From 6bb146a3ea24a9bacfad6fe67268f0404af37d9c Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Wed, 2 Nov 2022 16:13:27 +0100
Subject: [PATCH] malloc-fail: Fix use-after-free in xmlXIncludeAddNode

Found with libFuzzer, see #344.
---
 xinclude.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xinclude.c b/xinclude.c
index 2a0614d7..e32b3419 100644
--- a/xinclude.c
+++ b/xinclude.c
@@ -614,14 +614,15 @@ xmlXIncludeAddNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr cur) {
     }
     URL = xmlSaveUri(uri);
     xmlFreeURI(uri);
-    xmlFree(URI);
     if (URL == NULL) {
 	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
 	               "invalid value URI %s\n", URI);
 	if (fragment != NULL)
 	    xmlFree(fragment);
+        xmlFree(URI);
 	return(-1);
     }
+    xmlFree(URI);
 
     /*
      * If local and xml then we need a fragment
-- 
2.48.1