CVE-2022-23033
Fixed in a distro release EPSS <1%
arm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn't have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes.
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 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 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 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 SP5 | xen | 4.12.4_18-3.58.2 |
| 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 |
| 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 |