Check the packet size in dnspcap2protobuf

diff --git a/pdns/dnspcap2protobuf.cc b/pdns/dnspcap2protobuf.cc
index 448dcfb78a0a7cd882e56a152204286e73b8c773..2b7698a8aa89c301579f67afef2f169f6ec4dd13 100644 (file)
--- a/pdns/dnspcap2protobuf.cc
+++ b/pdns/dnspcap2protobuf.cc
@@ -89,6 +89,9 @@ int main(int argc, char **argv)
     if (!dh->qdcount)
       continue;
 
+    if (pr.d_len < sizeof(dnsheader))
+      continue;
+
     uint16_t qtype, qclass;
     DNSName qname;
     try {