Description
Multiple HVM control operations in Xen 3.4 through 4.2 allow local HVM guest OS administrators to cause a denial of service (physical CPU consumption) via a large input.
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 |
Advisories 1
- DSA-2636-1 xen - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- 55082 third-party-advisory
- [oss-security] 20121203 Xen Security Advisory 27 (CVE-2012-5511) - several HVM operations do not validate the range of their inputs mailing-list
- 56796 vdb-entry
- http://support.citrix.com/article/CTX135777
- GLSA-201309-24 vendor-advisory
- 51397 third-party-advisory
- 51486 third-party-advisory
- 51487 third-party-advisory
- 88129 vdb-entry
- SUSE-SU-2014:0446 vendor-advisory
- SUSE-SU-2012:1615 vendor-advisory
- xen-hvm-dos(80484) vdb-entry