[$] Unmaintained filesystems as a threat vector

One of the longstanding strengths of Linux, and a key to its early success,is its ability to interoperate with other systems. That interoperabilityincludes filesystems; Linux supports a wide range of filesystem types,allowing it to mount filesystems created by many other operating systems.Some of those filesystem implementations, though, are better maintainedthan others; developers at both the kernel and distribution levels arecurrently considering, again, how to minimize the security risks presentedby the others.