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Fix OBOB in IP timestamp option processing, as noted in FreeBSD PR 6738, 

from Jennifer Dawn Meyers <jdm@enteract.com>.
This commit is contained in:
thorpej 1998-05-24 20:14:53 +00:00
parent 3759ec18f5
commit f555f6d93f
1 changed files with 3 additions and 3 deletions
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6
sys/netinet/ip_input.c
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@ -1,4 +1,4 @@
/* $NetBSD: ip_input.c,v 1.65 1998/05/04 19:24:53 matt Exp $ */
/* $NetBSD: ip_input.c,v 1.66 1998/05/24 20:14:53 thorpej Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -891,7 +891,7 @@ ip_dooptions(m)
break;
case IPOPT_TS_TSANDADDR:
if (ipt->ipt_ptr + sizeof(n_time) +
if (ipt->ipt_ptr - 1 + sizeof(n_time) +
sizeof(struct in_addr) > ipt->ipt_len)
goto bad;
ipaddr.sin_addr = dst;
@ -905,7 +905,7 @@ ip_dooptions(m)
break;
case IPOPT_TS_PRESPEC:
if (ipt->ipt_ptr + sizeof(n_time) +
if (ipt->ipt_ptr - 1 + sizeof(n_time) +
sizeof(struct in_addr) > ipt->ipt_len)
goto bad;
bcopy((caddr_t)sin, (caddr_t)&ipaddr.sin_addr,