diff --git a/third_party/libopenjpeg20/tcd.c b/third_party/libopenjpeg20/tcd.c
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index 2fccff1..aebe9be 100644
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--- a/third_party/libopenjpeg20/tcd.c
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+++ b/third_party/libopenjpeg20/tcd.c
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@@ -727,7 +727,10 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no,
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l_tilec->x1 = opj_int_ceildiv(l_tile->x1, (OPJ_INT32)l_image_comp->dx);
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l_tilec->y1 = opj_int_ceildiv(l_tile->y1, (OPJ_INT32)l_image_comp->dy);
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/*fprintf(stderr, "\tTile compo border = %d,%d,%d,%d\n", l_tilec->x0, l_tilec->y0,l_tilec->x1,l_tilec->y1);*/
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-
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+ if (l_tilec->x0 >= l_tilec->x1 || l_tilec->y0 >= l_tilec->y1) {
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+ opj_event_msg(manager, EVT_ERROR, "Invalid tile data\n");
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+ return OPJ_FALSE;
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+ }
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/* compute l_data_size with overflow check */
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l_data_size = (OPJ_UINT32)(l_tilec->x1 - l_tilec->x0);
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if ((((OPJ_UINT32)-1) / l_data_size) < (OPJ_UINT32)(l_tilec->y1 - l_tilec->y0)) {
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