xen-kernel -- arm: vgic: incorrect rate limiting of guest triggered logging

2015-01-29T00:00:00
ID 912CB7F7-27DF-11E5-A4A5-002590263BF5
Type freebsd
Reporter FreeBSD
Modified 2015-01-29T00:00:00

Description

The Xen Project reports:

On ARM systems the code which deals with virtualizing the GIC distributor would, under various circumstances, log messages on a guest accessible code path without appropriate rate limiting. A malicious guest could cause repeated logging to the hypervisor console, leading to a Denial of Service attack.