Description
libxl in Xen 4.1.x through 4.6.x does not properly handle the readonly flag on disks when using the qemu-xen device model, which allows local guest users to write to a read-only disk image.
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+deb8u3 | DSA-3414-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | xen | 4.4.2-0ubuntu0.14.04.3 | — |
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_02-22.12.1 | SUSE-SU-2015:2328-1, SUSE-SU-2015:1908-1 |
| SLES 11 SP4 | xen | 4.4.3_02-26.2 | SUSE-SU-2015:2338-1, SUSE-SU-2015:1894-1 |
| SLES 11 SP3 | xen | 4.2.5_14-18.2 | SUSE-SU-2015:2326-1, SUSE-SU-2015:1853-1 |
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_02-22.12.1 | SUSE-SU-2015:2328-1, SUSE-SU-2015:1908-1 |
| SLES for SAP 11 SP4 | xen | 4.4.3_02-26.2 | SUSE-SU-2015:2338-1, SUSE-SU-2015:1894-1 |
| SLES for SAP 11 SP3 | xen | 4.2.5_14-18.2 | SUSE-SU-2015:2326-1, SUSE-SU-2015:1853-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.7.0_12-1.3 | openSUSE-SU-2024:10196-1 |
Advisories 9
- DSA-3414-1 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-2015:1894-1 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-2015:1853-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1908-1 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
- http://xenbits.xen.org/xsa/advisory-142.html
- openSUSE-SU-2015:2250 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1257893
- DSA-3414 vendor-advisory
- 1033633 vdb-entry
- 76823 vdb-entry
- FEDORA-2015-15944 vendor-advisory
- FEDORA-2015-15946 vendor-advisory
- GLSA-201604-03 vendor-advisory
- FEDORA-2015-15943 vendor-advisory