| diff --git a/third_party/libopenjpeg20/tcd.c b/third_party/libopenjpeg20/tcd.c |
| index be3b84363..5757fd401 100644 |
| --- a/third_party/libopenjpeg20/tcd.c |
| +++ b/third_party/libopenjpeg20/tcd.c |
| @@ -1065,6 +1065,9 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no, |
| l_current_precinct->ch = (OPJ_UINT32)((brcblkyend - tlcblkystart) >> |
| cblkheightexpn); |
| |
| + if (l_current_precinct->cw && ((OPJ_UINT32)-1) / l_current_precinct->cw < l_current_precinct->ch) { |
| + return OPJ_FALSE; |
| + } |
| l_nb_code_blocks = l_current_precinct->cw * l_current_precinct->ch; |
| /*fprintf(stderr, "\t\t\t\t precinct_cw = %d x recinct_ch = %d\n",l_current_precinct->cw, l_current_precinct->ch); */ |
| if ((((OPJ_UINT32) - 1) / (OPJ_UINT32)sizeof_block) < |
