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>> Now, if that's correct, then this is in fact significant, because the baseband processor would not otherwise have such access to the filesystem (since it's n
by akiselev 13y ago
>> Now, if that's correct, then this is in fact significant, because the baseband processor would not otherwise have such access to the filesystem (since it's not, as I understand it, running in the kernel as a driver).
You'd think so... The baseband processor is actually integrated on the die of current gen SoCs from Qualcomm and plenty of the teardowns I've seen for high end phones use them. I haven't used these chips but everything I've read leads me to believe that there is a lot more integration between the radio and processor (that's the point)... and as a result, a larger attack surface.
- brianmwaters_hn 13y agoYes. Some further research I did since this thread started has shown that in some phones, even the microphone and camera are under the direct control of the baseband processor. In others, it's not. But in most phones, the CPU and BB share memory, which opens the door for the BB to do all sorts of nasty things to the OS on the CPU. https://www.youtube.com/watch?v=fQqv0v14KKY https://www.youtube.com/watch?v=fQqv0v14KKY