The remote Fedora host is missing a security update.
Update to Linux 18.104.22.168 (3.3.8). Disabled 32bit NX emulation. Suspected of being broken and it deviates from upstream. Unless there are further security issues, this will likely be the last F15 kernel update before End-of-Life. The 3.3.7 stable kernel contains a number of important bug fixes Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.