Ubuntu Security Notice USN-151-4 - USN-148-1 and USN-151-1 fixed two security flaws in zlib, which could be exploited to cause Denial of Service attacks or even arbitrary code execution with malicious data streams. Since lsb-rpm is statically linked against the zlib library, it is also affected by these issues. The updated packages have been rebuilt against the fixed zlib.
1b544a04d39a8e0c1931a5d95ffca15fa1c6e2f736889f0d0e654b9062a98680