Add the house of Io attack #210
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House of Io has been described in this blog article.
It's an attack which bypasses the safe-linking by abusing the fact that pointers in the tcache management struct are not protected.
This attack only works in libc versions 2.29 - 2.33, as in those versions the key for a free'd tcache chunk is the pointer to the management struct. Afterwards the key is a random value.
As it was missing I thought of implementing the PoC.