CVE-2022-26356
Fixed in a distro release EPSS <1%
Racy interactions between dirty vram tracking and paging log dirty hypercalls Activation of log dirty mode done by XEN_DMOP_track_dirty_vram (was named HVMOP_track_dirty_vram before Xen 4.9) is racy with ongoing log dirty hypercalls. A suitably timed call to XEN_DMOP_track_dirty_vram can enable log dirty while another CPU is still in the process of tearing down the structures related to a previously enabled log dirty mode (XEN_DOMCTL_SHADOW_OP_OFF). This is due to lack of mutually exclusive locking between both operations and can lead to entries being added in already freed slots, resulting in a memory leak.
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-r2 |
| Alpine 3.15 | xen | 4.15.2-r2 |
| 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 | 4.16.1-1 |
| Debian 13 | xen | 4.16.1-1 |
| Debian 14 | xen | 4.16.1-1 |
| SUSE Enterprise Storage 6 | xen | 4.12.4_24-150100.3.72.1 |
| SUSE Enterprise Storage 7 | xen | 4.13.4_08-150200.3.50.1 |
| SUSE HPE Helion OpenStack 8 | xen | 4.9.4_28-3.103.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | xen | 4.12.4_24-150100.3.72.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | xen | 4.12.4_24-150100.3.72.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | xen | 4.13.4_08-150200.3.50.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | xen | 4.13.4_08-150200.3.50.1 |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | xen | 4.10.4_34-150000.3.74.1 |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | xen | 4.10.4_34-150000.3.74.1 |
| SUSE Linux Enterprise Micro 5.0 | xen | 4.13.4_08-150200.3.50.1 |
| SUSE Linux Enterprise Micro 5.1 | xen | 4.14.4_04-150300.3.24.1 |
| SUSE Linux Enterprise Micro 5.2 | xen | 4.14.4_04-150300.3.24.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | xen | 4.14.4_04-150300.3.24.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | xen | 4.14.4_04-150300.3.24.1 |
| SUSE Linux Enterprise Real Time 15 SP2 | xen | 4.13.4_08-150200.3.50.1 |
| SUSE Linux Enterprise Server 12 SP2-BCL | xen | 4.7.6_22-43.88.1 |
| SUSE Linux Enterprise Server 12 SP3-BCL | xen | 4.9.4_28-3.103.1 |
| SUSE Linux Enterprise Server 12 SP3-LTSS | xen | 4.9.4_28-3.103.1 |
| SUSE Linux Enterprise Server 12 SP4-LTSS | xen | 4.11.4_28-2.73.1 |
| SUSE Linux Enterprise Server 12 SP5 | xen | 4.12.4_22-3.66.1 |
| SUSE Linux Enterprise Server 15 SP1-BCL | xen | 4.12.4_24-150100.3.72.1 |
| SUSE Linux Enterprise Server 15 SP1-LTSS | xen | 4.12.4_24-150100.3.72.1 |
| SUSE Linux Enterprise Server 15 SP2-BCL | xen | 4.13.4_08-150200.3.50.1 |
| SUSE Linux Enterprise Server 15 SP2-LTSS | xen | 4.13.4_08-150200.3.50.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | 4.9.4_28-3.103.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | xen | 4.11.4_28-2.73.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | 4.12.4_22-3.66.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 | xen | 4.10.4_34-150000.3.74.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | xen | 4.12.4_24-150100.3.72.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | xen | 4.13.4_08-150200.3.50.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | 4.12.4_22-3.66.1 |
| SUSE Manager Proxy 4.1 | xen | 4.13.4_08-150200.3.50.1 |
| SUSE Manager Retail Branch Server 4.1 | xen | 4.13.4_08-150200.3.50.1 |
| SUSE Manager Server 4.1 | xen | 4.13.4_08-150200.3.50.1 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_28-3.103.1 |
| SUSE OpenStack Cloud 9 | xen | 4.11.4_28-2.73.1 |
| SUSE OpenStack Cloud Crowbar 8 | xen | 4.9.4_28-3.103.1 |
| SUSE OpenStack Cloud Crowbar 9 | xen | 4.11.4_28-2.73.1 |
| 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 | 4.14.4_04-150300.3.24.1 |
| openSUSE Tumbleweed | xen | 4.16.0_08-1.1 |