Description
An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because small IOMMU mappings are unsafely combined into larger ones.
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 | 4.11.1-1 | — |
| Debian 13 | xen | 4.11.1-1 | — |
| Debian 12 | xen | 4.11.1-1 | — |
| Debian 9 | xen | 4.8.5+shim4.10.2+xsa282-1+deb9u11 | DSA-4369-1 |
| Debian 8 | xen | 4.4.4lts5-0+deb8u1 | DLA-1949-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | xen | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | xen | 4.10.2_04-3.9.1 | SUSE-SU-2018:4300-1 |
| SLES 12 SP4 | xen | 4.11.1_02-2.3.1 | SUSE-SU-2019:0003-1 |
| SLES 12 SP3 | xen | 4.9.3_03-3.47.1 | SUSE-SU-2018:4070-1 |
| SLES 12 SP2 | xen | 4.7.6_05-43.45.1 | SUSE-SU-2019:0020-1 |
| SLES 12 SP1 | xen | 4.5.5_28-22.58.1 | SUSE-SU-2019:0825-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | xen | 4.4.4_40-22.77.1 | SUSE-SU-2019:0827-1 |
| SLES 11 SP4 | xen | 4.4.4_38-61.40.1 | SUSE-SU-2019:13921-1 |
| SLES for SAP 12 SP4 | xen | 4.11.1_02-2.3.1 | SUSE-SU-2019:0003-1 |
| SLES for SAP 12 SP3 | xen | 4.9.3_03-3.47.1 | SUSE-SU-2018:4070-1 |
| SLES for SAP 12 SP2 | xen | 4.7.6_05-43.45.1 | SUSE-SU-2019:0020-1 |
| SLES for SAP 12 SP1 | xen | 4.5.5_28-22.58.1 | SUSE-SU-2019:0825-1 |
| SLES for SAP 11 SP4 | xen | 4.4.4_38-61.40.1 | SUSE-SU-2019:13921-1 |
| SUSE OpenStack Cloud 7 | xen | 4.7.6_05-43.45.1 | SUSE-SU-2019:0020-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | xen | 4.2.5_21-45.30.1 | SUSE-SU-2019:14011-1 |
| SUSE Enterprise Storage 4 | xen | 4.7.6_05-43.45.1 | SUSE-SU-2019:0020-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.11.1-r0 | — |
| Alpine v3.23 | xen | 4.11.1-r0 | — |
| Alpine v3.22 | xen | 4.11.1-r0 | — |
| Alpine v3.21 | xen | 4.11.1-r0 | — |
| Alpine v3.20 | xen | 4.11.1-r0 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.11.1-r0 | — |
| Alpine v3.18 | xen | 4.11.1-r0 | — |
| Alpine v3.17 | xen | 4.11.1-r0 | — |
| Alpine v3.16 | xen | 4.11.1-r0 | — |
| Alpine v3.15 | xen | 4.11.1-r0 | — |
| Alpine v3.14 | xen | 4.11.1-r0 | — |
| Alpine v3.13 | xen | 4.11.1-r0 | — |
| Alpine v3.12 | xen | 4.11.1-r0 | — |
| Alpine v3.11 | xen | 4.11.1-r0 | — |
| Alpine v3.10 | xen | 4.11.1-r0 | — |
| Alpine v3.9 | xen | 4.11.1-r0 | — |
| Alpine v3.8 | xen | 4.10.2-r1 | — |
| Alpine v3.7 | xen | 4.9.3-r1 | — |
| Alpine v3.6 | xen | 4.8.5-r0 | — |
Advisories 10
- DSA-4369-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1949-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:0003-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:14011-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:4070-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:13921-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:4300-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0825-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0827-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0020-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://support.citrix.com/article/CTX239432
- DSA-4369 vendor-advisory
- 106182 vdb-entry
- https://xenbits.xen.org/xsa/advisory-275.html
- FEDORA-2019-bce6498890 vendor-advisory
- openSUSE-SU-2019:1226 vendor-advisory
- [debian-lts-announce] 20191008 [SECURITY] [DLA 1949-1] xen security update mailing-list