From 87db1cf0f0fb53b4b93a09a7f9e34dae8fb7edd2 Mon Sep 17 00:00:00 2001
From: xirvik <community@xirvik.net>
Date: Fri, 7 Aug 2026 05:39:39 +0000
Subject: [PATCH] rpc: do not dereference a null result from the xmlrpc-c
 registry.

A failed call returns null, which was passed straight to xmlrpc_mem_block_contents.
---
 src/rpc/xmlrpc_c.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/rpc/xmlrpc_c.cc b/src/rpc/xmlrpc_c.cc
index 83efae78..ab04166d 100644
--- a/src/rpc/xmlrpc_c.cc
+++ b/src/rpc/xmlrpc_c.cc
@@ -451,6 +451,11 @@ XmlRpc::process(const char* inBuffer, uint32_t length, slot_write slotWrite) {
   if (local_env.fault_occurred && local_env.fault_code == XMLRPC_INTERNAL_ERROR)
     throw torrent::internal_error("Internal error in XMLRPC.");
 
+  if (memblock == nullptr) {
+    xmlrpc_env_clean(&local_env);
+    return false;
+  }
+
   bool result = slotWrite((const char*)xmlrpc_mem_block_contents(memblock),
                           xmlrpc_mem_block_size(memblock));