Multiple ChoiceHard 30s
TOCTOU Race
A time-of-check-to-time-of-use (TOCTOU) flaw occurs when:
Options
- 1Two threads incrementing a shared counter without any locking at all
- 2A file that once lacked read permission on the system for the user
- 3An integer overflow in the length field of a buffer during a copy
- 4State changes between the permission check and the privileged action
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