From d044b11edcdc916a1435e2bf108a8532661ddd33 Mon Sep 17 00:00:00 2001
From: Grok Compression <support@grokcompression.com>
Date: Fri, 31 Jan 2025 14:25:55 -0500
Subject: [PATCH] t2: fix include buffer overflow

fixes buganizer #5453901339361280
---
 src/lib/core/t2/PacketIter.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/lib/core/t2/PacketIter.h b/src/lib/core/t2/PacketIter.h
index 8af3f18ee..d706f8109 100644
--- a/src/lib/core/t2/PacketIter.h
+++ b/src/lib/core/t2/PacketIter.h
@@ -98,13 +98,12 @@ struct LayerIncludeBuffers
       if(chunks.find(chunkIndex) == chunks.end())
          chunks[chunkIndex] =
              new uint8_t[GRK_INCLUDE_TRACKER_CHUNK_SIZE](); // Allocate chunk lazily
-
       auto include = chunks[chunkIndex] + chunkOffset;
       uint8_t bit = (bitIndex & 7);
-      uint8_t val = include[byteIndex];
+      uint8_t val = *include;
       if(((val >> bit) & 1) == 0)
       {
-         include[byteIndex] = (uint8_t)(val | (1 << bit));
+         *include = (uint8_t)(val | (1 << bit));
          return true;
       }