The CVE-2015-1805 exploit code is derived from:

  mobilelinux/iovy_root_research, commit f945796
  https://github.com/mobilelinux/iovy_root_research

That project states that it was inspired by:

  dosomder/iovyroot
  https://github.com/dosomder/iovyroot

The imported source files retain their original copyright and license
notices. Device-specific modifications, the installer, the minimal su
wrapper, documentation, and build scripts are distributed under GPL-3.0.