From d9e2b4c650936420f818a1bd1c1289c17e3376a9 Mon Sep 17 00:00:00 2001
From: Alexander Smorkalov <alexander.smorkalov@opencv.ai>
Date: Thu, 26 Jun 2025 17:19:10 +0300
Subject: [PATCH] Fixed out-of-bound access issue in QR Encoder Java warappers.

---
 modules/objdetect/misc/java/gen_dict.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/modules/objdetect/misc/java/gen_dict.json b/modules/objdetect/misc/java/gen_dict.json
index 2f453a6a91..376c7ad920 100644
--- a/modules/objdetect/misc/java/gen_dict.json
+++ b/modules/objdetect/misc/java/gen_dict.json
@@ -34,8 +34,9 @@
                     "        LOGD(\"%s\", method_name);",
                     "        Ptr<cv::QRCodeEncoder>* me = (Ptr<cv::QRCodeEncoder>*) self; //TODO: check for NULL",
                     "        const char* n_encoded_info = reinterpret_cast<char*>(env->GetByteArrayElements(encoded_info, NULL));",
+                    "        const jsize n_encoded_info_size = env->GetArrayLength(encoded_info);",
                     "        Mat& qrcode = *((Mat*)qrcode_nativeObj);",
-                    "        (*me)->encode( n_encoded_info, qrcode );",
+                    "        (*me)->encode( std::string(n_encoded_info, n_encoded_info_size), qrcode );",
                     "    } catch(const std::exception &e) {",
                     "        throwJavaException(env, &e, method_name);",
                     "    } catch (...) {",