Description
Certain page table manipulation operations in Xen 4.1.x, 4.2.x, and earlier are not preemptible, which allows local PV kernels to cause a denial of service via vectors related to "deep page table traversal."
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 | 4.1.4-4 | — |
| Debian 13 | xen | 4.1.4-4 | — |
| Debian 12 | xen | 4.1.4-4 | — |
| Debian 7 | xen | 4.1.4-3+deb7u1 | DSA-2666-1 |
| Debian 6.0 | xen | 4.0.1-5.11 | DSA-2666-1 |
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-2666-1 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
- FEDORA-2013-7432 vendor-advisory
- GLSA-201309-24 vendor-advisory
- 53187 third-party-advisory
- DSA-2666 vendor-advisory
- SUSE-SU-2014:0446 vendor-advisory
- [oss-security] 20130502 Xen Security Advisory 45 (CVE-2013-1918) - Several long latency operations are not preemptible mailing-list
- 59615 vdb-entry