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poppler-qt5.30681
poppler-CVE-2020-23804.patch
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File poppler-CVE-2020-23804.patch of Package poppler-qt5.30681
Index: poppler-0.79.0/poppler/XRef.cc =================================================================== --- poppler-0.79.0.orig/poppler/XRef.cc +++ poppler-0.79.0/poppler/XRef.cc @@ -634,6 +634,12 @@ bool XRef::readXRefTable(Parser *parser, ok = false; } } + // Arbitrary limit because otherwise we exhaust the stack + // calling readXRef + readXRefTable + if (followedXRefStm->size() > 4096) { + error(errSyntaxError, -1, "File has more than 4096 XRefStm, aborting"); + ok = false; + } if (ok) { followedXRefStm->push_back(pos2); readXRef(&pos2, followedXRefStm, xrefStreamObjsNum);
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