diff -r 3ae5cb0b4c02 -r a26669f87b46 backupandrestore/backupengine/src/sbecompressionandencryption.cpp
--- a/backupandrestore/backupengine/src/sbecompressionandencryption.cpp	Fri Jun 25 16:54:01 2010 +0800
+++ b/backupandrestore/backupengine/src/sbecompressionandencryption.cpp	Fri Jul 09 17:58:21 2010 +0800
@@ -709,7 +709,7 @@
 			iEncryptionHeader.iEncrypted, iEncryptionHeader.iBufferSize, iEncryptionHeader.iTotalSize);
 		
 		// Check we have a sensible encryption header
-		if ((iEncryptionHeader.iBufferSize < 0) ||
+		if ((iEncryptionHeader.iBufferSize < 0) || (iEncryptionHeader.iBufferSize >= KMaxTInt/2) ||
 			(iEncryptionHeader.iTotalSize < 0))
 			{
 			__LOG("CSBEDecompressAndEncrypt::CreateCipherL() - Corrupt data");