If you look at the majority of consumer software, be it open source or proprietary, you will notice that its license terms always explicitly disclaim all liabil

If you look at the majority of consumer software, be it open source or proprietary, you will notice that its license terms always explicitly disclaim all liabilities and warranties of fitness for a particular purpose. Using the software creates a legal agreement to not sue regardless of how buggy the software is. Software development contracts between businesses usually have different terms, so there might be grounds for suit depending on the contract in question. For the typical individual user, they are unlikely to have any legal recourse regardless of how badly software behaves. About the only exception I can think of right now is the infamous "Sony rootkit", but in that case, the major issue was exactly that the software was installed regardless of the user agreeing to the license and that its nature as being independent of the music content purchased was not disclosed.