Fix segfault in error handling for cpe_item_parse

Fixes OpenSCAP#2285

Author: Mab879

src/CPE/cpedict_priv.c

@@ -736,9 +736,15 @@ struct cpe_item *cpe_item_parse(struct cpe_parser_ctx *ctx)
 			} else if (xmlStrcmp(xmlTextReaderConstLocalName(reader), TAG_ITEM_METADATA_STR) == 0) {
 				data = (char *)xmlTextReaderGetAttribute(reader, ATTR_MODIFICATION_DATE_STR);
 				if ((data == NULL) || ((ret->metadata = cpe_item_metadata_new()) == NULL)) {
-					oscap_seterr(OSCAP_EFAMILY_OSCAP,
-							"Failed to parse item-metadata element within cpe-item/@name='%s'",
-							cpe_name_get_as_str(ret->name));
+					if (ret->name != NULL) {
+						oscap_seterr(OSCAP_EFAMILY_OSCAP,
+								"Failed to parse item-metadata element within cpe-item/@name='%s'",
+								cpe_name_get_as_str(ret->name));
+					} else {
+						oscap_seterr(OSCAP_EFAMILY_OSCAP,
+							"Failed to parse item-metadata element within cpe-item");
+
+					}
 					cpe_item_free(ret);
 					free(data);
 					return NULL;

tests/CPE/CMakeLists.txt

@@ -1 +1,2 @@
 add_oscap_test("all.sh")
+add_oscap_test("openscap_2285_regression.sh")

tests/CPE/openscap_2285_regression.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+$OSCAP info "${top_srcdir}/tests/CPE/openscap_2285_regression.xml"
+

tests/CPE/openscap_2285_regression.xml

@@ -0,0 +1,11 @@
+<?xml version='1.0' encoding='cp1250'?>
+<cpe-list xmlns="http://cpe.mit�e.org/dictionary/2.0" xmxsi="httce" xmlns:meta="0.2" xsiion="httd">
+<generator>
+<product_name>NaVD)</product_name>
+    <product_version>T)</product_version> <schema_version>2.1</schema_version>
+    <timestamp>200</timestamp> </generator>
+    <cpe-item nameerator="OR" n="cpe:/a:-com:3c15100d"> <title lang="en-US">�luk�</title>
+    <meta:item-metadata s="2044" />
+    </cpe-item>
+
+</cpe-list>