This is Samba 3.3.12 for AIX 6.1 and AIX 7.0.
You can download Samba 3.3.12 from the IBM site :
https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=aixbp

samba Version 3.3.12 : VRMF : 3.3.12.0

     	   ==============================
                   Release Notes for Samba 3.3.12
		            March 8, 2010
                   ==============================


This is a security release in order to address CVE-2010-0728.


o  CVE-2010-0728:
   In Samba releases 3.5.0, 3.4.6 and 3.3.11, new code
   was added to fix a problem with Linux asynchronous IO handling.
   This code introduced a bad security flaw on Linux platforms if the
   binaries were built on Linux platforms with libcap support.
   The flaw caused all smbd processes to inherit CAP_DAC_OVERRIDE
   capabilities, allowing all file system access to be allowed
   even when permissions should have denied access.


Changes since 3.3.11
--------------------


o   Jeremy Allison <jra@samba.org>
    * BUG 7222: Fix for CVE-2010-0728.


Files contained in samba.tar.Z :
1. samba.base
2. samba.license
3. samba.man.en_US


Steps for installation:
1. Copy samba.tar.Z in a Directory (say samba).
2. run  gunzip samba.tar.Z
3. run tar -xvf samba.tar
4. run smit install and install the 3 file sets