this post was submitted on 28 Jan 2025
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I need a bigger nerd than me to explain how much Apple users need to worry about this.
Very. It's unpatchable. It's taking advantage of a speculative execution flaw, which is baked into the CPU microcode. This is the Apple M-chip version of Spectre/Meltdown that happened on x86 CPUs a few years ago.
The best Apple can do is attempt to add some code to the OS to help prevent this issue, but if Spectre was any example, it'll cause a hit to the CPU performance.
So this'll likely be mitigated soon, and while you're probably right about the performance hit (which will likely be minor), I don't think (most) Apple users need to be very worried about this.
Oh, yet another speculative execution flaw...