From: Pascal Quantin <pascal.quantin@gmail.com>
Date: Sat, 9 Nov 2013 15:44:01 +0000
Subject: [PATCH] Fix https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=9388
 : Avoid an infinite loop in SIP dissector (backport of r51738)

svn path=/trunk-1.10/; revision=53195

diff --git a/epan/dissectors/packet-sip.c b/epan/dissectors/packet-sip.c
index a3ceec2..b012837 100644
--- a/epan/dissectors/packet-sip.c
+++ b/epan/dissectors/packet-sip.c
@@ -2134,6 +2134,10 @@ dissect_sip_common(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tr
 	 */
 	orig_offset = offset;
 	linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE);
+	if(linelen==0){
+		return -2;
+	}
+
 	if (tvb_strnlen(tvb, offset, linelen) > -1)
 	{
 		/*