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| author | gogil <gogil@stealien.com> | 2016-08-04 16:48:04 -0700 |
|---|---|---|
| committer | Commit bot <commit-bot@chromium.org> | 2016-08-04 16:48:04 -0700 |
| commit | ff74356915d4c7f7c6eb16de1e9f403da4ecb6d5 (patch) | |
| tree | a73676ece147df315ef9699d4e10cd8cfe929b94 /third_party/libopenjpeg20/0019-tcd_init_tile.patch | |
| parent | 1b4f6b36b3ed8d1f6cea96bc32c1b376f4a499bc (diff) | |
| download | pdfium-ff74356915d4c7f7c6eb16de1e9f403da4ecb6d5.tar.xz | |
openjpeg: Prevent integer overflows during calculation of |l_nb_code_blocks_size|
BUG=628890
R=ochang@chromium.org
Review-Url: https://codereview.chromium.org/2212973002
Diffstat (limited to 'third_party/libopenjpeg20/0019-tcd_init_tile.patch')
| -rw-r--r-- | third_party/libopenjpeg20/0019-tcd_init_tile.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/third_party/libopenjpeg20/0019-tcd_init_tile.patch b/third_party/libopenjpeg20/0019-tcd_init_tile.patch new file mode 100644 index 0000000000..d8e18facc9 --- /dev/null +++ b/third_party/libopenjpeg20/0019-tcd_init_tile.patch @@ -0,0 +1,30 @@ +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) { |