From 8588c053b632abacf2cbbd6cea0ec0d34c99df52 Mon Sep 17 00:00:00 2001
From: Mirco Miranda <mircomir@gmail.com>
Date: Tue, 27 Aug 2024 21:52:16 +0000
Subject: [PATCH] XCF: fix crash

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

diff --git a/src/imageformats/xcf.cpp b/src/imageformats/xcf.cpp
index 97b3ab1..3d67eca 100644
--- a/src/imageformats/xcf.cpp
+++ b/src/imageformats/xcf.cpp
@@ -1974,6 +1974,12 @@ static bool convertFloatTo16Bit(uchar *output, quint64 outputSize, uchar *input)
  */
 bool XCFImageFormat::loadLevel(QDataStream &xcf_io, Layer &layer, qint32 bpp, const GimpPrecision precision)
 {
+    auto bpc = bytesPerChannel(precision);
+    if ((bpc == 0) || (bpp % bpc)) {
+        qCDebug(XCFPLUGIN) << "XCF: the stream seems corrupted";
+        return false;
+    }
+
     qint32 width;
     qint32 height;