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-rw-r--r--libhb/dvd.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/libhb/dvd.c b/libhb/dvd.c
index 358cb552b..479157e8a 100644
--- a/libhb/dvd.c
+++ b/libhb/dvd.c
@@ -203,9 +203,19 @@ hb_title_t * hb_dvd_title_scan( hb_dvd_t * d, int t )
/* Position of the title in the VTS */
title->ttn = d->vmg->tt_srpt->title[t-1].vts_ttn;
+ if ( title->ttn < 1 || title->ttn > vts->vts_ptt_srpt->nr_of_srpts )
+ {
+ hb_error( "invalid VTS PTT offset %d for title %d, skipping", title->ttn, t );
+ goto fail;
+ }
/* Get pgc */
pgc_id = vts->vts_ptt_srpt->title[title->ttn-1].ptt[0].pgcn;
+ if ( pgc_id < 1 || pgc_id > vts->vts_pgcit->nr_of_pgci_srp )
+ {
+ hb_error( "invalid PGC ID %d for title %d, skipping", pgc_id, t );
+ goto fail;
+ }
pgn = vts->vts_ptt_srpt->title[title->ttn-1].ptt[0].pgn;
d->pgc = vts->vts_pgcit->pgci_srp[pgc_id-1].pgc;