[src/trunk]: src/usr.sbin/sysinst Avoid a buffer overrun with too many interf...

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2506e767f9d6
branches:  trunk
changeset: 457861:2506e767f9d6
user:      martin <martin%NetBSD.org@localhost>
date:      Tue Jul 23 12:37:23 2019 +0000

description:
Avoid a buffer overrun with too many interfaces.

diffstat:

 usr.sbin/sysinst/net.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (19 lines):

diff -r da12033e6d6e -r 2506e767f9d6 usr.sbin/sysinst/net.c
--- a/usr.sbin/sysinst/net.c    Tue Jul 23 12:34:47 2019 +0000
+++ b/usr.sbin/sysinst/net.c    Tue Jul 23 12:37:23 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: net.c,v 1.32 2019/07/08 19:46:57 martin Exp $  */
+/*     $NetBSD: net.c,v 1.33 2019/07/23 12:37:23 martin Exp $  */
 
 /*
  * Copyright 1997 Piermont Information Systems Inc.
@@ -260,7 +260,8 @@
                strlcpy (devs[i].if_dev, buf, STRSIZE);
                i++;
        }
-       strcpy(devs[i].if_dev, "\0");
+       if (i < MAX_NETS)
+               devs[i].if_dev[0] = 0;  /* XXX ? */
 
        free(buf);
        free(buf_in);