CWE-667 - Improper Locking
- Abstraction:Class
- Structure:Simple
- Status:Draft
- Release Date:2008-04-11
- Latest Modification Date:2023-06-29
Weakness Name
Improper Locking
Description
The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.
Locking is a type of synchronization behavior that ensures that multiple independently-operating processes or threads do not interfere with each other when accessing the same resource. All processes/threads are expected to follow the same steps for locking. If these steps are not followed precisely - or if no locking is done at all - then another process/thread could modify the shared resource in a way that is not visible or predictable to the original process. This can lead to data or memory corruption, denial of service, etc.
Common Consequences
Scope: Availability
Impact: DoS: Resource Consumption (CPU)
Notes: Inconsistent locking discipline can lead to deadlock.
