Description
Xen through 4.6.x on 64-bit platforms mishandles a failsafe callback, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-215.
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 | 4.8.0~rc3-1 | — |
| Debian 13 | xen | 4.8.0~rc3-1 | — |
| Debian 12 | xen | 4.8.0~rc3-1 | — |
| Debian 8 | xen | 4.4.1-9+deb8u9 | DSA-3847-1 |
| Debian 7 | xen | 4.1.6.lts1-8 | DLA-964-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | xen | 4.6.5-0ubuntu1.1 | — |
| Ubuntu 14.04 LTS | xen | 4.4.2-0ubuntu0.14.04.11 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | xen | 4.5.5_12-22.18.1 | SUSE-SU-2017:1812-1 |
| SLES 12 | xen | 4.4.4_21-22.42.1 | SUSE-SU-2017:1795-1 |
| SLES 11 SP4 | xen | 4.4.4_20-60.3 | SUSE-SU-2017:1770-1 |
| SLES 11 SP3 | xen | 4.2.5_21-44.1 | SUSE-SU-2017:1715-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | xen | 4.5.5_12-22.18.1 | SUSE-SU-2017:1812-1 |
| SLES for SAP 12 | xen | 4.4.4_21-22.42.1 | SUSE-SU-2017:1795-1 |
| SLES for SAP 11 SP4 | xen | 4.4.4_20-60.3 | SUSE-SU-2017:1770-1 |
| SUSE OpenStack Cloud 6 | xen | 4.5.5_12-22.18.1 | SUSE-SU-2017:1812-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | xen | 4.2.5_21-44.1 | SUSE-SU-2017:1715-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.5 | xen | 4.7.2-r1 | — |
| Alpine v3.4 | xen | 4.6.3-r9 | — |
| Alpine v3.3 | xen | 4.6.3-r7 | — |
Advisories 6
- DLA-964-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3847-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:1795-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1715-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1770-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1812-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
References
- GLSA-201705-11 vendor-advisory
- 1038388 vdb-entry
- https://xenbits.xen.org/xsa/advisory-215.html
- 98436 vdb-entry
- https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/