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Adjusted Double Free III<br />
• At this point: Application has Y and Z, both<br />
with equal address X<br />
• But used for different purposes, so…<br />
• Make ei<strong>the</strong>r Y or Z hold some important<br />
structure<br />
• And ensure <strong>the</strong> o<strong>the</strong>r is attacker controlled<br />
• Writing into this chunk changes important<br />
structure