From: bluhm <bluhm@openbsd.org>
Date: Tue, 26 Mar 2024 10:01:57 +0000 (+0000)
Subject: Avoid NULL pointer dereference in routing table an_match().
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=d75bd533f0ad534486488013eeeaa642ea1f5f58;p=openbsd

Avoid NULL pointer dereference in routing table an_match().

OK mvs@
---

diff --git a/sys/net/rtable.c b/sys/net/rtable.c
index 38282ebd77e..48108ce025c 100644
--- a/sys/net/rtable.c
+++ b/sys/net/rtable.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: rtable.c,v 1.85 2023/11/12 17:51:40 bluhm Exp $ */
+/*	$OpenBSD: rtable.c,v 1.86 2024/03/26 10:01:57 bluhm Exp $ */
 
 /*
  * Copyright (c) 2014-2016 Martin Pieuchot
@@ -875,7 +875,7 @@ an_match(struct art_node *an, const struct sockaddr *dst, int plen)
 		return (0);
 
 	rt = SRPL_FIRST(&sr, &an->an_rtlist);
-	match = (memcmp(rt->rt_dest, dst, dst->sa_len) == 0);
+	match = (rt != NULL && memcmp(rt->rt_dest, dst, dst->sa_len) == 0);
 	SRPL_LEAVE(&sr);
 
 	return (match);