CVE-2015-7970
EPSS 0.07%
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.
How to fix CVE-2015-7970
To remediate CVE-2015-7970, upgrade the affected package to a fixed version below.
- Debian/xen—upgrade to 4.6.0-1 or later
Is CVE-2015-7970 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.6.0-1