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djvulibre
djvulibre-CVE-2019-18804.patch
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File djvulibre-CVE-2019-18804.patch of Package djvulibre
--- a/libdjvu/IW44EncodeCodec.cpp +++ a/libdjvu/IW44EncodeCodec.cpp @@ -405,7 +405,7 @@ filter_fv(short *p, int w, int h, int rowsize, int scale) int y = 0; int s = scale*rowsize; int s3 = s+s+s; - h = ((h-1)/scale)+1; + h = (h>0) ? ((h-1)/scale)+1 : 0; y += 1; p += s; while (y-3 < h) --- a/tools/ddjvu.cpp +++ a/tools/ddjvu.cpp @@ -279,7 +279,7 @@ render(ddjvu_page_t *page, int pageno) prect.h = (ih * 100) / dpi; } /* Process aspect ratio */ - if (flag_aspect <= 0) + if (flag_aspect <= 0 && iw>0 && ih>0) { double dw = (double)iw / prect.w; double dh = (double)ih / prect.h;
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