Integer overflow or wraparound in arithmetic calculation
ID |
c.integer_overflow.integer_wraparound |
Severity |
low |
Resource |
Integer Overflow |
Language |
C / C++ |
Description
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.
Rationale
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.
The following code illustrates a vulnerable pattern detected by this rule:
int num_imgs;
// ...
num_imgs = get_num_imgs();
// VULNERABLE: Integer overflow or wraparound in arithmetic calculation
table_ptr = (img_t *)malloc(sizeof(img_t) * num_imgs);
// ...
}Remediation
Follow secure coding practices and review the references below for detailed remediation guidance.