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malloc-fail: Fix null deref in xmlSchemaParseWildcardNs

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Found with libFuzzer, see #344.
This commit is contained in:
Nick Wellnhofer 2023-03-05 14:09:14 +01:00
parent ba290a8663
commit e15838ab54
1 changed files with 2 additions and 0 deletions
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2
xmlschemas.c
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@ -6858,6 +6858,8 @@ xmlSchemaParseWildcardNs(xmlSchemaParserCtxtPtr ctxt,
*/ */
attr = xmlSchemaGetPropNode(node, "namespace"); attr = xmlSchemaGetPropNode(node, "namespace");
ns = xmlSchemaGetNodeContent(ctxt, (xmlNodePtr) attr); ns = xmlSchemaGetNodeContent(ctxt, (xmlNodePtr) attr);
if (ns == NULL)
return (-1);
if ((attr == NULL) || (xmlStrEqual(ns, BAD_CAST "##any"))) if ((attr == NULL) || (xmlStrEqual(ns, BAD_CAST "##any")))
wildc->any = 1; wildc->any = 1;
else if (xmlStrEqual(ns, BAD_CAST "##other")) { else if (xmlStrEqual(ns, BAD_CAST "##other")) {