CVE-2015-8338
xen - security update
EPSS 0.20%
Description
Xen 4.6.x and earlier does not properly enforce limits on page order inputs for the (1) XENMEM_increase_reservation, (2) XENMEM_populate_physmap, (3) XENMEM_exchange, and possibly other HYPERVISOR_memory_op suboperations, which allows ARM guest OS administrators to cause a denial of service (CPU consumption, guest reboot, or watchdog timeout and host reboot) and possibly have unspecified other impact via unknown vectors.
How to fix CVE-2015-8338
To remediate CVE-2015-8338, upgrade the affected package to a fixed version below.
- Debian/xen—upgrade to 4.8.0~rc3-1 or later
- —upgrade to 4.4.1-9+deb8u6 or later
Is CVE-2015-8338 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.8.0~rc3-1
- from 0, < 4.4.1-9+deb8u6