third_party/libopenjpeg20/0006-tcd_init_tile.patch - Issue 1520203002: Fix a dividing zero bug in opj_tcd_init_tile()

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Side by Side Diff: third_party/libopenjpeg20/0006-tcd_init_tile.patch

Issue 1520203002: Fix a dividing zero bug in opj_tcd_init_tile() (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master

Patch Set: Rebase Created 5 years ago

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	1 diff --git a/third_party/libopenjpeg20/tcd.c b/third_party/libopenjpeg20/tcd.c

	2 index 2fccff1..aebe9be 100644

	3 --- a/third_party/libopenjpeg20/tcd.c

	4 +++ b/third_party/libopenjpeg20/tcd.c

	5 @@ -727,7 +727,10 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no,

	6 l_tilec->x1 = opj_int_ceildiv(l_tile->x1, (OPJ_INT32)l_image_com p->dx);

	7 l_tilec->y1 = opj_int_ceildiv(l_tile->y1, (OPJ_INT32)l_image_com p->dy);

	8 /fprintf(stderr, "\tTile compo border = %d,%d,%d,%d\n", l_tilec ->x0, l_tilec->y0,l_tilec->x1,l_tilec->y1);/

	9 -

	10 + if (l_tilec->x0 >= l_tilec->x1 \|\| l_tilec->y0 >= l_tilec->y1) {

	11 + opj_event_msg(manager, EVT_ERROR, "Invalid tile data\n") ;

	12 + return OPJ_FALSE;

	13 + }

	14 /* compute l_data_size with overflow check */

	15 l_data_size = (OPJ_UINT32)(l_tilec->x1 - l_tilec->x0);

	16 if ((((OPJ_UINT32)-1) / l_data_size) < (OPJ_UINT32)(l_tilec->y1 - l_tilec->y0)) {

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