libxml2: update to 2.9.12

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

libs/libxml2/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libxml2
-PKG_VERSION:=2.9.10
-PKG_RELEASE:=3
+PKG_VERSION:=2.9.12
+PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://xmlsoft.org/sources/
-PKG_HASH:=aafee193ffb8fe0c82d4afef6ef91972cbaf5feea100edc2f262750611b4be1f
+PKG_HASH:=c8d6681e38c56f172892c85ddc0852e1fd4b53b4209e7f4ebf17f7e2eae71d92
 
 PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=COPYING

libs/libxml2/patches/001-CVE-2019-20388.patch

@@ -1,28 +0,0 @@
-From 6088a74bcf7d0c42e24cff4594d804e1d3c9fbca Mon Sep 17 00:00:00 2001
-From: Zhipeng Xie <xiezhipeng1@huawei.com>
-Date: Tue, 20 Aug 2019 16:33:06 +0800
-Subject: [PATCH] Fix memory leak in xmlSchemaValidateStream
-
-When ctxt->schema is NULL, xmlSchemaSAXPlug->xmlSchemaPreRun
-alloc a new schema for ctxt->schema and set vctxt->xsiAssemble
-to 1. Then xmlSchemaVStart->xmlSchemaPreRun initialize
-vctxt->xsiAssemble to 0 again which cause the alloced schema
-can not be freed anymore.
-
-Found with libFuzzer.
-
-Signed-off-by: Zhipeng Xie <xiezhipeng1@huawei.com>
----
- xmlschemas.c | 1 -
- 1 file changed, 1 deletion(-)
-
---- a/xmlschemas.c
-+++ b/xmlschemas.c
-@@ -28095,7 +28095,6 @@ xmlSchemaPreRun(xmlSchemaValidCtxtPtr vc
-     vctxt->nberrors = 0;
-     vctxt->depth = -1;
-     vctxt->skipDepth = -1;
--    vctxt->xsiAssemble = 0;
-     vctxt->hasKeyrefs = 0;
- #ifdef ENABLE_IDC_NODE_TABLES_TEST
-     vctxt->createIDCNodeTables = 1;

libs/libxml2/patches/002-CVE-2020-24977.patch

@@ -1,31 +0,0 @@
-From 50f06b3efb638efb0abd95dc62dca05ae67882c2 Mon Sep 17 00:00:00 2001
-From: Nick Wellnhofer <wellnhofer@aevum.de>
-Date: Fri, 7 Aug 2020 21:54:27 +0200
-Subject: [PATCH] Fix out-of-bounds read with 'xmllint --htmlout'
-
-Make sure that truncated UTF-8 sequences don't cause an out-of-bounds
-array access.
-
-Thanks to @SuhwanSong and the Agency for Defense Development (ADD) for
-the report.
-
-Fixes #178.
----
- xmllint.c | 6 ++++++
- 1 file changed, 6 insertions(+)
-
---- a/xmllint.c
-+++ b/xmllint.c
-@@ -528,6 +528,12 @@ static void
- xmlHTMLEncodeSend(void) {
-     char *result;
- 
-+    /*
-+     * xmlEncodeEntitiesReentrant assumes valid UTF-8, but the buffer might
-+     * end with a truncated UTF-8 sequence. This is a hack to at least avoid
-+     * an out-of-bounds read.
-+     */
-+    memset(&buffer[sizeof(buffer)-4], 0, 4);
-     result = (char *) xmlEncodeEntitiesReentrant(NULL, BAD_CAST buffer);
-     if (result) {
- 	xmlGenericError(xmlGenericErrorContext, "%s", result);

libs/libxml2/patches/003-CVE-2020-7595.patch

@@ -1,27 +0,0 @@
-From 0e1a49c8907645d2e155f0d89d4d9895ac5112b5 Mon Sep 17 00:00:00 2001
-From: Zhipeng Xie <xiezhipeng1@huawei.com>
-Date: Thu, 12 Dec 2019 17:30:55 +0800
-Subject: [PATCH] Fix infinite loop in xmlStringLenDecodeEntities
-
-When ctxt->instate == XML_PARSER_EOF,xmlParseStringEntityRef
-return NULL which cause a infinite loop in xmlStringLenDecodeEntities
-
-Found with libFuzzer.
-
-Signed-off-by: Zhipeng Xie <xiezhipeng1@huawei.com>
----
- parser.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
---- a/parser.c
-+++ b/parser.c
-@@ -2646,7 +2646,8 @@ xmlStringLenDecodeEntities(xmlParserCtxt
-     else
-         c = 0;
-     while ((c != 0) && (c != end) && /* non input consuming loop */
--	   (c != end2) && (c != end3)) {
-+           (c != end2) && (c != end3) &&
-+           (ctxt->instate != XML_PARSER_EOF)) {
- 
- 	if (c == 0) break;
-         if ((c == '&') && (str[1] == '#')) {