CVE-2022-23034
Fixed in a distro release EPSS <1%
A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.
Products: xen
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.12 | xen | 4.13.4-r3 |
| Alpine 3.13 | xen | 4.14.5-r0 |
| Alpine 3.14 | xen | 4.15.2-r0 |
| Alpine 3.15 | xen | 4.15.2-r0 |
| Alpine 3.16 | xen | 4.16.1-r0 |
| Alpine 3.17 | xen | 4.16.1-r0 |
| Alpine 3.18 | xen | 4.16.1-r0 |
| Alpine 3.19 | xen | 4.16.1-r0 |
| Alpine 3.20 | xen | 4.16.1-r0 |
| Alpine 3.21 | xen | 4.16.1-r0 |
| Alpine 3.22 | xen | 4.16.1-r0 |
| Alpine 3.23 | xen | 4.16.1-r0 |
| Alpine 3.24 | xen | 4.16.1-r0 |
| Debian 11 | xen | 4.14.4+74-gd7b22226b5-1 |
| Debian 12 | xen | 4.16.0+51-g0941d6cb-1 |
| Debian 13 | xen | 4.16.0+51-g0941d6cb-1 |
| Debian 14 | xen | 4.16.0+51-g0941d6cb-1 |
| SUSE Enterprise Storage 6 | xen | 4.12.4_18-3.60.2 |
| SUSE Enterprise Storage 7 | xen | 4.13.4_04-3.43.2 |
| SUSE HPE Helion OpenStack 8 | xen | 4.9.4_26-3.100.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | xen | 4.12.4_18-3.60.2 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | xen | 4.12.4_18-3.60.2 |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | xen | 4.13.4_04-3.43.2 |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | xen | 4.13.4_04-3.43.2 |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | xen | 4.10.4_32-3.71.1 |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | xen | 4.10.4_32-3.71.1 |
| SUSE Linux Enterprise Micro 5.0 | xen | 4.13.4_04-3.43.2 |
| SUSE Linux Enterprise Micro 5.1 | xen | 4.14.3_06-150300.3.18.2 |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | xen | 4.14.3_06-150300.3.18.2 |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | xen | 4.14.3_06-150300.3.18.2 |
| SUSE Linux Enterprise Real Time 15 SP2 | xen | 4.13.4_04-3.43.2 |
| SUSE Linux Enterprise Server 11 SP4-LTSS | xen | 4.4.4_52-61.70.1 |
| SUSE Linux Enterprise Server 12 SP2-BCL | xen | 4.7.6_20-43.85.1 |
| SUSE Linux Enterprise Server 12 SP3-BCL | xen | 4.9.4_26-3.100.1 |
| SUSE Linux Enterprise Server 12 SP3-LTSS | xen | 4.9.4_26-3.100.1 |
| SUSE Linux Enterprise Server 12 SP4-LTSS | xen | 4.11.4_26-2.68.1 |
| SUSE Linux Enterprise Server 12 SP5 | xen | 4.12.4_18-3.58.2 |
| SUSE Linux Enterprise Server 15 SP1-BCL | xen | 4.12.4_18-3.60.2 |
| SUSE Linux Enterprise Server 15 SP1-LTSS | xen | 4.12.4_18-3.60.2 |
| SUSE Linux Enterprise Server 15 SP2-BCL | xen | 4.13.4_04-3.43.2 |
| SUSE Linux Enterprise Server 15 SP2-LTSS | xen | 4.13.4_04-3.43.2 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | 4.9.4_26-3.100.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | xen | 4.11.4_26-2.68.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | 4.12.4_18-3.58.2 |
| SUSE Linux Enterprise Server for SAP Applications 15 | xen | 4.10.4_32-3.71.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | xen | 4.12.4_18-3.60.2 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | xen | 4.13.4_04-3.43.2 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | 4.12.4_18-3.58.2 |
| SUSE Manager Proxy 4.1 | xen | 4.13.4_04-3.43.2 |
| SUSE Manager Retail Branch Server 4.1 | xen | 4.13.4_04-3.43.2 |
| SUSE Manager Server 4.1 | xen | 4.13.4_04-3.43.2 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_26-3.100.1 |
| SUSE OpenStack Cloud 9 | xen | 4.11.4_26-2.68.1 |
| SUSE OpenStack Cloud Crowbar 8 | xen | 4.9.4_26-3.100.1 |
| SUSE OpenStack Cloud Crowbar 9 | xen | 4.11.4_26-2.68.1 |
| 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 15.3 | xen | 4.14.3_06-150300.3.18.2 |
| openSUSE Tumbleweed | xen | 4.16.0_04-3.1 |