From fc256953d29698ba5918c32d14fc69ea69d7e64e Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Thu, 16 Feb 2023 14:47:41 +0100
Subject: [PATCH] malloc-fail: Fix memory leak in htmlCreateMemoryParserCtxt

Found with libFuzzer, see #344.
---
 HTMLparser.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/HTMLparser.c b/HTMLparser.c
index 04578e70..01092a3d 100644
--- a/HTMLparser.c
+++ b/HTMLparser.c
@@ -5227,7 +5227,10 @@ htmlCreateMemoryParserCtxt(const char *buffer, int size) {
 	return(NULL);
 
     buf = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE);
-    if (buf == NULL) return(NULL);
+    if (buf == NULL) {
+	xmlFreeParserCtxt(ctxt);
+        return(NULL);
+    }
 
     input = xmlNewInputStream(ctxt);
     if (input == NULL) {