Description
The p2m_pod_emergency_sweep function in arch/x86/mm/p2m-pod.c in Xen 3.4.x, 3.5.x, and 3.6.x is not preemptible, which allows local x86 HVM guest administrators to cause a denial of service (CPU consumption and possibly reboot) via crafted memory contents that triggers a "time-consuming linear scan," related to Populate-on-Demand.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://www.securityfocus.com/bid/77362 ↗
- http://support.citrix.com/article/CTX202404 ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html ↗
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html ↗
- http://www.securitytracker.com/id/1034034 ↗
- http://xenbits.xen.org/xsa/advisory-150.html ↗
- http://www.debian.org/security/2015/dsa-3414 ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html ↗
- https://security.gentoo.org/glsa/201604-03 ↗