From 82e6e42b9ee62af0e39049e3d789457fe1a41281 Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <andreykproductengine@lindenlab.com>
Date: Tue, 12 Aug 2025 22:13:51 +0300
Subject: #4527 Crash trying to upload a huge image

Raw image permits only a 256 MB buffer so this isn't unexpected.
---
 indra/llimage/llimagebmp.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'indra/llimage/llimagebmp.cpp')

diff --git a/indra/llimage/llimagebmp.cpp b/indra/llimage/llimagebmp.cpp
index 2a328675c2..c8f99380ea 100644
--- a/indra/llimage/llimagebmp.cpp
+++ b/indra/llimage/llimagebmp.cpp
@@ -558,6 +558,12 @@ bool LLImageBMP::encode(const LLImageRaw* raw_image, F32 encode_time)
         LL_INFOS() << "Dropping alpha information during BMP encoding" << LL_ENDL;
     }
 
+    if (raw_image->isBufferInvalid())
+    {
+        setLastError("Invalid input, no buffer");
+        return false;
+    }
+
     setSize(raw_image->getWidth(), raw_image->getHeight(), dst_components);
 
     U8 magic[14];
-- 
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