From f21a99eaf8fcad5456110580b5aed1264f25060b Mon Sep 17 00:00:00 2001
From: Michael Vetter <jubalh@iodoru.org>
Date: Thu, 25 Mar 2021 11:38:22 +0100
Subject: [PATCH] message: fix possible segfault in _handle_muc_user

---
 src/xmpp/message.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/xmpp/message.c b/src/xmpp/message.c
index a88956f9..6924b509 100644
--- a/src/xmpp/message.c
+++ b/src/xmpp/message.c
@@ -877,6 +877,10 @@ _handle_muc_user(xmpp_stanza_t* const stanza)
     xmpp_stanza_t* xns_muc_user = xmpp_stanza_get_child_by_ns(stanza, STANZA_NS_MUC_USER);
     const char* room = xmpp_stanza_get_from(stanza);
 
+    if (!xns_muc_user) {
+        return;
+    }
+
     if (!room) {
         log_warning("Message received with no from attribute, ignoring");
         return;