From 309cddbe8389184541f8a7cc4385d2a3139ec1d1 Mon Sep 17 00:00:00 2001
From: Albert Astals Cid <aacid@kde.org>
Date: Mon, 28 Jan 2019 01:30:17 +0100
Subject: [PATCH] xcf: bzero buffer if read less data than expected

---
 src/imageformats/xcf.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/imageformats/xcf.cpp b/src/imageformats/xcf.cpp
index 7746db5..f837112 100644
--- a/src/imageformats/xcf.cpp
+++ b/src/imageformats/xcf.cpp
@@ -1119,7 +1119,11 @@ bool XCFImageFormat::loadTileRLE(QDataStream &xcf_io, uchar *tile, int image_siz
 
     xcfdata = xcfodata = new uchar[data_length];
 
-    xcf_io.readRawData((char *)xcfdata, data_length);
+    const int dataRead = xcf_io.readRawData((char *)xcfdata, data_length);
+    if (dataRead < data_length) {
+//      qDebug() << "XCF: read less data than expected" << data_length << dataRead;
+        bzero(&xcfdata[dataRead], data_length - dataRead);
+    }
 
     if (!xcf_io.device()->isOpen()) {
         delete[] xcfodata;