poppler/JBIG2Stream.cc | 4 ++++
1 file changed, 4 insertions(+)
New commits:
commit bf6909d2d9dc82d3014ce7659469c8e1cc37694c
Author: Albert Astals Cid <[email protected]>
Date: Sun Nov 15 21:51:25 2020 +0100
JBIG2Stream::readSymbolDictSeg: Return early if one of the bitmaps is null
Doesn't seem to regress any of the valid files i have and saves some
very small looping for hours
diff --git a/poppler/JBIG2Stream.cc b/poppler/JBIG2Stream.cc
index d02e5fc5..f267f413 100644
--- a/poppler/JBIG2Stream.cc
+++ b/poppler/JBIG2Stream.cc
@@ -1741,6 +1741,10 @@ bool JBIG2Stream::readSymbolDictSeg(unsigned int segNum,
unsigned int length, un
} else {
bitmaps[numInputSyms + i] = readTextRegion(huff, true,
symWidth, symHeight, refAggNum, 0, numInputSyms + i, nullptr, symCodeLen,
bitmaps, 0, 0, 0, 1, 0, huffTableF, huffTableH, huffTableK, huffTableO,
huffTableO,
huffTableO,
huffTableO, huffTableA, sdrTemplate, sdrATX, sdrATY);
+ if (unlikely(!bitmaps[numInputSyms + i])) {
+ error(errSyntaxError, curStr->getPos(), "NULL bitmap
in readTextRegion");
+ goto syntaxError;
+ }
}
// non-ref/agg coding
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