From 9a82458c43b18332323605325d4082f8ac1ae6de Mon Sep 17 00:00:00 2001
From: Alexander Smorkalov <alexander.smorkalov@opencv.ai>
Date: Mon, 29 Sep 2025 19:23:55 +0300
Subject: [PATCH] Fixed out-of-bound access during extra params handing in BMP
 encoder.

---
 modules/imgcodecs/src/grfmt_bmp.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/imgcodecs/src/grfmt_bmp.cpp b/modules/imgcodecs/src/grfmt_bmp.cpp
index f0802211d9..4540d3cd93 100644
--- a/modules/imgcodecs/src/grfmt_bmp.cpp
+++ b/modules/imgcodecs/src/grfmt_bmp.cpp
@@ -633,7 +633,7 @@ bool  BmpEncoder::write( const Mat& img, const std::vector<int>& params )
     // sRGB colorspace requires BITMAPV5HEADER.
     // See https://learn.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-bitmapv5header
     bool useV5BitFields = true;
-    for(size_t i = 0 ; i < params.size(); i++)
+    for(size_t i = 0; i < params.size(); i+=2)
     {
         const int value = params[i+1];
         switch(params[i])