What actions lead to buffer overflow?

Buffer overflow occurs when more data is written to a buffer than it can hold. In Android (and in programming in general), this can happen if, for example, the length of input data is not checked when working with arrays or strings, leading to writing beyond the allocated array.

An example of a situation leading to buffer overflow:

• Copying a string into a fixed-size array without checking the length.
• Reading data from a network or file without size restrictions.

This can result in data corruption, application crashes, or security vulnerabilities (such as the ability to execute arbitrary code). Therefore, it is always important to check data sizes before writing to a buffer.