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CVE-2015-7970

Published: 30 October 2015

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.

Priority

Medium

Status

Package Release Status
xen
Launchpad, Ubuntu, Debian
xenial
Released (4.5.1-0ubuntu2)
upstream Needs triage

precise
Released (4.1.6.1-0ubuntu0.12.04.7)
trusty Does not exist
(trusty was released [4.4.2-0ubuntu0.14.04.3])
vivid
Released (4.5.0-1ubuntu4.3)
wily
Released (4.5.1-0ubuntu1.1)
Binaries built from this source package are in Universe and so are supported by the community.