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poppler.30722
CVE-2022-38784.patch
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File CVE-2022-38784.patch of Package poppler.30722
diff --git a/poppler/JBIG2Stream.cc b/poppler/JBIG2Stream.cc index 662276e547eb223b1c525057ada2e06dea925b7c..9f70431de49e7acbebc540104da8699eda20acc8 100644 --- a/poppler/JBIG2Stream.cc +++ b/poppler/JBIG2Stream.cc @@ -1976,7 +1976,11 @@ void JBIG2Stream::readTextRegionSeg(unsigned int segNum, bool imm, bool lossless for (i = 0; i < nRefSegs; ++i) { if ((seg = findSegment(refSegs[i]))) { if (seg->getType() == jbig2SegSymbolDict) { - numSyms += ((JBIG2SymbolDict *)seg)->getSize(); + const unsigned int segSize = ((JBIG2SymbolDict *)seg)->getSize(); + if (unlikely(checkedAdd(numSyms, segSize, &numSyms))) { + error(errSyntaxError, getPos(), "Too many symbols in JBIG2 text region"); + return; + } } else if (seg->getType() == jbig2SegCodeTable) { codeTables.push_back(seg); }
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