I am on CentOS 6.4 32 bit and am trying to cause a buffer overflow in a program. Within GDB it works. Here is the output:

    [root@localhost bufferoverflow]# gdb stack
    GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6_4.1)
    Copyright (C) 2010 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later &lt;http://gnu.org/licenses/gpl.html&gt;
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.  Type &quot;show copying&quot;
    and &quot;show warranty&quot; for details.
    This GDB was configured as &quot;i686-redhat-linux-gnu&quot;.
    For bug reporting instructions, please see:
    &lt;http://www.gnu.org/software/gdb/bugs/&gt;...
    Reading symbols from /root/bufferoverflow/stack...done.
    (gdb) r
    Starting program: /root/bufferoverflow/stack
    process 6003 is executing new program: /bin/bash
    Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.107.el6_4.2.i686
    sh-4.1#

However when I run the program stack just on its own it seg faults. Why might this be?

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Buffer overflow works in gdb but not without it