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authorAndrej Valek <andrej.valek@siemens.com>2016-12-12 14:20:21 +0100
committerRichard Purdie <richard.purdie@linuxfoundation.org>2016-12-16 08:30:02 +0000
commit8f3008114d5000a0865f50833db7c3a3f9808601 (patch)
tree8062e2937b3be7a983a125b82c4af762c8b0c74c /meta/recipes-core/libxml
parent00e928bd1c2aed9caeaf9e411743805d2139a023 (diff)
downloadopenembedded-core-contrib-8f3008114d5000a0865f50833db7c3a3f9808601.tar.gz
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libxml2: Fix more NULL pointer derefs
The NULL pointer dereferencing could produced some security problems. This is a preventive security fix. Signed-off-by: Andrej Valek <andrej.valek@siemens.com> Signed-off-by: Pascal Bach <pascal.bach@siemens.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
Diffstat (limited to 'meta/recipes-core/libxml')
-rw-r--r--meta/recipes-core/libxml/libxml2/libxml2-fix_NULL_pointer_derefs.patch46
-rw-r--r--meta/recipes-core/libxml/libxml2_2.9.4.bb1
2 files changed, 47 insertions, 0 deletions
diff --git a/meta/recipes-core/libxml/libxml2/libxml2-fix_NULL_pointer_derefs.patch b/meta/recipes-core/libxml/libxml2/libxml2-fix_NULL_pointer_derefs.patch
new file mode 100644
index 0000000000..83552ca3ec
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/libxml2-fix_NULL_pointer_derefs.patch
@@ -0,0 +1,46 @@
+libxml2-2.9.4: Fix more NULL pointer derefs
+
+xpointer: Fix more NULL pointer derefs
+
+Upstream-Status: Backported [https://git.gnome.org/browse/libxml2/commit/?id=e905f08123e4a6e7731549e6f09dadff4cab65bd]
+CVE: -
+Signed-off-by: Andrej Valek <andrej.valek@siemens.com>
+Signed-off-by: Pascal Bach <pascal.bach@siemens.com>
+
+diff --git a/xpointer.c b/xpointer.c
+index 676c510..074db24 100644
+--- a/xpointer.c
++++ b/xpointer.c
+@@ -555,7 +555,7 @@ xmlXPtrNewRangeNodeObject(xmlNodePtr start, xmlXPathObjectPtr end) {
+ /*
+ * Empty set ...
+ */
+- if (end->nodesetval->nodeNr <= 0)
++ if ((end->nodesetval == NULL) || (end->nodesetval->nodeNr <= 0))
+ return(NULL);
+ break;
+ default:
+@@ -1400,7 +1400,7 @@ xmlXPtrEval(const xmlChar *str, xmlXPathContextPtr ctx) {
+ */
+ xmlNodeSetPtr set;
+ set = tmp->nodesetval;
+- if ((set->nodeNr != 1) ||
++ if ((set == NULL) || (set->nodeNr != 1) ||
+ (set->nodeTab[0] != (xmlNodePtr) ctx->doc))
+ stack++;
+ } else
+@@ -2073,9 +2073,11 @@ xmlXPtrRangeFunction(xmlXPathParserContextPtr ctxt, int nargs) {
+ xmlXPathFreeObject(set);
+ XP_ERROR(XPATH_MEMORY_ERROR);
+ }
+- for (i = 0;i < oldset->locNr;i++) {
+- xmlXPtrLocationSetAdd(newset,
+- xmlXPtrCoveringRange(ctxt, oldset->locTab[i]));
++ if (oldset != NULL) {
++ for (i = 0;i < oldset->locNr;i++) {
++ xmlXPtrLocationSetAdd(newset,
++ xmlXPtrCoveringRange(ctxt, oldset->locTab[i]));
++ }
+ }
+
+ /*
diff --git a/meta/recipes-core/libxml/libxml2_2.9.4.bb b/meta/recipes-core/libxml/libxml2_2.9.4.bb
index a1d1e9e12d..ba08c9c994 100644
--- a/meta/recipes-core/libxml/libxml2_2.9.4.bb
+++ b/meta/recipes-core/libxml/libxml2_2.9.4.bb
@@ -22,6 +22,7 @@ SRC_URI = "ftp://xmlsoft.org/libxml2/libxml2-${PV}.tar.gz;name=libtar \
file://libxml2-fix_node_comparison.patch \
file://libxml2-CVE-2016-5131.patch \
file://libxml2-CVE-2016-4658.patch \
+ file://libxml2-fix_NULL_pointer_derefs.patch \
"
SRC_URI[libtar.md5sum] = "ae249165c173b1ff386ee8ad676815f5"