Description
Xen 4.2.x, 4.1.x, and 4.0, when using Intel VT-d for PCI passthrough, does not properly configure VT-d when supporting a device that is behind a legacy PCI Bridge, which allows local guests to cause a denial of service to other guests by injecting an interrupt.
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 | 4.1.3-8 | — |
| Debian 13 | xen | 4.1.3-8 | — |
| Debian 12 | xen | 4.1.3-8 | — |
| Debian 6.0 | xen | 4.0.1-5.7 | DSA-2636-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.7.0_12-1.3 | openSUSE-SU-2024:10196-1 |
Advisories 2
- DSA-2636-1 xen - several Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10196-1 xen-4.7.0_12-1.3 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- 55082 third-party-advisory
- openSUSE-SU-2013:0637 vendor-advisory
- GLSA-201309-24 vendor-advisory
- DSA-2636 vendor-advisory
- [oss-security] 20130109 Xen Security Advisory 33 (CVE-2012-5634) - VT-d interrupt remapping source validation flaw mailing-list
- openSUSE-SU-2013:0912 vendor-advisory
- openSUSE-SU-2013:0636 vendor-advisory
- SUSE-SU-2014:0446 vendor-advisory