http://blog.cr0.org/2009/08/linux-null- ... ue-to.html
Here's the code to use it:
http://grsecurity.net/%7Espender/wunderbar_emporium.tgz
Run the wunderbar_emporium.sh in a shell. If it starts doing some funky colors after a few seconds, it works. If not, then you're secure.
Want to get it to run anyways, just for fun? Drop to a root terminal, and then type:
Code: Select all
echo 0 > /proc/sys/vm/mmap_min_addr
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./pwnkernel
To fix back to a secure system, go to the root terminal and type:
Code: Select all
echo 65536 > /proc/sys/vm/mmap_min_addr
I thought it was interesting. This affects all kernels for the last 8 years!