In 4.x, Following message is crashing the Kamailio.

MESSAGE sip:50.62.12.174:15060;transport=udp SIP/2.0..Via: SIP/2.0/UDP 50.62.72.174:15060;branch=z9hG4bK3333.defaafa4.0..Via: SIP/2.0/UDP 50.62.72.174:15060;branch=z9hG4bK3333.cefaafa4.0..

Via: SIP/2.0/UDP 50.62.12.174:15060;branch=z9hG4bK3333.befaafa4.0..

Via: SIP/2.0/UDP 50.62.12.174:15060;branch=z9hG4bK3333.aefaafa4.0..

Via: SIP/2.0/UDP 50.62.12.174:15060;branch=z9hG4bK33339efaafa4.0..

Via: SIP/2.0/UDP 50.62.12.174:15060;branch=z9hG4bK3333.8efaafa4.0..

Via: SIP/2.0/UDP 50.62.12.174:15060;branch=z9hG4bK3333.7efaafa4.0..

Via: SIP/2.0/UDP 50.62.12.174;branch=z9hk4bK3333.4b488206.0..

Via: SIP/2.0/UDP 50.62.12.174;rport=5060;branch=z9hG4bK3333.3b488206.0..

To: sip:578626051@50.62.12.174..

From: sip:notifier@abc.com;tag=5571efee096a394dda7d0dffc5bb

32a5-c771..CSeq: 10 MESSAGE..Call-ID: presence-T[578626051]-R[578626051]..Max-Forwards: 9..Co

ntent-Length: 110..User-Agent: kamailio (4.0.1 (x86_64/linux))..Content-Type: text/html; chars

et=utf-8.

stack trace:

#0 qm_detach_free (qm=0x2ac39d748010, size=64) at mem/q_malloc.c:269

#1 qm_malloc (qm=0x2ac39d748010, size=64) at mem/q_malloc.c:386

#2 0x0000000000560fa1 in parse_via (

buffer=0x8c6a3b "SIP/2.0/UDP 50.62.72.174:15060;branch=z9hG4bK3333.defaafa4.0\r\nVia: SIP/2.0/UDP 50.62.72.174:15060;branch=z9hG4bK3333.cefaafa4.0\r\nVia: SIP/2.0/UDP 50.62.72.174:15060;branch=z9hG4bK3333.befaafa4.0\r\nVia:"..., end=0x8c6e31 "", vbody=0x2ac39d769e90)

at parser/parse_via.c:2540

#3 0x0000000000538e68 in get_hdr_field (buf=<value optimized out>, end=0x8c6e31 "",

hdr=0x2ac39d7999c0) at parser/msg_parser.c:140

#4 0x0000000000539ac9 in parse_headers (msg=0x2ac39d78a100, flags=2, next=<value optimized out>)

at parser/msg_parser.c:351

#5 0x000000000053af8d in parse_msg (buf=<value optimized out>, len=<value optimized out>,

msg=0x2ac39d78a100) at parser/msg_parser.c:650

#6 0x000000000049a2ef in receive_msg (

buf=0x8c6a00 "MESSAGE sip:50.62.72.174:15060;transport=udp SIP/2.0\r\nVia: SIP/2.0/UDP 50.62.72.174:15060;branch=z9hG4bK3333.defaafa4.0\r\nVia: SIP/2.0/UDP 50.62.72.174:15060;branch=z9hG4bK3333.cefaafa4.0\r\nVia: SIP/2.0"..., len=1073, rcv_info=0x7fffb40ab770) at receive.c:144

#7 0x0000000000528666 in udp_rcv_loop () at udp_server.c:557

#8 0x0000000000464daa in main_loop () at main.c:1638

#9 0x0000000000467adc in main (argc=<value optimized out>, argv=<value optimized out>)