Description
Xen 3.3.x through 4.5.x does not properly restrict access to PCI MSI mask bits, which allows local x86 HVM guest users to cause a denial of service (unexpected interrupt and host crash) via unspecified vectors.
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 | qemu | 1:2.3+dfsg-5 | — |
| Debian 14 | xen | 4.4.0-1 | — |
| Debian 13 | qemu | 1:2.3+dfsg-5 | — |
| Debian 13 | xen | 4.4.0-1 | — |
| Debian 12 | qemu | 1:2.3+dfsg-5 | — |
| Debian 12 | xen | 4.4.0-1 | — |
| Debian 8 | qemu | 1:2.1+dfsg-12+deb8u1 | DSA-3284-1 |
| Debian 8 | xen | 4.4.1-9+deb8u1 | DSA-3286-1 |
| Debian 7 | xen | 4.1.4-3+deb7u8 | DSA-3286-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.13 | USN-2630-1 |
| Ubuntu 14.04 LTS | xen | 4.4.2-0ubuntu0.14.04.2 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | xen | 4.4.2_06-21.1 | SUSE-SU-2015:1042-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | xen | 4.4.2_06-21.1 | SUSE-SU-2015:1042-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.7.0_12-1.3 | openSUSE-SU-2024:10196-1 |
Advisories 5
- DSA-3284-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3286-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2630-1 qemu, qemu-kvm vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2015:1042-1 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
- USN-2630-1 vendor-advisory
- https://support.citrix.com/article/CTX206006
- DSA-3286 vendor-advisory
- SUSE-SU-2015:1156 vendor-advisory
- 1032464 vdb-entry
- FEDORA-2015-9466 vendor-advisory
- DSA-3284 vendor-advisory
- SUSE-SU-2015:1157 vendor-advisory
- http://support.citrix.com/article/CTX201145
- SUSE-SU-2015:1045 vendor-advisory
- GLSA-201604-03 vendor-advisory
- 74950 vdb-entry
- http://xenbits.xen.org/xsa/advisory-129.html
- FEDORA-2015-9456 vendor-advisory
- SUSE-SU-2015:1042 vendor-advisory
- FEDORA-2015-9965 vendor-advisory