The remote host is missing an update to kfreebsd-8 announced via advisory DSA 2325-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202325-1

Buffer overflow in the linux emulation support in FreeBSD kernel allows local users to cause a denial of service (panic) and possibly execute arbitrary code by calling the bind system call with a long path for a UNIX-domain socket, which is not properly handled when the address is used by other unspecified system calls. For the stable distribution (squeeze), this problem has been fixed in version 8.1+dfsg-8+squeeze2. For the unstable distribution (sid), this problem has been fixed in version 8.2-9. We recommend that you upgrade your kfreebsd-8 packages.