libxml2 CVE-2012-2871

the patch come from:
http://src.chromium.org/viewvc/chrome/trunk/src/third_party/libxml/src \
/include/libxml/tree.h?r1=56276&r2=149930

libxml2 2.9.0-rc1 and earlier, as used in Google Chrome before 21.0.1180.89,
does not properly support a cast of an unspecified variable during handling
of XSL transforms, which allows remote attackers to cause a denial of service
or possibly have unknown other impact via a crafted document, related to the
_xmlNs data structure in include/libxml/tree.h.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-2871

[YOCTO #3580]
[ CQID: WIND00376779 ]
Upstream-Status: Pending

(From OE-Core rev: bc601f96f34ad17a87f599b58e502ec1b2c13fa3)

Signed-off-by: Li Wang <li.wang@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/libxml/libxml2/libxml2-CVE-2012-2871.patch

@@ -0,0 +1,34 @@
+libxml2 CVE-2012-2871
+
+the patch come from:
+http://src.chromium.org/viewvc/chrome/trunk/src/third_party/libxml/src \
+/include/libxml/tree.h?r1=56276&r2=149930
+
+libxml2 2.9.0-rc1 and earlier, as used in Google Chrome before 21.0.1180.89,
+does not properly support a cast of an unspecified variable during handling
+of XSL transforms, which allows remote attackers to cause a denial of service
+or possibly have unknown other impact via a crafted document, related to the
+_xmlNs data structure in include/libxml/tree.h.
+
+http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-2871
+
+Signed-off-by: Li Wang <li.wang@windriver.com>
+---
+ include/libxml/tree.h |    1 +
+ 1 files changed, 1 insertions(+), 0 deletions(-)
+
+diff --git a/include/libxml/tree.h b/include/libxml/tree.h
+index b733589..5422dda 100644
+--- a/include/libxml/tree.h
++++ b/include/libxml/tree.h
+@@ -351,6 +351,7 @@ struct _xmlNs {
+     struct _xmlNs  *next;	/* next Ns link for this node  */
+     xmlNsType      type;	/* global or local */
+     const xmlChar *href;	/* URL for the namespace */
++    const char *dummy_children;	/* lines up with node->children */
+     const xmlChar *prefix;	/* prefix for the namespace */
+     void           *_private;   /* application data */
+     struct _xmlDoc *context;		/* normally an xmlDoc */
+-- 
+1.7.0.5
+

meta/recipes-core/libxml/libxml2_2.9.0.bb

@@ -1,6 +1,9 @@
 require libxml2.inc
 
-PR = "${INC_PR}.0"
+PR = "${INC_PR}.1"
 
 SRC_URI[md5sum] = "5b9bebf4f5d2200ae2c4efe8fa6103f7"
 SRC_URI[sha256sum] = "ad25d91958b7212abdc12b9611cfb4dc4e5cddb6d1e9891532f48aacee422b82"
+
+SRC_URI += "file://libxml2-CVE-2012-2871.patch \
+	   "