Buffer overflow is a type of memory corruption that can occur when a program writes more data to a buffer than the buffer can hold. This can lead to the program crashing, or it can allow an attacker to execute arbitrary code on the system. Buffer overflows are a serious security risk, and it is important to take steps to avoid them.
There are a number of different techniques that can be used to avoid buffer overflows. One common technique is to use boundary checking. Boundary checking involves checking the size of the data that is being written to a buffer before writing it. If the data is too large, the program can take steps to prevent the buffer overflow from occurring.