| diff --git a/third_party/libopenjpeg20/README.pdfium b/third_party/libopenjpeg20/README.pdfium |
| index a9e289d..b1012af 100644 |
| --- a/third_party/libopenjpeg20/README.pdfium |
| +++ b/third_party/libopenjpeg20/README.pdfium |
| @@ -28,4 +28,5 @@ Local Modifications: |
| 0016-read_SQcd_SQcc_overflow.patch: Prevent a buffer overflow in opj_j2k_read_SQcd_SQcc. |
| 0017-tcd_init_tile.patch: Prevent integer overflows during calculation of |l_nb_precinct_size|. |
| 0018-tcd_get_decoded_tile_size.patch: Fix an integer overflow in opj_tcd_get_decoded_tile_size. |
| +0019-tcd_init_tile.patch: Prevent integer overflows during calculation of |l_nb_code_blocks_size|. |
| TODO(thestig): List all the other patches. |
| diff --git a/third_party/libopenjpeg20/tcd.c b/third_party/libopenjpeg20/tcd.c |
| index cd1c439..9270efe 100644 |
| --- a/third_party/libopenjpeg20/tcd.c |
| +++ b/third_party/libopenjpeg20/tcd.c |
| @@ -939,8 +939,15 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no, |
| l_current_precinct->cw = (OPJ_UINT32)((brcblkxend - tlcblkxstart) >> cblkwidthexpn); |
| 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 < l_nb_code_blocks) { |
| + return OPJ_FALSE; |
| + } |
| l_nb_code_blocks_size = l_nb_code_blocks * (OPJ_UINT32)sizeof_block; |
| |
| if (! l_current_precinct->cblks.blocks) { |
