in reply to Licensing for Safety

The GPL includes a limited warranty and legiability clause. Or whatever the legal terms may be.

So distributing under that license should protect you.

Regrettably, I don't know how well the GPL stands in court. AFAIK there is no court ruling about this aspect of the GPL, so it's not 'tested' yet. But, it's clearly written by lawyers.

"We are not alone"(FZ)