.72.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | xen | 4.17.5_10-150500.3.50.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | xen | 4.17.5_10-150500.3.50.1 |
| SUSE Linux Enterprise Micro 5.1 | xen | 4.14.6_26-150300.3.91.1 |
| SUSE Linux Enterprise Micro 5.2 | xen | 4.14.6_26-150300.3.91.1 |
| SUSE Linux Enterprise Micro 5.3 | xen | 4.16.7_02-150400.4.72.1 |
| SUSE Linux Enterprise Micro 5.4 | xen | 4.16.7_02-150400.4.72.1 |
| SUSE Linux Enterprise Micro 5.5 | xen | 4.17.5_10-150500.3.50.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | xen | 4.18.5_04-150600.3.28.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | xen | 4.20.1_02-150700.3.8.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | xen | 4.18.5_04-150600.3.28.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | xen | 4.20.1_02-150700.3.8.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | xen | 4.12.4_62-3.130.1 |
| SUSE Linux Enterprise Server 15 SP3-LTSS | xen | 4.14.6_26-150300.3.91.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | xen | 4.16.7_02-150400.4.72.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | xen | 4.17.5_10-150500.3.50.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | xen | 4.12.4_62-3.130.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | xen | 4.14.6_26-150300.3.91.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | xen | 4.16.7_02-150400.4.72.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | xen | 4.17.5_10-150500.3.50.1 |
| SUSE Manager Proxy 4.3 | xen | 4.16.7_02-150400.4.72.1 |
| SUSE Manager Server 4.3 | xen | 4.16.7_02-150400.4.72.1 |
| 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 15.6 | xen | 4.18.5_04-150600.3.28.1 |
| openSUSE Tumbleweed | xen | 4.20.1_02-1.1 |