From bd7e79df36f8bf473bd6332eda7f1def5b9aaad7 Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <andreykproductengine@lindenlab.com>
Date: Fri, 30 May 2025 17:37:51 +0300
Subject: #4191 Crash opening a gltf model

---
 indra/newview/gltf/buffer_util.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'indra/newview/gltf/buffer_util.h')

diff --git a/indra/newview/gltf/buffer_util.h b/indra/newview/gltf/buffer_util.h
index 2632a0f263..be36c5e90b 100644
--- a/indra/newview/gltf/buffer_util.h
+++ b/indra/newview/gltf/buffer_util.h
@@ -375,6 +375,11 @@ namespace LL
         template<class T>
         inline void copy(Asset& asset, Accessor& accessor, LLStrider<T>& dst)
         {
+            if (accessor.mBufferView == INVALID_INDEX)
+            {
+                LL_WARNS("GLTF") << "Invalid buffer" << LL_ENDL;
+                return;
+            }
             const BufferView& bufferView = asset.mBufferViews[accessor.mBufferView];
             const Buffer& buffer = asset.mBuffers[bufferView.mBuffer];
             const U8* src = buffer.mData.data() + bufferView.mByteOffset + accessor.mByteOffset;
-- 
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