<sect2>
<title>Command explanations</title>

<para><userinput>patch -Np1 -i ../ed-&ed-version;.patch:</userinput> This
patch fixes a symlink vulnerability in ed. The ed executable creates files
in /tmp with predictable names. By using various symlink attacks, it is
possible to have ed write to files it should not, change the permissions
of files, etc.</para>

</sect2>

