useafterreturn
UseafterReturn is a class of memory safety bug where a program continues to use a memory region after the function that created or referenced that region has returned. It is related to, but distinct from, use-after-free: in UAR the problematic access concerns memory that may still be allocated but whose lifetime has ended with the function’s stack frame or temporary storage.
Commonly, a function may store a pointer to one of its local variables, a temporary buffer, or
The consequences of UseafterReturn can range from data corruption and crashes to more serious security risks.
Mitigation and detection rely on a combination of safer programming practices and protective technologies. Approaches include