From 8ed44b4f1739c340ece3cc4d8f9c776a703d581c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Moreau?= <marcandre.moreau@gmail.com>
Date: Sun, 15 Jan 2012 15:20:39 -0500
Subject: [PATCH] libfreerdp-core: add integer overflow check in GCC

---
 libfreerdp-core/gcc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libfreerdp-core/gcc.c b/libfreerdp-core/gcc.c
index 565fdea8c..1b1254920 100644
--- a/libfreerdp-core/gcc.c
+++ b/libfreerdp-core/gcc.c
@@ -428,6 +428,9 @@ boolean gcc_read_user_data_header(STREAM* s, uint16* type, uint16* length)
 	stream_read_uint16(s, *type); /* type */
 	stream_read_uint16(s, *length); /* length */
 
+	if (*length < 4)
+		return false;
+
 	if (stream_get_left(s) < *length - 4)
 		return false;