Description
Certain MMU virtualization operations in Xen 4.2.x through 4.4.x before the xsa97-hap patch, when using Hardware Assisted Paging (HAP), are not preemptible, which allows local HVM guest to cause a denial of service (vcpu consumption) by invoking these operations, which process every page assigned to a guest, a different vulnerability than CVE-2014-5149.
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 | 4.4.1-4 | — |
| Debian 13 | xen | 4.4.1-4 | — |
| Debian 12 | xen | 4.4.1-4 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.7.0_12-1.3 | openSUSE-SU-2024:10196-1 |
Advisories 1
- openSUSE-SU-2024:10196-1 xen-4.7.0_12-1.3 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- GLSA-201504-04 vendor-advisory
- http://xenbits.xen.org/xsa/advisory-97.html
- 69198 vdb-entry
- FEDORA-2014-9472 vendor-advisory
- 1030723 vdb-entry
- xen-cve20145146-dos(95234) vdb-entry
- FEDORA-2014-9493 vendor-advisory
- openSUSE-SU-2015:0226 vendor-advisory
- openSUSE-SU-2015:0256 vendor-advisory