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opj_j2k_setup_encoder(): validate number of tiles to avoid illegal values and potential overflow (fixes #1399)

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Even Rouault 2022-01-18 15:44:18 +01:00
parent a1eec9c49e
commit 70f5e0a0df
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1 changed files with 7 additions and 0 deletions
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7
src/lib/openjp2/j2k.c
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@ -7953,6 +7953,13 @@ OPJ_BOOL opj_j2k_setup_encoder(opj_j2k_t *p_j2k,
(OPJ_INT32)cp->tdx); (OPJ_INT32)cp->tdx);
cp->th = (OPJ_UINT32)opj_int_ceildiv((OPJ_INT32)(image->y1 - cp->ty0), cp->th = (OPJ_UINT32)opj_int_ceildiv((OPJ_INT32)(image->y1 - cp->ty0),
(OPJ_INT32)cp->tdy); (OPJ_INT32)cp->tdy);
/* Check that the number of tiles is valid */
if (cp->tw > 65535 / cp->th) {
opj_event_msg(p_manager, EVT_ERROR,
"Invalid number of tiles : %u x %u (maximum fixed by jpeg2000 norm is 65535 tiles)\n",
cp->tw, cp->th);
return OPJ_FALSE;
}
} else { } else {
cp->tdx = image->x1 - cp->tx0; cp->tdx = image->x1 - cp->tx0;
cp->tdy = image->y1 - cp->ty0; cp->tdy = image->y1 - cp->ty0;