From 01dd639c1c83135ec76cd5639c6974b913f638d1 Mon Sep 17 00:00:00 2001
From: Stefan `Sec` Zehl <sec@42.org>
Date: Mon, 22 Aug 2011 22:04:12 +0200
Subject: [PATCH] Fix half-exploit: do not allow 0-byte loadables (padded to 16
 bytes for MAC)

---
 firmware/filesystem/execute.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/firmware/filesystem/execute.c b/firmware/filesystem/execute.c
index 391b071..7546e74 100644
--- a/firmware/filesystem/execute.c
+++ b/firmware/filesystem/execute.c
@@ -53,7 +53,7 @@ uint8_t execute_file (const char * fname){
     data = (uint32_t*)dst;
     len = readbytes/4;
 
-    if( readbytes & 0xF ){
+    if( readbytes & 0xF || readbytes <= 0x10){
         lcdClear();
         lcdPrint("!size");
         lcdRefresh();