cwe-191-integer-underflow

Remediate CWE-191 integer underflow vulnerabilities in Java code.

3|1|Updated Mar 6, 2026

Search Tags:#security #remediation #java #sast #cwe-191 #integer underflow

Ready to run

npx skills add https://github.com/DevelopersCoffee/java-cwe-security-skills --skill cwe-191-integer-underflow

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: cwe-191-integer-underflow
Source: https://github.com/DevelopersCoffee/java-cwe-security-skills/tree/main/cwe-191-integer-underflow
Command: npx skills add https://github.com/DevelopersCoffee/java-cwe-security-skills --skill cwe-191-integer-underflow

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the critical security vulnerability of Integer Underflow (CWE-191) in Java applications, preventing potential crashes or unexpected behavior.

Core Features & Use Cases

Vulnerability Identification: Detects patterns leading to integer underflow in Java code.
Secure Code Transformation: Provides deterministic fixes to mitigate the vulnerability.
Use Case: Automatically refactor Java code snippets that perform subtractions on integer variables to include checks or use Math.subtractExact to prevent underflow.

Quick Start

Use the cwe-191-integer-underflow skill to secure the provided Java code snippet against integer underflow.

Frequently Asked Questions about cwe-191-integer-underflow

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I fix integer underflow vulnerabilities in Java code?▼

To fix integer underflow in Java, apply input validation for arithmetic operations and use Math.subtractExact to enforce deterministic secure transformations on integer variables.

What is CWE-191 integer underflow and how does it impact Java applications?▼

CWE-191 integer underflow is a security vulnerability where arithmetic operations wrap around, causing potential crashes or unexpected behavior in Java applications.

How do I remediate SAST findings for integer underflow using Math.subtractExact?▼

Remediate SAST findings for integer underflow by refactoring Java code snippets to apply input validation checks and use Math.subtractExact for subtraction operations.

Does this integer underflow remediation work for all Java arithmetic operations?▼

This remediation specifically targets Java subtraction operations vulnerable to integer underflow, applying Math.subtractExact and requiring validation of input values for secure transformations.

Can I use Math.subtractExact to automatically refactor Java code against underflow?▼

Yes, you can automatically refactor Java code snippets that perform subtractions on integer variables to include checks or use Math.subtractExact to prevent underflow.