It’s also against the spirit of the GPL if not the letter. Red Hat isn’t just required to release source code to its customers upon request; that source code comes with GPL rights and restrictions attached (including the right to distribute).
Is it legal for Red Hat to require customers to waive their GPL rights? I don’t think it should be, but I don’t think courts are particularly friendly to copyleft holders.
It’s also against the spirit of the GPL if not the letter. Red Hat isn’t just required to release source code to its customers upon request; that source code comes with GPL rights and restrictions attached (including the right to distribute).
Is it legal for Red Hat to require customers to waive their GPL rights? I don’t think it should be, but I don’t think courts are particularly friendly to copyleft holders.