File libxml2-CVE-2021-3516.patch of Package libxml2

From 1358d157d0bd83be1dfe356a69213df9fac0b539 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Wed, 21 Apr 2021 13:23:27 +0200
Subject: [PATCH] Fix use-after-free with `xmllint --html --push`

Call htmlCtxtUseOptions to make sure that names aren't stored in
dictionaries.

Note that this issue only affects xmllint using the HTML push parser.

Fixes #230.
---
 xmllint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: libxml2-2.9.10/xmllint.c
===================================================================
--- libxml2-2.9.10.orig/xmllint.c
+++ libxml2-2.9.10/xmllint.c
@@ -2204,7 +2204,7 @@ static void parseAndPrintFile(char *file
             if (res > 0) {
                 ctxt = htmlCreatePushParserCtxt(NULL, NULL,
                             chars, res, filename, XML_CHAR_ENCODING_NONE);
-                xmlCtxtUseOptions(ctxt, options);
+                htmlCtxtUseOptions(ctxt, options);
                 while ((res = fread(chars, 1, pushsize, f)) > 0) {
                     htmlParseChunk(ctxt, chars, res, 0);
                 }