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SUSE:SLE-15-SP2:GA
python-libxml2-python.13658
libxml2-CVE-2019-19956.patch
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File libxml2-CVE-2019-19956.patch of Package python-libxml2-python.13658
From 5a02583c7e683896d84878bd90641d8d9b0d0549 Mon Sep 17 00:00:00 2001 From: Zhipeng Xie <xiezhipeng1@huawei.com> Date: Wed, 7 Aug 2019 17:39:17 +0800 Subject: [PATCH] Fix memory leak in xmlParseBalancedChunkMemoryRecover 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. --- parser.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/parser.c b/parser.c index 1ce1ccf1..26d9f4e3 100644 --- a/parser.c +++ b/parser.c @@ -13894,7 +13894,8 @@ xmlParseBalancedChunkMemoryRecover(xmlDocPtr doc, xmlSAXHandlerPtr sax, xmlFreeParserCtxt(ctxt); newDoc->intSubset = NULL; newDoc->extSubset = NULL; - newDoc->oldNs = NULL; + if(doc != NULL) + newDoc->oldNs = NULL; xmlFreeDoc(newDoc); return(ret); -- 2.24.1
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