[OE-core] [PATCH][jethro][fido] 09/15] libxml2: security fix CVE-2015-7499-1

[Armin Kuster]

From: Armin Kuster <akuster at mvista.com>

Signed-off-by: Armin Kuster <akuster at mvista.com>
---
 ...99-1-Add-xmlHaltParser-to-stop-the-parser.patch | 88 ++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 meta/recipes-core/libxml/libxml2/CVE-2015-7499-1-Add-xmlHaltParser-to-stop-the-parser.patch

diff --git a/meta/recipes-core/libxml/libxml2/CVE-2015-7499-1-Add-xmlHaltParser-to-stop-the-parser.patch b/meta/recipes-core/libxml/libxml2/CVE-2015-7499-1-Add-xmlHaltParser-to-stop-the-parser.patch
new file mode 100644
index 0000000..e39ec65
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2015-7499-1-Add-xmlHaltParser-to-stop-the-parser.patch
@@ -0,0 +1,88 @@
+From 28cd9cb747a94483f4aea7f0968d202c20bb4cfc Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard at redhat.com>
+Date: Fri, 20 Nov 2015 14:55:30 +0800
+Subject: [PATCH] Add xmlHaltParser() to stop the parser
+
+The problem is doing it in a consistent and safe fashion
+It's more complex than just setting ctxt->instate = XML_PARSER_EOF
+Update the public function to reuse that new internal routine
+
+Upstream-Status: Backport
+
+CVE-2015-7499-1
+
+Signed-off-by: Armin Kuster <akuster at mvista.com>
+
+---
+ parser.c | 34 +++++++++++++++++++++++++++++-----
+ 1 file changed, 29 insertions(+), 5 deletions(-)
+
+diff --git a/parser.c b/parser.c
+index da6e729..b6e99b1 100644
+--- a/parser.c
++++ b/parser.c
+@@ -94,6 +94,8 @@ static xmlParserCtxtPtr
+ xmlCreateEntityParserCtxtInternal(const xmlChar *URL, const xmlChar *ID,
+ 	                  const xmlChar *base, xmlParserCtxtPtr pctx);
+ 
++static void xmlHaltParser(xmlParserCtxtPtr ctxt);
++
+ /************************************************************************
+  *									*
+  *	Arbitrary limits set in the parser. See XML_PARSE_HUGE		*
+@@ -12625,25 +12627,47 @@ xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax, void *user_data,
+ #endif /* LIBXML_PUSH_ENABLED */
+ 
+ /**
+- * xmlStopParser:
++ * xmlHaltParser:
+  * @ctxt:  an XML parser context
+  *
+- * Blocks further parser processing
++ * Blocks further parser processing don't override error
++ * for internal use
+  */
+-void
+-xmlStopParser(xmlParserCtxtPtr ctxt) {
++static void
++xmlHaltParser(xmlParserCtxtPtr ctxt) {
+     if (ctxt == NULL)
+         return;
+     ctxt->instate = XML_PARSER_EOF;
+-    ctxt->errNo = XML_ERR_USER_STOP;
+     ctxt->disableSAX = 1;
+     if (ctxt->input != NULL) {
++        /*
++	 * in case there was a specific allocation deallocate before
++	 * overriding base
++	 */
++        if (ctxt->input->free != NULL) {
++	    ctxt->input->free((xmlChar *) ctxt->input->base);
++	    ctxt->input->free = NULL;
++	}
+ 	ctxt->input->cur = BAD_CAST"";
+ 	ctxt->input->base = ctxt->input->cur;
+     }
+ }
+ 
+ /**
++ * xmlStopParser:
++ * @ctxt:  an XML parser context
++ *
++ * Blocks further parser processing
++ */
++void
++xmlStopParser(xmlParserCtxtPtr ctxt) {
++    if (ctxt == NULL)
++        return;
++    xmlHaltParser(ctxt);
++    ctxt->errNo = XML_ERR_USER_STOP;
++}
++
++/**
+  * xmlCreateIOParserCtxt:
+  * @sax:  a SAX handler
+  * @user_data:  The user data returned on SAX callbacks
+-- 
+2.3.5
+
-- 
2.3.5