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How To Patch and Protect Linux Server Against the Glibc GHOST Vulnerability # CVE-2015-0235

A very serious security problem has been found in the GNU C Library (Glibc) called GHOST. How can I fix GHOST vulnerability and protect my Linux server against the attack? How do I verify that my server has been fixed against the Glibc GHOST vulnerability?
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Linux Kernel Recompile: Do I Have To Recompile All Installed Applications

If I recompile just the Linux kernel, do I have to recompile the whole entire applications/other files in my systems?
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x86_64 Linux Error: gnu/stub-32.h Missing Error and Solution

I'm getting the following error while compiling application under CentOS / RHEL / Fedora Linux 64 bit edition:

/usr/include/gnu/stubs.h:7:27: error: gnu/stubs-32.h:

No such file or directory

How do I fix this error and compile my applications using gcc under RHEL / Fedora / CentOS Linux 64bit system?
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