What is the situation when a low-priority process blocks the execution of a higher-priority process?

This situation is called priority inversion. It occurs when a low-priority process holds a resource (for example, a mutex) that is needed by a higher-priority process. As a result, the high-priority process is blocked and cannot continue until the low-priority process releases the resource.

To solve this problem, priority inheritance mechanisms are used, where the low-priority process temporarily inherits a higher priority level to release the resource more quickly.