From 61555de2407e34d0b1565cde502b625b37c426b0 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Thu, 26 Sep 2024 13:45:23 +0200
Subject: [PATCH] GTiff: do not query TIFFTAG_TRANSFERFUNCTION if
 m_nBitsPerSample > 24

Fixes #10875
---
 frmts/gtiff/gtiffdataset_read.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/frmts/gtiff/gtiffdataset_read.cpp b/frmts/gtiff/gtiffdataset_read.cpp
index c8db2594b24d..8a676aa12bd2 100644
--- a/frmts/gtiff/gtiffdataset_read.cpp
+++ b/frmts/gtiff/gtiffdataset_read.cpp
@@ -4763,7 +4763,8 @@ void GTiffDataset::LoadICCProfile()
     {
         if (TIFFGetField(m_hTIFF, TIFFTAG_WHITEPOINT, &pWP))
         {
-            if (!TIFFGetFieldDefaulted(m_hTIFF, TIFFTAG_TRANSFERFUNCTION, &pTFR,
+            if (m_nBitsPerSample > 24 ||
+                !TIFFGetFieldDefaulted(m_hTIFF, TIFFTAG_TRANSFERFUNCTION, &pTFR,
                                        &pTFG, &pTFB) ||
                 pTFR == nullptr || pTFG == nullptr || pTFB == nullptr)
             {