Linux Segmentation Fault (core dumped) Fix

Fix "Segmentation fault (core dumped)" on Linux. The program accessed invalid memory. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: Error: Segmentation fault (core dumped). Category: Linux Command/Application Error. Program tried to access invalid memory. A core dump file may have been created. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Bug in the program (null pointer dereference). Buffer overflow in C/C++ code. Incompatible library version. Corrupted binary file. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Check if program is up to date: apt list --installed | grep program. Reinstall: sudo apt install --reinstall program-name. Debug with core dump: gdb program core. Check library dependencies: ldd /path/to/program. Run with Valgrind: valgrind ./program. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Linux Error Codes collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.