Comment by OkayPhysicist
2 months ago
The GPL does not prohibit anyone from using a piece of software. It exclusively limits the actions of bad faith users. If all people engaged with FOSS in good faith, we wouldn't need licenses, because all most FOSS licenses require of the acceptors is to do a couple of small, free activities that any decent person would do anyway. Thank/give credit to the authors who so graciously allowed you to use their work, and if you make any fixes or improvements, share alike.
Security issues like this are a prime example of why all FOSS software should be at least LGPLed. If a security bug is found in FOSS library, who's the more motivated to fix it? The dude who hacked the thing together and gave it away, or the actual users? Requesting that those users share their fixes is farrr from unreasonable, given that they have clearly found great utility in the software.
GPL doesn't force people to share their fixes and improvements. And there is nothing bad faith about not sharing all your hardwork for free.
It does if you then share the resulting software. And I think if you make an improvement just for your own enjoyment, you'd be a better person if you shared it back than if you didn't.
A lot of software out there runs on servers and is never shared with users in a manner that matters for GPL.
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The GPL "does not prohibit anyone" in a narrow legalistic sense. In colloquial discussions (see e.g. https://www.gnu.org/licenses/why-not-lgpl.en.html), the Free Software Foundation is quite clear that the GPL exists to stop proprietary software developers from using your code by imposing conditions they can't satisfy.