diff options
| author |   itojun <itojun@openbsd.org> | 2001-07-25 17:41:06 +0000 |
|---|---|---|
| committer | itojun <itojun@openbsd.org> | 2001-07-25 17:41:06 +0000 |
| commit | b29cfae3972d0c26f54428bf0889bf7c9dab4430 (patch) | |
| tree | 22179d7de6d293acfea41d702a3bbe5d394eaa26 | |
| parent | remove local hack (diff) | |
| download | wireguard-openbsd-b29cfae3972d0c26f54428bf0889bf7c9dab4430.tar.xz wireguard-openbsd-b29cfae3972d0c26f54428bf0889bf7c9dab4430.zip | |
do not write into s6_addr[16] (out of bounds).
| -rw-r--r-- | sbin/ifconfig/ifconfig.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sbin/ifconfig/ifconfig.c b/sbin/ifconfig/ifconfig.c index 020d84192af..c9414be532d 100644 --- a/sbin/ifconfig/ifconfig.c +++ b/sbin/ifconfig/ifconfig.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ifconfig.c,v 1.49 2001/07/07 18:26:13 deraadt Exp $ */ +/* $OpenBSD: ifconfig.c,v 1.50 2001/07/25 17:41:06 itojun Exp $ */ /* $NetBSD: ifconfig.c,v 1.40 1997/10/01 02:19:43 enami Exp $ */ /* @@ -81,7 +81,7 @@ static char copyright[] = #if 0 static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94"; #else -static char rcsid[] = "$OpenBSD: ifconfig.c,v 1.49 2001/07/07 18:26:13 deraadt Exp $"; +static char rcsid[] = "$OpenBSD: ifconfig.c,v 1.50 2001/07/25 17:41:06 itojun Exp $"; #endif #endif /* not lint */ @@ -1942,7 +1942,8 @@ in_getprefix(plen, which) memset((void *)&sin->sin_addr, 0x00, sizeof(sin->sin_addr)); for (cp = (u_char *)&sin->sin_addr; len > 7; len -= 8) *cp++ = 0xff; - *cp = 0xff << (8 - len); + if (len) + *cp = 0xff << (8 - len); } /* @@ -2047,7 +2048,8 @@ in6_getprefix(plen, which) memset((void *)&sin->sin6_addr, 0x00, sizeof(sin->sin6_addr)); for (cp = (u_char *)&sin->sin6_addr; len > 7; len -= 8) *cp++ = 0xff; - *cp = 0xff << (8 - len); + if (len) + *cp = 0xff << (8 - len); } int |