Description of problem:

Exec-Shield not found in Fedora 19, using sysctl -a |grep -i exec I can't see exec shield. SELinux enabled and a default installation of Fedora 19, can't stop a Stack Smashing.

If I compile this code:

#include <string.h>

int main(int ac, char **av)
{
        char buf[10];
        strcpy(buf, av[1]);
        return buf[5];
}

And run it with more than 10 chars, I obtain a segfault.
Theoretically exec-shield and SELinux and PAE kernel, stop it, but not.
Using a custom vanilla kernel + grsec I can stop this, and the execution stop with "killed", while in a Fedora 19 stock PAE kernel, no.
The box have a NX capable CPU with pae instruction.

Version-Release number of selected component (if applicable):

Fedora 19 xfce up to date.

How reproducible:
Always

Steps to Reproduce:
1.Install Fedora 19 with PAE kernel in a capable CPU
2.Compile the code mentioned and run it ./foo xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
3.A segfault is generated and a possible shellcode insertion. While PaX + grsecurity patch prevent it and kill it.

Actual results:

Fedora 19 is vulnerable to exploits that uses a bad programation in any software.

Expected results:

Add support to Fedora for stop Stack Smashing

Additional info:
CPU flags:

flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm ida dtherm tpr_shadow vnmi flexpriority