Download the iOS 11.2.5 Beta Right Now If...
If you receive a specific GitHub link through Apple's Messages app, your iPhone or iPad can lockup or respring. The Messages app will also become unusable.
You don't even have to click the link for things to get wonky which makes this issue pretty problematic for iPhone and iPad users.
Fortunately, the latest iOS 11.2.5 beta comes with a fix for the exploit.
If you've got horrible friends, or you're nervous about potentially receiving this link between now and next week, you might want to give the iOS 11.2.5 beta a go.