> The report notes that this security flaw is present in all the devices running chips between A7 and A11 Bionic. Apple has already fixed the exploit in A12 and A13 Bionic chips so newer devices are safe.

That's four generations of Apple hardware, the latest being iPhone X and iPhone 8/8 Plus (Sept 2017). The patch being fixed in A12 means the iPhone XR and iPhone XS (and later) are unaffected.