FreeBSD Security Advisory (FreeBSD-SA-05:08.kmem.asc)

The remote host is missing an update to the system as announced in the referenced advisory FreeBSD-SA-05:08.kmem.asc
Upgrade your system to the appropriate stable release or security branch dated after the correction date
In many parts of the FreeBSD kernel, names (of mount points, devices, files, etc.) are manipulated as NULL-terminated strings, but are provided to applications within fixed-length buffers. In several places, variable-length strings were copied into fixed-length buffers without zeroing the unused portion of the buffer.