From 3c7c5ba8d451d88db2bf6dcac6341a823e6dedab Mon Sep 17 00:00:00 2001
From: arrai <array.of.intellect@gmail.com>
Date: Thu, 19 Mar 2009 21:43:33 +0100
Subject: [PATCH] Fixed possible crash caused by invalid formed
 CMSG_AUTH_SESSION (cherry picked from commit
 7a97e917ede5aa6135bc0565486a15b86381f5a7)

Signed-off-by: tomrus88 <tomrus88@gmail.com>
---
 src/game/WorldSession.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/game/WorldSession.cpp b/src/game/WorldSession.cpp
index 8f2a00821..a2c9ad097 100644
--- a/src/game/WorldSession.cpp
+++ b/src/game/WorldSession.cpp
@@ -613,6 +613,8 @@ void WorldSession::ReadMovementInfo(WorldPacket &data, MovementInfo *mi)
 
 void WorldSession::ReadAddonsInfo(WorldPacket &data)
 {
+    if (data.rpos() + 4 > data.size())
+        return;
     uint32 size;
     data >> size;