IIRC either the original Xbox or the Xbox 360 was sometimes modded/jailbroken by using a modified firmware for the internal DVD drive. Not exactly the same thing, but in the same vein.
I could definitely see it being easy to write bugs where verification code assumes that nominally read-only devices always return the same data for two subsequent reads of the same location, and then getting up to mischief by taking advantage of that assumption.
Comments
IIRC either the original Xbox or the Xbox 360 was sometimes modded/jailbroken by using a modified firmware for the internal DVD drive. Not exactly the same thing, but in the same vein.
I could definitely see it being easy to write bugs where verification code assumes that nominally read-only devices always return the same data for two subsequent reads of the same location, and then getting up to mischief by taking advantage of that assumption.