As you may aware of this, since Leap, open SUSE has moved its codebase to SUSE Linux Enterprise (SLE) to offer Enterprise level operating system as FREE, like Debian & Cent OS.
Open SUSE Leap 42.2 is based on SUSE Linux Enterprise (SLE) 12 with Service Pack (SP) 2.
Support for Microsoft Windows NT's NTFS file system has been developed and is now comparable with other native Unix file systems.
CDs, DVDs, and Blu-ray discs' ISO 9660 and Universal Disk Format (UDF) are supported.
open SUSE Project announced the release of the next minor version of Leap, open SUSE Leap 42.2 earlier today Nov 16, 2016.
These variants could be used not only to cross syscall boundary (variant 1 and variant 2) but also guest/host boundary (variant 2).
File systems have been developed by companies to meet their specific needs, by hobbyists, or adapted from Unix, Microsoft Windows, and other operating systems.
Linux has full support for XFS and JFS, FAT (the DOS file system), and HFS, the main file system for the Macintosh.
It allows an attacker to trick error-free programs, which follow best practices, into leaking their secrets.
In fact, the safety checks of said best practices actually increase the attack surface and may make applications more susceptible to Spectre.