Well, if there is a limit to the size of numbers in computers, what happens when we cross this limit? This can be also calculated by 2³² - 1, which is all possible combinations of 0’s and 1’s of length 32, minus 1 because computers start counting from 0.
0xFFFFFFFF (decimal 4294967295) - is the maximum value of unsigned int. 0x00000000 (decimal 0) - is the minimum value of unsigned int. Thus, we can deduce that in such languages: 0x0000000F (Binary: b00…001111) - is a binary/hex representation of the decimal value 15. An int type declares that the maximum value length that can be stored in a specific slot is 4 Bytes or 32 bits (each Byte consists of 8 bits). In languages like C and Java, these can be represented by multiple types for numbers like ‘int’, ‘short’, ‘double’, etc. In many programming languages, every storage slot has a type that defines what kind of information is stored within it, and what the maximum capacity of the specific slot is. Sometimes, these values are represented in hexadecimal, which is a 16-based number system, with a ‘0x’ prefix. In addition, computers don’t understand human languages, so the data is represented in binary, a 2-based number system, which consists of 0’s and 1’s. There is an infinite amount of numbers between -∞ and ∞, but our computers have a finite capacity of storage, so there is a limit on how large or small numbers we can store. 
This article will focus on integer overflow, although other overflows (like buffer overflow) exist. Modern computers store data from different types like numbers, text, etc. Enjoys collecting Pokémon cards and bobble-heads of rappers Specializes in Machine Learning and Big Data, and is extremely passionate about Cybersecurity, Blockchain and Algo-trading.
#Integer overflow vs buffer overflow software#
Has an MSc in Information and Software Systems and Engineering from Ben-Gurion University. Mark Yosef - Security Researcher and Data Scientist at Valid Network.
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