1 files changed, 40 insertions, 0 deletions

diff --git a/meta/recipes-core/libxml/libxml2/libxml2-CVE-2017-0663.patch b/meta/recipes-core/libxml/libxml2/libxml2-CVE-2017-0663.patch
new file mode 100644
index 0000000000..0108265855
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/libxml2-CVE-2017-0663.patch
@@ -0,0 +1,40 @@
+libxml2: Fix CVE-2017-0663
+
+[No upstream tracking] -- https://bugzilla.gnome.org/show_bug.cgi?id=780228
+
+valid: Fix type confusion in xmlValidateOneNamespace
+
+Comment out code that casts xmlNsPtr to xmlAttrPtr. ID types
+on namespace declarations make no practical sense anyway.
+
+Fixes bug 780228
+
+Upstream-Status: Backport [https://git.gnome.org/browse/libxml2/commit/?id=92b9e8c8b3787068565a1820ba575d042f9eec66]
+CVE: CVE-2017-0663
+Signed-off-by: Andrej Valek <andrej.valek@siemens.com>
+
+diff --git a/valid.c b/valid.c
+index 19f84b8..e03d35e 100644
+--- a/valid.c
++++ b/valid.c
+@@ -4621,6 +4621,12 @@ xmlNodePtr elem, const xmlChar *prefix, xmlNsPtr ns, const xmlChar *value) {
+        }
+     }
+ 
++    /*
++     * Casting ns to xmlAttrPtr is wrong. We'd need separate functions
++     * xmlAddID and xmlAddRef for namespace declarations, but it makes
++     * no practical sense to use ID types anyway.
++     */
++#if 0
+     /* Validity Constraint: ID uniqueness */
+     if (attrDecl->atype == XML_ATTRIBUTE_ID) {
+         if (xmlAddID(ctxt, doc, value, (xmlAttrPtr) ns) == NULL)
+@@ -4632,6 +4638,7 @@ xmlNodePtr elem, const xmlChar *prefix, xmlNsPtr ns, const xmlChar *value) {
+         if (xmlAddRef(ctxt, doc, value, (xmlAttrPtr) ns) == NULL)
+            ret = 0;
+     }
++#endif
+ 
+     /* Validity Constraint: Notation Attributes */
+     if (attrDecl->atype == XML_ATTRIBUTE_NOTATION) {