From e45b65e8145fb5c2501b6026dcbf9745e79f3ce1 Mon Sep 17 00:00:00 2001
From: Albert Astals Cid <aacid@kde.org>
Date: Mon, 28 Jan 2019 21:48:26 +0100
Subject: [PATCH] rgb: Fix crash in fuzzed image

An image without color channels makes no sense
---
 src/imageformats/rgb.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/imageformats/rgb.cpp b/src/imageformats/rgb.cpp
index 929f9e4..d09fadf 100644
--- a/src/imageformats/rgb.cpp
+++ b/src/imageformats/rgb.cpp
@@ -316,6 +316,9 @@ bool SGIImage::readImage(QImage &img)
 
     img = QImage(_xsize, _ysize, QImage::Format_RGB32);
 
+    if (_zsize == 0 )
+        return false;
+
     if (_zsize == 2 || _zsize == 4) {
         img = img.convertToFormat(QImage::Format_ARGB32);
     } else if (_zsize > 4) {