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1diff --git a/third_party/libopenjpeg20/tcd.c b/third_party/libopenjpeg20/tcd.c
2index 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_comp->dx);
7 		l_tilec->y1 = opj_int_ceildiv(l_tile->y1, (OPJ_INT32)l_image_comp->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)) {
17