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libxml2
Closed
Opened by Zhongyuan Zhou@zaneChou

There is a low probability that a NULL reference occur int v2.9.9.

In the source file xpath.c, at Line 8700, the function call to xmlXPathCacheConvertString(ctxt->context, obj) may return null pointer.

    8700   obj = xmlXPathCacheConvertString(ctxt->context, obj);
    8701   ret = xmlXPathGetElementsByIds(ctxt->context->doc, obj->stringval);

Zhe funtion of xmlXPathCacheConvertString(ctxt->context, obj) call to xmlXPathCacheNewCString(ctxt, "") may return null pointer.

    2682   return(xmlXPathCacheNewCString(ctxt, ""));
    2683   return(xmlXPathCacheWrapString(ctxt, res));

Zhe funtion of xmlXPathCacheNewCString(ctxt, "") call to xmlXPathNewCString(val) may return null pointer.

    2843    return(xmlXPathNewCString(val));

Zhe funtion of xmlXPathNewCString(val) may return null pointer.

    5343    return(NULL);
Edited by Zhongyuan Zhou