--- shadow-4.0.5/src/su.c	2004-11-07 20:51:54.992246016 +0200
+++ shadow-4.0.5.az/src/su.c	2004-11-07 20:47:56.972430528 +0200
@@ -684,7 +684,7 @@
 	envcp = pam_getenvlist (pamh);
 	if (envcp) {
 		while (*envcp) {
-			putenv (*envcp);
+			addenv (*envcp, NULL);
 			envcp++;
 		}
 	}