http://www.techradar.com/news/chip-flaw-hits-arm-architecture-too

Mobile users who thought they were unaffected by the Meltdown flaw affecting Intel chips are suddenly not quite so secure. A second flaw, dubbed Spectre, has been discovered – and this time it affects ARM processors, as well as Intel and AMD chips. This means that all mobile devices that use ARM architecture (and that’s pretty much all of them) are now in danger of attack.

More specifically, Cortex A8, A9, A15, A17, A57, A72, A73 and A75 processors are affected by one or more of the three exploits described.