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Fix memory leak in xmlParseBalancedChunkMemoryRecover

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When doc is NULL, namespace created in xmlTreeEnsureXMLDecl
is bind to newDoc->oldNs, in this case, set newDoc->oldNs to
NULL and free newDoc will cause a memory leak.

Found with libFuzzer.

Closes #82.
This commit is contained in:
Zhipeng Xie
2019-08-07 17:39:17 +08:00
committed by Nick Wellnhofer
parent 09b6f8183d
commit 5a02583c7e
1 changed files with 2 additions and 1 deletions
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3
parser.c
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@@ -13894,7 +13894,8 @@ xmlParseBalancedChunkMemoryRecover(xmlDocPtr doc, xmlSAXHandlerPtr sax,
xmlFreeParserCtxt(ctxt); xmlFreeParserCtxt(ctxt);
newDoc->intSubset = NULL; newDoc->intSubset = NULL;
newDoc->extSubset = NULL; newDoc->extSubset = NULL;
newDoc->oldNs = NULL; if(doc != NULL)
newDoc->oldNs = NULL;
xmlFreeDoc(newDoc); xmlFreeDoc(newDoc);
return(ret); return(ret);