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I'm not an expert in linux but when I upgrade my kernel to latest stable one which is 3.12.2, does it close all security bugs?

How linux security bugs be closed? by installing newer kernel or how ??and who closes these bugs?

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  • No software will ever be bugfree/free of security issues.
  • A new Kernel will only fix the known security issues of the previous release (given that there was somebody willing to fix them)
  • Security issues of individual applications need to be fixed in the applications itself
  • No software security can ever provide full security, it always comes down to how the sysadmin/user configured and uses his system

The changelog for the Kernel release 3.12.2 lists all changes (new features, fixes, …) of the given release.

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