From 3093047f1aa36bed8a37fa79004bf0ee287929f4 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 11 Dec 2008 20:57:45 +0100
Subject: [PATCH] Don't get confused by UDP packets with a source port that is zero
This is a fix for rhbz 475394.
Problem identified by Hugo Dias.
---
avahi-core/server.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/avahi-core/server.c b/avahi-core/server.c
index c4980af..11ab6cf 100644
--- a/avahi-core/server.c
+++ b/avahi-core/server.c
@@ -898,6 +898,12 @@ static void dispatch_packet(AvahiServer *s, AvahiDnsPacket *p, const AvahiAddres
return;
}
+ if (port <= 0) {
+ /* This fixes RHBZ #475394 */
+ avahi_log_warn("Received packet from invalid source port.");
+ return;
+ }
+
if (avahi_address_is_ipv4_in_ipv6(src_address))
/* This is an IPv4 address encapsulated in IPv6, so let's ignore it. */
return;
--
1.6.0.5