FreeBSD Security Advisory (FreeBSD-SA-03:17.procfs.asc)

The remote host is missing an update to the system as announced in the referenced advisory FreeBSD-SA-03:17.procfs.asc

The process file system, procfs(5), implements a view of the system process table inside the file system. It is normally mounted on /proc, and is required for the complete operation of programs such as ps(1) and w(1). The Linux process file system, linprocfs(5), emulates a subset of Linux's process file system and is required for the complete operation of some Linux binaries. The procfs and linprocfs implementations use uiomove(9) and the related `struct uio' in order to fulfill read and write requests. Several cases were identified where members of `struct uio' were not properly validated before being used. In particular, the `uio_offset' member may be negative or extremely large, and was used to compute the region of kernel memory to be returned to the user.

Upgrade your system to the appropriate stable release or security branch dated after the correction date https://secure1.securityspace.com/smysecure/catid.html?in=FreeBSD-SA-03:17.procfs.asc