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validate sa_len on equal() macro. without the change we may touch the content 

of a2 beyond a2->sa_len mistakelnly.  sync with kame
This commit is contained in:
itojun 2001-07-20 18:52:18 +00:00
parent febe7ce944
commit 866fc79bb9
1 changed files with 4 additions and 2 deletions
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6
sys/net/route.c
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@ -1,4 +1,4 @@
/* $NetBSD: route.c,v 1.44 2001/07/18 16:43:10 thorpej Exp $ */
/* $NetBSD: route.c,v 1.45 2001/07/20 18:52:18 itojun Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -301,7 +301,9 @@ rtredirect(dst, gateway, netmask, flags, src, rtp)
* we have a routing loop, perhaps as a result of an interface
* going down recently.
*/
#define equal(a1, a2) (bcmp((caddr_t)(a1), (caddr_t)(a2), (a1)->sa_len) == 0)
#define equal(a1, a2) \
((a1)->sa_len == (a2)->sa_len && \
bcmp((caddr_t)(a1), (caddr_t)(a2), (a1)->sa_len) == 0)
if (!(flags & RTF_DONE) && rt &&
(!equal(src, rt->rt_gateway) || rt->rt_ifa != ifa))
error = EINVAL;