From 81a5f2df9bae4a11ee98818181d54ab1d80aafbb Mon Sep 17 00:00:00 2001
From: Fabian Sauter <sauter.fabian@mailbox.org>
Date: Fri, 13 Oct 2023 19:22:56 +0200
Subject: [PATCH] Fixed curl multi reuse after free

---
 cpr/multiperform.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/cpr/multiperform.cpp b/cpr/multiperform.cpp
index 051f2d687..f038d00e6 100644
--- a/cpr/multiperform.cpp
+++ b/cpr/multiperform.cpp
@@ -1,6 +1,7 @@
 #include "cpr/multiperform.h"
 
 #include "cpr/interceptor.h"
+#include "cpr/multipart.h"
 #include "cpr/response.h"
 #include "cpr/session.h"
 #include <algorithm>
@@ -16,6 +17,13 @@ MultiPerform::~MultiPerform() {
     // Unlock all sessions
     for (const std::pair<std::shared_ptr<Session>, HttpMethod>& pair : sessions_) {
         pair.first->isUsedInMultiPerform = false;
+
+        // Remove easy handle from multi handle
+        const CURLMcode error_code = curl_multi_remove_handle(multicurl_->handle, pair.first->curl_->handle);
+        if (error_code) {
+            std::cerr << "curl_multi_remove_handle() failed, code " << static_cast<int>(error_code) << std::endl;
+            return;
+        }
     }
 }