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| author | ochang <ochang@chromium.org> | 2016-07-06 17:02:35 -0700 |
|---|---|---|
| committer | Commit bot <commit-bot@chromium.org> | 2016-07-06 17:02:35 -0700 |
| commit | 2f6d1480a1be2b1f82c94219c2d99e67d7e0660d (patch) | |
| tree | 89bc9abb01000038e6ad2470ebac03638be339e2 /third_party/libopenjpeg20/tcd.c | |
| parent | 7e6a8484b05819268b4e7f0350cebfb704c6d18c (diff) | |
| download | pdfium-2f6d1480a1be2b1f82c94219c2d99e67d7e0660d.tar.xz | |
openjpeg: Prevent integer overflows during calculation of |l_nb_precinct_size|
BUG=625541
Review-Url: https://codereview.chromium.org/2124073003
Diffstat (limited to 'third_party/libopenjpeg20/tcd.c')
| -rw-r--r-- | third_party/libopenjpeg20/tcd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/third_party/libopenjpeg20/tcd.c b/third_party/libopenjpeg20/tcd.c index aebe9be96c..673633c09b 100644 --- a/third_party/libopenjpeg20/tcd.c +++ b/third_party/libopenjpeg20/tcd.c @@ -822,7 +822,14 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no, l_res->ph = (l_res->y0 == l_res->y1) ? 0 : (OPJ_UINT32)((l_br_prc_y_end - l_tl_prc_y_start) >> l_pdy); /*fprintf(stderr, "\t\t\tres_pw=%d, res_ph=%d\n", l_res->pw, l_res->ph );*/ + if (l_res->pw && ((OPJ_UINT32)-1) / l_res->pw < l_res->ph) { + return OPJ_FALSE; + } l_nb_precincts = l_res->pw * l_res->ph; + + if (((OPJ_UINT32)-1) / (OPJ_UINT32)sizeof(opj_tcd_precinct_t) < l_nb_precincts) { + return OPJ_FALSE; + } l_nb_precinct_size = l_nb_precincts * (OPJ_UINT32)sizeof(opj_tcd_precinct_t); if (resno == 0) { tlcbgxstart = l_tl_prc_x_start; |