Is this actually a dangerous exploit or is it hype?
How would you actually use this flaw to access sensitive data.
Would you need access as admin or root to install something or is just getting someone to click on a hyperlink enough to compromise your system.
The article is completely silent in this area.
I used to disassemble asm code that I would find glaring flaws in...to this day I think many of the flaws were intentional as only a moron would have coded such a mess.
It used to be sort of a hobby for me, disassembling OS code. Most of the OS code was in C and after a while you could quickly discern the original C from the compiled asm.
Another thing, the code in smartphones is a hot mess! Mostly it is written to run on an ARM processor. The firmware in the software define radio chips can be altered to move the frequencies outside the cellular bands. You can modify a smartphone into a sat phone that can work with some assets in low orbit and some in geo orbit...generally you only have 600mw of output RF power but you would be shocked at how far that can travel line-of-sight.
The software defined radio chip in those cheap 30 dollar Chinese 2mtr/440 handie talkies is very modifiable...but you have to replace the original chip with one that you can burn new code into as the original was not modifiable, but the chips are cheap...less than 2$ I have considered trying to add the AM aviation band to one but the mod would be very involved and aviation talkies have come way down in price anyway.
Hype. The exploitation of the flaws requires hostile user mode code. There are claims being kicked around that the user mode code could include javascript but that is BS. Javascript was never able to accomplish rowhammer and won't accomplish this exploit either because it can't run arbitrary instructions.
However if you click on an exe, designed by a hacker, containing instructions to allow kernel memory to be read from user mode, then you are screwed. But you were screwed when you clicked on the exe because it can do plenty of damage in plain old user mode. So it doesn't really matter.