Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Add overflow check in opj_tcd_init_tile #819

Merged
merged 2 commits into from
Sep 6, 2016
Merged

Add overflow check in opj_tcd_init_tile #819

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
7f6b782
Add overflow check in opj_tcd_init_tile
mayeut Sep 5, 2016
3864ba7
Add some events in case of overflow
mayeut Sep 5, 2016
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
17 changes: 14 additions & 3 deletions src/lib/openjp2/tcd.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -808,12 +808,22 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no,
l_br_prc_y_end = opj_int_ceildivpow2(l_res->y1, (OPJ_INT32)l_pdy) << l_pdy;
/*fprintf(stderr, "\t\t\tprc_x_start=%d, prc_y_start=%d, br_prc_x_end=%d, br_prc_y_end=%d \n", l_tl_prc_x_start, l_tl_prc_y_start, l_br_prc_x_end ,l_br_prc_y_end );*/

l_res->pw = (l_res->x0 == l_res->x1) ? 0 : (OPJ_UINT32)((l_br_prc_x_end - l_tl_prc_x_start) >> l_pdx);
l_res->ph = (l_res->y0 == l_res->y1) ? 0 : (OPJ_UINT32)((l_br_prc_y_end - l_tl_prc_y_start) >> l_pdy);
l_res->pw = (l_res->x0 == l_res->x1) ? 0U : (OPJ_UINT32)((l_br_prc_x_end - l_tl_prc_x_start) >> l_pdx);
l_res->ph = (l_res->y0 == l_res->y1) ? 0U : (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 != 0U) && ((((OPJ_UINT32)-1) / l_res->pw) < l_res->ph)) {
opj_event_msg(manager, EVT_ERROR, "Not enough memory for tile data\n");
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) {
opj_event_msg(manager, EVT_ERROR, "Not enough memory for tile data\n");
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;
tlcbgystart = l_tl_prc_y_start;
Expand Down Expand Up @@ -870,6 +880,7 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no,
if (!l_band->precincts && (l_nb_precincts > 0U)) {
l_band->precincts = (opj_tcd_precinct_t *) opj_malloc( /*3 * */ l_nb_precinct_size);
if (! l_band->precincts) {
opj_event_msg(manager, EVT_ERROR, "Not enough memory to handle band precints\n");
return OPJ_FALSE;
}
/*fprintf(stderr, "\t\t\t\tAllocate precincts of a band (opj_tcd_precinct_t): %d\n",l_nb_precinct_size); */
Expand Down