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Table 1 Operation type error: the type of error generated by different types of operations accessing different memory states

From: Memory access integrity: detecting fine-grained memory access errors in binary code

Type    
State Uninit Used Free
read unintialized-read - read use-after-free
write - - write use-after-free
deallocation - - double-free
allocation chunk overlap chunk overlap -
  1. ‘-’ indicates legal access