Patching the kernel

These instructions require having the skills of a sysadmin. Personally, I avoid recompiling any kernel unless absolutely necessary.

Make sure your product is affected

Linux and UNIX source software often comes with security and other patches. You can download them from Internet or project home page. There is a command called patch that apply a diff file or patch to an original source tree.

patch takes a patch file patchfile containing a difference listing produced by the diff program and applies those differences to one or more original files, producing patched versions. Normally the patched versions are put in place of the originals.

he following usage is most commonly used:

$ patch -p1 < {/path/to/patch/file}

To apply a patch, one could run the following command in a shell:

$ patch < /path/to/file

Patches can be undone, or reversed, with the '-R' option:

$ patch -R < /path/to/file