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-rw-r--r--meta/recipes-core/libxml/libxml2/libxml2-fix_node_comparison.patch67
-rw-r--r--meta/recipes-core/libxml/libxml2_2.9.4.bb1
2 files changed, 68 insertions, 0 deletions
diff --git a/meta/recipes-core/libxml/libxml2/libxml2-fix_node_comparison.patch b/meta/recipes-core/libxml/libxml2/libxml2-fix_node_comparison.patch
new file mode 100644
index 00000000000..11718bb2bdf
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/libxml2-fix_node_comparison.patch
@@ -0,0 +1,67 @@
+libxml2-2.9.4: Fix comparison with root node in xmlXPathCmpNodes and NULL pointer deref in XPointer
+
+xpath:
+ - Check for errors after evaluating first operand.
+ - Add sanity check for empty stack.
+ - Include comparation in changes from xmlXPathCmpNodesExt to xmlXPathCmpNodes
+
+Upstream-Status: Backported
+ - [https://git.gnome.org/browse/libxml2/commit/?id=c1d1f7121194036608bf555f08d3062a36fd344b]
+ - [https://git.gnome.org/browse/libxml2/commit/?id=a005199330b86dada19d162cae15ef9bdcb6baa8]
+CVE: necessary changes for fixing CVE-2016-5131
+Signed-off-by: Andrej Valek <andrej.valek@siemens.com>
+Signed-off-by: Pascal Bach <pascal.bach@siemens.com>
+
+diff --git a/result/XPath/xptr/viderror b/result/XPath/xptr/viderror
+new file mode 100644
+index 0000000..d589882
+--- /dev/null
++++ b/result/XPath/xptr/viderror
+@@ -0,0 +1,4 @@
++
++========================
++Expression: xpointer(non-existing-fn()/range-to(id('chapter2')))
++Object is empty (NULL)
+diff --git a/test/XPath/xptr/viderror b/test/XPath/xptr/viderror
+new file mode 100644
+index 0000000..da8c53b
+--- /dev/null
++++ b/test/XPath/xptr/viderror
+@@ -0,0 +1 @@
++xpointer(non-existing-fn()/range-to(id('chapter2')))
+diff --git a/xpath.c b/xpath.c
+index 113bce6..d992841 100644
+--- a/xpath.c
++++ b/xpath.c
+@@ -3342,13 +3342,13 @@ xmlXPathCmpNodes(xmlNodePtr node1, xmlNodePtr node2) {
+ * compute depth to root
+ */
+ for (depth2 = 0, cur = node2;cur->parent != NULL;cur = cur->parent) {
+- if (cur == node1)
++ if (cur->parent == node1)
+ return(1);
+ depth2++;
+ }
+ root = cur;
+ for (depth1 = 0, cur = node1;cur->parent != NULL;cur = cur->parent) {
+- if (cur == node2)
++ if (cur->parent == node2)
+ return(-1);
+ depth1++;
+ }
+@@ -14005,9 +14005,14 @@ xmlXPathCompOpEval(xmlXPathParserContextPtr ctxt, xmlXPathStepOpPtr op)
+ xmlNodeSetPtr oldset;
+ int i, j;
+
+- if (op->ch1 != -1)
++ if (op->ch1 != -1) {
+ total +=
+ xmlXPathCompOpEval(ctxt, &comp->steps[op->ch1]);
++ CHECK_ERROR0;
++ }
++ if (ctxt->value == NULL) {
++ XP_ERROR0(XPATH_INVALID_OPERAND);
++ }
+ if (op->ch2 == -1)
+ return (total);
+
diff --git a/meta/recipes-core/libxml/libxml2_2.9.4.bb b/meta/recipes-core/libxml/libxml2_2.9.4.bb
index 1fed90b07e2..66a89400e5b 100644
--- a/meta/recipes-core/libxml/libxml2_2.9.4.bb
+++ b/meta/recipes-core/libxml/libxml2_2.9.4.bb
@@ -19,6 +19,7 @@ SRC_URI = "ftp://xmlsoft.org/libxml2/libxml2-${PV}.tar.gz;name=libtar \
file://run-ptest \
file://python-sitepackages-dir.patch \
file://libxml-m4-use-pkgconfig.patch \
+ file://libxml2-fix_node_comparison.patch \
file://libxml2-CVE-2016-5131.patch \
"