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malloc-fail: Fix null deref in xmlXPathCompiledEvalInternal

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Found with libFuzzer, see #344.
This commit is contained in:
Nick Wellnhofer
2023-02-26 14:33:16 +01:00
parent 0f112d0289
commit 70b21c9f2a
1 changed files with 2 additions and 0 deletions
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xpath.c
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@@ -14370,6 +14370,8 @@ xmlXPathCompiledEvalInternal(xmlXPathCompExprPtr comp,
} }
#endif #endif
pctxt = xmlXPathCompParserContext(comp, ctxt); pctxt = xmlXPathCompParserContext(comp, ctxt);
if (pctxt == NULL)
return(-1);
res = xmlXPathRunEval(pctxt, toBool); res = xmlXPathRunEval(pctxt, toBool);
if (pctxt->error != XPATH_EXPRESSION_OK) { if (pctxt->error != XPATH_EXPRESSION_OK) {