From 4923e2ecaafe340409ed67b46dba794d3e031914 Mon Sep 17 00:00:00 2001
From: Mirco Miranda <mircomir@gmail.com>
Date: Mon, 11 Nov 2024 23:06:49 +0000
Subject: [PATCH] RGB: avoid to read wrong data

Should fixes OSS Fuzz issue 42538251
---
 src/imageformats/rgb.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/imageformats/rgb.cpp b/src/imageformats/rgb.cpp
index bb5534c..bc7ce5e 100644
--- a/src/imageformats/rgb.cpp
+++ b/src/imageformats/rgb.cpp
@@ -316,6 +316,9 @@ bool SGIImagePrivate::readImage(QImage &img)
         for (l = 0; !_stream.atEnd() && l < _numrows; l++) {
             _stream >> _starttab[l];
             _starttab[l] -= 512 + _numrows * 2 * sizeof(quint32);
+            if (_stream.status() != QDataStream::Ok) {
+                return false;
+            }
         }
         for (; l < _numrows; l++) {
             _starttab[l] = 0;
@@ -324,6 +327,9 @@ bool SGIImagePrivate::readImage(QImage &img)
         _lengthtab = new quint32[_numrows];
         for (l = 0; !_stream.atEnd() && l < _numrows; l++) {
             _stream >> _lengthtab[l];
+            if (_stream.status() != QDataStream::Ok) {
+                return false;
+            }
         }
     }