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Avoid undefined shift behaviour if bit depth == 32 (#895) 

Fixes openjeg-crashes-2017-07-27/id:000000,sig:11,src:003798,op:ext_AO,pos:128.jp2
This commit is contained in:
Even Rouault 2017-07-27 22:29:17 +02:00
parent 820fcfe8bb
commit e03e947466
1 changed files with 4 additions and 4 deletions
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8
src/lib/openjp2/j2k.c
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@ -2234,9 +2234,9 @@ static OPJ_BOOL opj_j2k_read_siz(opj_j2k_t *p_j2k,
/* Avoids later undefined shift in computation of */
/* p_j2k->m_specific_param.m_decoder.m_default_tcp->tccps[i].m_dc_level_shift = 1
<< (l_image->comps[i].prec - 1); */
if (l_img_comp->prec > 32) {
if (l_img_comp->prec > 31) {
opj_event_msg(p_manager, EVT_ERROR,
"Invalid values for comp = %d : prec=%u (should be between 1 and 38 according to the JPEG2000 norm. OpenJpeg only supports up to 32)\n",
"Invalid values for comp = %d : prec=%u (should be between 1 and 38 according to the JPEG2000 norm. OpenJpeg only supports up to 31)\n",
i, l_img_comp->prec);
return OPJ_FALSE;
}
@ -6271,9 +6271,9 @@ static OPJ_BOOL opj_j2k_read_cbd(opj_j2k_t *p_j2k,
l_comp->sgnd = (l_comp_def >> 7) & 1;
l_comp->prec = (l_comp_def & 0x7f) + 1;
if (l_comp->prec > 32) {
if (l_comp->prec > 31) {
opj_event_msg(p_manager, EVT_ERROR,
"Invalid values for comp = %d : prec=%u (should be between 1 and 38 according to the JPEG2000 norm. OpenJpeg only supports up to 32)\n",
"Invalid values for comp = %d : prec=%u (should be between 1 and 38 according to the JPEG2000 norm. OpenJpeg only supports up to 31)\n",
i, l_comp->prec);
return OPJ_FALSE;
}