IANAL but I'm pretty sure the authors of software are liable for damages to property their software might cause. Regardless of whether that is the case, legislation should be enacted to ensure this and make complaints/remuneration standard and easy to extract without the costs of taking a huge company to court.
I don't know. Out of curiosity I went to framework website, found the software license for their BIOS firmware and it says "Software distributed under the License is distributed AS IS basis, without WARRANTY OF ANY KIND..."