CVE-2015-8338 Information

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.

Reference

http://www.debian.org/security/2016/dsa-3633 http://www.securityfocus.com/bid/78920 http://www.securitytracker.com/id/1034390 http://xenbits.xen.org/xsa/advisory-158.html