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malloc-fail: Fix null deref in xmlSchemaParseUnion

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Found with libFuzzer, see #344.
This commit is contained in:
Nick Wellnhofer 2023-03-05 14:10:08 +01:00
parent 9afb6c5fb8
commit 31844c74df
1 changed files with 2 additions and 0 deletions
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2
xmlschemas.c
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@ -9017,6 +9017,8 @@ xmlSchemaParseUnion(xmlSchemaParserCtxtPtr ctxt, xmlSchemaPtr schema,
xmlSchemaQNameRefPtr ref;
cur = xmlSchemaGetNodeContent(ctxt, (xmlNodePtr) attr);
if (cur == NULL)
return (-1);
type->base = cur;
do {
while (IS_BLANK_CH(*cur))