* CVE-2018-18955 (https://launchpad.net/bugs/1801924) is addressed by
0009-userns-also-map-extents-in-the-reverse-map-to-kernel.patch
* https://launchpad.net/bugs/1789161 is addressed by the other 2 patches. (see
the link for a reproducer)
Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
