diff -Naur util-linux-2.11f.orig/login-utils/chfn.c util-linux-2.11f/login-utils/chfn.c
--- util-linux-2.11f.orig/login-utils/chfn.c	Thu Jun 14 12:07:45 2001
+++ util-linux-2.11f/login-utils/chfn.c	Thu Jun 14 12:11:12 2001
@@ -79,7 +79,7 @@
 	(((c) & 0x7f) < 0x20 || (c) == 0x7f)
 
 /* we do not accept gecos field sizes longer than MAX_FIELD_SIZE */
-#define MAX_FIELD_SIZE		256
+#define MAX_FIELD_SIZE		64
 
 int main (int argc, char **argv) {
     char *cp;