From d0c721cad7e5e90904b0112ba56be28c35fe4394 Mon Sep 17 00:00:00 2001 From: Su Laus Date: Sat, 6 May 2023 18:45:50 +0000 Subject: tif_ojpeg.c fix 554 by checking for division by zero --- libtiff/tif_ojpeg.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libtiff/tif_ojpeg.c b/libtiff/tif_ojpeg.c index 0c915de2..ea572091 100644 --- a/libtiff/tif_ojpeg.c +++ b/libtiff/tif_ojpeg.c @@ -1360,6 +1360,9 @@ static int OJPEGWriteHeaderInfo(TIFF *tif) { assert(sp->subsampling_convert_ycbcrbuf == 0); assert(sp->subsampling_convert_ycbcrimage == 0); + /* Check for division by zero. */ + if (sp->subsampling_hor == 0 || sp->subsampling_ver == 0) + return (0); sp->subsampling_convert_ylinelen = ((sp->strile_width + sp->subsampling_hor * 8 - 1) / (sp->subsampling_hor * 8) * sp->subsampling_hor * 8); -- cgit v1.2.1