http://www.techradar.com/news/apple-says-all-macs-and-ios-devices-have-been-hit-by-meltdown-and-spectre

Apple has finally spoken out on the Meltdown and Spectre security scare which has dominated headlines this week, with the company confirming that all Mac computers and iOS devices are affected – but also that it has already patched macOS and iOS to defend the operating systems against Meltdown. Spectre, however, still looms large…

In a statement released on its support site, Apple said that these issues affected all modern processors and ‘nearly all computing devices’ out there, including all Mac machines and iOS phones and tablets as mentioned, although it added that there were no known exploits impacting users at this time.