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Fix leak & invalid behavior of opj_jp2_read_ihdr (#818) 

In case multiple ihdr box are present, only the first one shall be
taken into account.
This commit is contained in:
Matthieu Darbois 2016-09-06 01:31:15 +02:00 committed by GitHub
parent ccd9ced49e
commit d7e6b7de8a
1 changed files with 11 additions and 3 deletions
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14
src/lib/openjp2/jp2.c
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@ -552,6 +552,11 @@ static OPJ_BOOL opj_jp2_read_ihdr( opj_jp2_t *jp2,
assert(jp2 != 00);
assert(p_manager != 00);
if (jp2->comps != NULL) {
opj_event_msg(p_manager, EVT_WARNING, "Ignoring ihdr box. First ihdr box already read\n");
return OPJ_TRUE;
}
if (p_image_header_size != 14) {
opj_event_msg(p_manager, EVT_ERROR, "Bad image header box (bad size)\n");
return OPJ_FALSE;
@ -564,6 +569,11 @@ static OPJ_BOOL opj_jp2_read_ihdr( opj_jp2_t *jp2,
opj_read_bytes(p_image_header_data,&(jp2->numcomps),2); /* NC */
p_image_header_data += 2;
if ((jp2->numcomps - 1U) >= 16384U) { /* unsigned underflow is well defined: 1U <= jp2->numcomps <= 16384U */
opj_event_msg(p_manager, EVT_ERROR, "Invalid number of components (ihdr)\n");
return OPJ_FALSE;
}
/* allocate memory for components */
jp2->comps = (opj_jp2_comps_t*) opj_calloc(jp2->numcomps, sizeof(opj_jp2_comps_t));
if (jp2->comps == 0) {
@ -1764,7 +1774,7 @@ void opj_jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters)
/* further JP2 initializations go here */
jp2->color.jp2_has_colr = 0;
jp2->ignore_pclr_cmap_cdef = parameters->flags & OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG;
jp2->ignore_pclr_cmap_cdef = parameters->flags & OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG;
}
/* ----------------------------------------------------------------------- */
@ -1810,7 +1820,6 @@ OPJ_BOOL opj_jp2_setup_encoder( opj_jp2_t *jp2,
jp2->numcl = 1;
jp2->cl = (OPJ_UINT32*) opj_malloc(jp2->numcl * sizeof(OPJ_UINT32));
if (!jp2->cl){
jp2->cl = NULL;
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory when setup the JP2 encoder\n");
return OPJ_FALSE;
}
@ -1821,7 +1830,6 @@ OPJ_BOOL opj_jp2_setup_encoder( opj_jp2_t *jp2,
jp2->numcomps = image->numcomps; /* NC */
jp2->comps = (opj_jp2_comps_t*) opj_malloc(jp2->numcomps * sizeof(opj_jp2_comps_t));
if (!jp2->comps) {
jp2->comps = NULL;
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory when setup the JP2 encoder\n");
/* Memory of jp2->cl will be freed by opj_jp2_destroy */
return OPJ_FALSE;