libxml2: security fix CVE-2015-7499

includes:
CVE-2015-7499-1
CVE-2015-7499-2

(From OE-Core rev: 3048fe24e4c5f83ad0971062a88592bcb6bf52bc)

Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/meta/recipes-core/libxml/libxml2/CVE-2015-7499-2-Detect-incoherency-on-GROW.patch b/meta/recipes-core/libxml/libxml2/CVE-2015-7499-2-Detect-incoherency-on-GROW.patch
new file mode 100644
index 0000000..aff3920
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2015-7499-2-Detect-incoherency-on-GROW.patch
@@ -0,0 +1,43 @@
+From 35bcb1d758ed70aa7b257c9c3b3ff55e54e3d0da Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard@redhat.com>
+Date: Fri, 20 Nov 2015 15:04:09 +0800
+Subject: [PATCH] Detect incoherency on GROW
+
+the current pointer to the input has to be between the base and end
+if not stop everything we have an internal state error.
+
+Upstream-Status: Backport
+
+CVE-2015-7499-2
+
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+---
+ parser.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/parser.c b/parser.c
+index 1810f99..ab007aa 100644
+--- a/parser.c
++++ b/parser.c
+@@ -2075,9 +2075,16 @@ static void xmlGROW (xmlParserCtxtPtr ctxt) {
+          ((ctxt->input->buf) && (ctxt->input->buf->readcallback != (xmlInputReadCallback) xmlNop)) &&
+         ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+         xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, "Huge input lookup");
+-        ctxt->instate = XML_PARSER_EOF;
++        xmlHaltParser(ctxt);
++	return;
+     }
+     xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
++    if ((ctxt->input->cur > ctxt->input->end) ||
++        (ctxt->input->cur < ctxt->input->base)) {
++        xmlHaltParser(ctxt);
++        xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, "cur index out of bound");
++	return;
++    }
+     if ((ctxt->input->cur != NULL) && (*ctxt->input->cur == 0) &&
+         (xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0))
+ 	    xmlPopInput(ctxt);
+-- 
+2.3.5
+