the password and shell returned by the getpwent(), getpwnam(), and
getpwuid() functions are tainted.
+=head2 The shmread() now taints its variable
+
+Because other (untrusted) processes can modify shared memory segments
+for their own nefarious purposes, the variable modified by shmread()
+becomes tainted.
+
=back
=head2 C Source Incompatibilities