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modrobert writes: "Phire with the help of others over at has written an interesting analysis (mirror) of how the PSJailbreak exploit works. Here's a not so random quote from the post: 'The initial analysis by suggested that it was a Stack overflow attack. After further analysis it turns out that this exploit is a Heap Overflow attack. The exploit carefully manipulates the heap by plugging and unplugging fake usb devices with large device descriptors until the device on port 4 which misreports its size to overwrite one of malloc's boundary tags.'"