Linux is more secure The core gets a proper overhaul.

New Linux core, version 2.6.1936, it was announced Wednesday by Linus Torvalds, and the news yesterday, among other things, better security and better driver support and the developers should have done this without the core has been much greater. To take advantage of these changes, users must download a current Linux distribution, such as Ubuntu, but it will take time before this patch is in place.

Linux core version 26.36
This is some of the new features in version 2.6.36:

• AppArmor Security System, which has been part of Ubuntu for a long time, is now part of the Linux core
• The new core supports the so-called tiler chip architecture that will be able to scale the number of cores in the same chip.
• Better algorithm to improve memory management. 
• Enhanced IPS driver should result in better power sharing between the CPU and GPU, especially on Intel Core i3 and i5 systems.
• Better performance for virtual machines. 
• Better support for Radeon and Fermi-graphics chips.

Security holes in Linux core
should be discovered a serious security hole in Linux core, a hole that can attack the super-user privileges. The hole should be in the Linux implementation of Reliable Datagram Sockets (RDS) protocol, and will affect the Linux core version 2.6.1930. The hole has already been discovered and demonstrated (with a "proof-of-concept code) in Ubuntu 10.04 (64-bit). Users are encouraged to download and install the latest version of its Linux distributions. Read the details on vsecurity.com.