can i use an open source software logo to create another Logo!

[QUARLEAP]

I have an urgent and necessary question ! can i use an open source software"logo" icon (Public domain)  to create another logo not for another software for something like a movement  page and non profit  to serve an cause , so Can I modify it reshape, "note  the same logo but it has some  main additions to serve the new idea of the page! (The idea of the movement is based on it )
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[Blighty]

You need to very carefully read all the copyright fine print associated with image.
eg free to use and/or modify for commercial use
free for personal use only
must credit the original author and provide link to original image
etc etc

[QUARLEAP]

(04-14-2018, 02:49 PM)Blighty Wrote: You need to very carefully read all the copyright fine print associated with image.
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 the problem is "it is not just an image it is a logo of software, and i am not going to use it in development !( to another filed) ! i just  revisited the licence page and notice that the logo licence contains 2 parts the icon and the text 
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the icon under {GPLv3}
This work is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or any later version. This work is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See version 3 of the GNU General Public License for more details.
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the text 
This file is ineligible for copyright and therefore in the public domain because it consists entirely of information that is common property and contains no original authorship.
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so  i am not sure even i think or it seems that  i may can ! but still need a sure answer .