resource leak

This is what Microsoft calls a resource leak or memory leak.

Details all performance issues, memory leaks and resource leaks within source code.

Typical resource leaks include memory leak and handle leak.

Resource leaks, e.g. due to forgetting to close a file handler.

Handle leaks, like memory leaks, are specific instances of resource leaks.

A situation when a computer program allocates a resource and fails to deallocate it after use is called a resource leak.

In computer science, a resource leak is a particular type of resource consumption by a computer program where the program cannot release resources it has acquired.

But thankfully all Windows versions for the last decade have cleaned up the so-called "resource leaks" when the application terminates and freed up anything, any resources that they had allocated.

RAII is vital in writing exception-safe C++ code: to release resources before permitting exceptions to propagate (in order to avoid resource leaks) one can write appropriate destructors once rather than dispersing and duplicating cleanup logic between exception handling blocks that may or may not be executed.

Per the video, the root cause of the October outage was not identified until the evening of October 8, 2008 and is described as an NFS lock resource leak attributed to a bug introduced in the 2.6.20 Linux kernel that Tucows was using to connect to their NetApp mail stores.