The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
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.
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions up to 4.6.0 (inclusive)
|92614||Debian DSA-3633-1 : xen - security update (Bunker Buster)||Nessus||Debian Local Security Checks|
|89151||Fedora 23 : xen-4.5.2-5.fc23 (2015-12a089920e)||Nessus||Fedora Local Security Checks|
|89135||Fedora 22 : xen-4.5.2-5.fc22 (2015-08e4af5a20)||Nessus||Fedora Local Security Checks|