Description
The libxl toolstack library in Xen 4.1.x through 4.6.x does not properly release mappings of files used as kernels and initial ramdisks when managing multiple domains in the same process, which allows attackers to cause a denial of service (memory and disk consumption) by starting domains.
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+deb8u4 | DSA-3519-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | xen | 4.4.2-0ubuntu0.14.04.4 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | xen | 4.5.2_02-4.1 | SUSE-SU-2015:2324-1 |
| SLES 12 | xen | 4.4.3_06-22.15.1 | SUSE-SU-2015:2328-1 |
| SLES 11 SP4 | xen | 4.4.3_06-29.1 | SUSE-SU-2015:2338-1 |
| SLES 11 SP3 | xen | 4.2.5_18-21.1 | SUSE-SU-2015:2326-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | xen | 4.5.2_02-4.1 | SUSE-SU-2015:2324-1 |
| SLES for SAP 12 | xen | 4.4.3_06-22.15.1 | SUSE-SU-2015:2328-1 |
| SLES for SAP 11 SP4 | xen | 4.4.3_06-29.1 | SUSE-SU-2015:2338-1 |
| SLES for SAP 11 SP3 | xen | 4.2.5_18-21.1 | SUSE-SU-2015:2326-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.7.0_12-1.3 | openSUSE-SU-2024:10196-1 |
Advisories 6
- DSA-3519-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2015:2328-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2324-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2326-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2338-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10196-1 xen-4.7.0_12-1.3 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- DSA-3519 vendor-advisory
- http://xenbits.xen.org/xsa/advisory-160.html
- 1034389 vdb-entry
- GLSA-201604-03 vendor-advisory