Description
Xen 4.0.2 through 4.0.4, 4.1.x, and 4.2.x allows local PV guest users to cause a denial of service (hypervisor crash) via certain bit combinations to the XSETBV instruction.
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 | 4.2.2-1 | — |
| Debian 13 | xen | 4.2.2-1 | — |
| Debian 12 | xen | 4.2.2-1 | — |
| Debian 7 | xen | 4.1.4-3+deb7u2 | DSA-3006-1 |
Advisories 1
- DSA-3006-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- 55082 third-party-advisory
- GLSA-201309-24 vendor-advisory
- [oss-security] 20130603 Xen Security Advisory 54 (CVE-2013-2078) - Hypervisor crash due to missing exception recovery on XSETBV mailing-list
- DSA-3006 vendor-advisory
- 1028613 vdb-entry