[Open-scap] [PATCH] fixing extended definition segfault

[Shawn Wells]

after three days of an SCAP conference, in which multiple whiskeys were
had, I mistyped an extended definition and crashed openscap. whoops.
---
 src/OVAL/oval_probe.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/OVAL/oval_probe.c b/src/OVAL/oval_probe.c
index 12ac4b8..16d09b8 100644
--- a/src/OVAL/oval_probe.c
+++ b/src/OVAL/oval_probe.c
@@ -439,6 +439,11 @@ static int oval_probe_query_criteria(oval_probe_session_t *sess, struct oval_cri
         case OVAL_NODETYPE_EXTENDDEF:{
                         struct oval_definition *oval_def = oval_criteria_node_get_definition(cnode);
 			struct oval_criteria_node *node =  oval_definition_get_criteria(oval_def);
+			if (node == NULL) {
+				oscap_seterr(OSCAP_EFAMILY_OSCAP, "Could not find extended definition: %s.",
+					oval_definition_get_id(oval_def));
+				return -1;
+			}
                         return oval_probe_query_criteria(sess, node);
                 }
                 break;
-- 
1.9.3