Description
When multiple devices share resources and one of them is to be passed
through to a guest, security of the entire system and of respective
guests individually cannot really be guaranteed without knowing
internals of any of the involved guests. Therefore such a configuration
cannot really be security-supported, yet making that explicit was so far
missing.
Resources the sharing of which is known to be problematic include, but
are not limited to
- - PCI Base Address Registers (BARs) of multiple devices mapping to the
same page (4k on x86),
- - INTx lines.
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 |
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