--- filters/kword/pdf/xpdf/xpdf/Stream.cc
+++ filters/kword/pdf/xpdf/xpdf/Stream.cc
@@ -413,13 +413,11 @@ StreamPredictor::StreamPredictor(Stream
predLine = NULL;
ok = gFalse;
- if (width <= 0 || nComps <= 0 || nBits <= 0 ||
- nComps >= INT_MAX / nBits ||
- width >= INT_MAX / nComps / nBits)
- return;
-
nVals = width * nComps;
- if (nVals * nBits + 7 <= 0)
+ if (width <= 0 || nComps <= 0 || nBits <= 0 ||
+ nComps >= 4 || nBits > 16 ||
+ width >= INT_MAX / nComps ||
+ nVals >= (INT_MAX - 7) / nBits)
return;
pixBytes = (nComps * nBits + 7) >> 3;
