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-rw-r--r--src/network/core/udp.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/network/core/udp.c b/src/network/core/udp.c
index 5e32ad8e4..6699b4b87 100644
--- a/src/network/core/udp.c
+++ b/src/network/core/udp.c
@@ -116,11 +116,19 @@ void NetworkUDPReceive(const SOCKET udp)
/* Try to receive anything */
nbytes = recvfrom(udp, p.buffer, packet_len, 0, (struct sockaddr *)&client_addr, &client_len);
- /* We got some bytes for the base header of the packet.
- * Assume we received the whole packet. */
+ /* We got some bytes for the base header of the packet. */
if (nbytes > 2) {
NetworkRecv_ReadPacketSize(&p);
+ /* If the size does not match the packet must be corrupted.
+ * Otherwise it will be marked as corrupted later on. */
+ if (nbytes != p.size) {
+ DEBUG(net, 1, "received a packet with mismatching size from %s:%d",
+ inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port));
+
+ return;
+ }
+
/* Put the position on the right place */
p.pos = 2;
p.next = NULL;