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Add overflow check in opj_j2k_update_image_data (#817)

This commit is contained in:
Matthieu Darbois 2016-09-06 00:50:44 +02:00 committed by Mathieu Malaterre
parent c8fbf0f516
commit 98a97cef6b
1 changed files with 7 additions and 1 deletions
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8
src/lib/openjp2/j2k.c
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@ -8217,8 +8217,14 @@ static OPJ_BOOL opj_j2k_update_image_data (opj_tcd_t * p_tcd, OPJ_BYTE * p_data,
/* Allocate output component buffer if necessary */
if (!l_img_comp_dest->data) {
OPJ_SIZE_T l_width = l_img_comp_dest->w;
OPJ_SIZE_T l_height = l_img_comp_dest->h;
l_img_comp_dest->data = (OPJ_INT32*) opj_calloc((OPJ_SIZE_T)l_img_comp_dest->w * (OPJ_SIZE_T)l_img_comp_dest->h, sizeof(OPJ_INT32));
if ((l_height == 0U) || (l_width > (SIZE_MAX / l_height))) {
/* would overflow */
return OPJ_FALSE;
}
l_img_comp_dest->data = (OPJ_INT32*) opj_calloc(l_width * l_height, sizeof(OPJ_INT32));
if (! l_img_comp_dest->data) {
return OPJ_FALSE;
}