diff -ru sbin/newfs_msdos.orig/newfs_msdos.c sbin/newfs_msdos/newfs_msdos.c
--- sbin/newfs_msdos.orig/newfs_msdos.c	2003-06-17 01:27:34.000000000 -0300
+++ sbin/newfs_msdos/newfs_msdos.c	2004-10-25 22:04:36.000000000 -0200
@@ -607,7 +607,7 @@
 			  (u_int)tm->tm_min));
 		mk4(bsx->volid, x);
 		mklabel(bsx->label, opt_L ? opt_L : "NO NAME");
-		sprintf(buf, "FAT%u", fat);
+		snprintf(buf, sizeof(buf), "FAT%u", fat);
 		setstr(bsx->type, buf, sizeof(bsx->type));
 		if (!opt_B) {
 		    x1 += sizeof(struct bsx);