![]() ![]() Apple also added that since it would take a malicious app to set off Meltdown or Spectre, it recommends that iOS and Mac users install apps from a trusted source only, such as the App Store. The Meltdown and Spectre exploitation techniques abuse speculative execution to access privileged memory-including that of the kernel-from a less-privileged user process such as a malicious app running on a device."-AppleĪpple says that currently there are no known exploits that are impacting users at this time. If the prediction was wrong, this speculative execution is rolled back in a way that is intended to be invisible to software. To increase performance, the CPU predicts which path of a branch is most likely to be taken, and will speculatively continue execution down that path even before the branch is completed. To update your iPods operating system, follow these steps: Use the USB cable to connect your iPod to your computer. ![]() Speculative execution improves speed by operating on multiple instructions at once-possibly in a different order than when they entered the CPU. ![]() "The Meltdown and Spectre issues take advantage of a modern CPU performance feature called speculative execution. ![]()
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