Description
Certain PCI devices in a system might be assigned Reserved Memory
Regions (specified via Reserved Memory Region Reporting, "RMRR") for
Intel VT-d or Unity Mapping ranges for AMD-Vi. These are typically used
for platform tasks such as legacy USB emulation.
Since the precise purpose of these regions is unknown, once a device
associated with such a region is active, the mappings of these regions
need to remain continuouly accessible by the device. In the logic
establishing these mappings, error handling was flawed, resulting in
such mappings to potentially remain in place when they should have been
removed again. Respective guests would then gain access to memory
regions which they aren't supposed to have access to.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Xen | Xen | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | xen | 4.19.1-1 | — |
| Debian 13 | xen | 4.19.1-1 | — |
| Debian 12 | xen | 4.17.5+23-ga4e5191dc0-1 | DSA-5836-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | xen | No fix yet | — |
| Ubuntu 26.04 LTS | xen | No fix yet | — |
| Ubuntu 25.10 | xen | No fix yet | — |
| Ubuntu 24.04 LTS | xen | No fix yet | — |
| Ubuntu 22.04 LTS | xen | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | xen | No fix yet | — |
| Ubuntu 18.04 LTS | xen | No fix yet | — |
| Ubuntu 16.04 LTS | xen | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | xen | 4.18.3_02-150600.3.6.1 | SUSE-SU-2024:3113-1 |
| SLES 15 SP5 | xen | 4.17.5_02-150500.3.36.1 | SUSE-SU-2024:3075-1 |
| SLES 15 SP4 | xen | 4.16.6_04-150400.4.62.1 | SUSE-SU-2024:3423-1 |
| SLES 15 SP3 | xen | 4.14.6_18-150300.3.78.1 | SUSE-SU-2024:3001-1 |
| SLES 15 SP2 | xen | 4.13.5_14-150200.3.96.1 | SUSE-SU-2024:2994-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | xen | 4.12.4_52-3.115.1 | SUSE-SU-2024:3586-1, SUSE-SU-2024:3010-1 |
| SLES for SAP 15 SP4 | xen | 4.16.6_04-150400.4.62.1 | SUSE-SU-2024:3423-1 |
| SLES for SAP 15 SP3 | xen | 4.14.6_18-150300.3.78.1 | SUSE-SU-2024:3001-1 |
| SLES for SAP 15 SP2 | xen | 4.13.5_14-150200.3.96.1 | SUSE-SU-2024:2994-1 |
| SLES for SAP 12 SP5 | xen | 4.12.4_52-3.115.1 | SUSE-SU-2024:3586-1, SUSE-SU-2024:3010-1 |
| SLE Micro 5.5 | xen | 4.17.5_02-150500.3.36.1 | SUSE-SU-2024:3075-1 |
| SLE Micro 5.4 | xen | 4.16.6_04-150400.4.62.1 | SUSE-SU-2024:3423-1 |
| SLE Micro 5.3 | xen | 4.16.6_04-150400.4.62.1 | SUSE-SU-2024:3423-1 |
| SLE Micro 5.2 | xen | 4.14.6_18-150300.3.78.1 | SUSE-SU-2024:3001-1 |
| SLE Micro 5.1 | xen | 4.14.6_18-150300.3.78.1 | SUSE-SU-2024:3001-1 |
| SLE HPC 15 SP4 | xen | 4.16.6_04-150400.4.62.1 | SUSE-SU-2024:3423-1 |
| SLE HPC 15 SP3 | xen | 4.14.6_18-150300.3.78.1 | SUSE-SU-2024:3001-1 |
| SLE HPC 15 SP2 | xen | 4.13.5_14-150200.3.96.1 | SUSE-SU-2024:2994-1 |
| SUSE Manager Server 4.3 | xen | 4.16.6_04-150400.4.62.1 | SUSE-SU-2024:3423-1 |
| SUSE Manager Proxy 4.3 | xen | 4.16.6_04-150400.4.62.1 | SUSE-SU-2024:3423-1 |
| SUSE Enterprise Storage 7.1 | xen | 4.14.6_18-150300.3.78.1 | SUSE-SU-2024:3001-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.19.0_02-1.1 | openSUSE-SU-2024:14283-1 |
| openSUSE Leap 15.6 | xen | 4.18.3_02-150600.3.6.1 | SUSE-SU-2024:3113-1 |
| openSUSE Leap 15.5 | xen | 4.17.5_02-150500.3.36.1 | SUSE-SU-2024:3075-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.5 | xen | 4.17.5_02-150500.3.36.1 | SUSE-SU-2024:3075-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.19.0-r0 | — |
| Alpine v3.23 | xen | 4.19.0-r0 | — |
| Alpine v3.22 | xen | 4.19.0-r0 | — |
| Alpine v3.21 | xen | 4.19.0-r0 | — |
| Alpine v3.20 | xen | 4.18.3-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.18.3-r0 | — |
| Alpine v3.18 | xen | 4.17.5-r0 | — |
| Alpine v3.17 | xen | 4.16.6-r1 | — |
Advisories 10
- DSA-5836-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2024:3001-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3010-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2994-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14283-1 xen-4.19.0_02-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3113-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3586-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3075-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3423-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1861 Xen: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 26, 2024