In the meantime I've copied the Leap version of the sudo package and added the upstream patch for this problem. The resulting package is available here: http://download.opensuse.org/repositories/home:/benjamin_poirier:/bug899252/openSUSE_Leap_42.1/ and I've tested that it solves the issue. Since sudo is safety-critical, I encourage you to check the source in the corresponding OBS project before installing the package. https://build.opensuse.org/package/revisions/home:benjamin_poirier:bug899252/sudo