The remote host is missing an update as announced via advisory SSA:2004-049-01.
New kernels are available for Slackware 9.1 and -current to fix a bounds-checking problem in the kernel's mremap() call which could be used by a local attacker to gain root privileges. Please note that this is not the same issue as CVE-2003-0985 which was fixed in early January. The kernels in Slackware 8.1 and 9.0 that were updated in January are not vulnerable to this new issue because the patch from Solar Designer that was used to fix the CVE-2003-0985 bugs also happened to fix the problem that was discovered later. Sites running Slackware 9.1 or -current should upgrade to a new kernel. After installing the new kernel, be sure to run 'lilo'. More details about this issue may be found in the Common Vulnerabilities and Exposures (CVE) database: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0077