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diff -Naur libdvdread.orig/src/ifo_read.c libdvdread/src/ifo_read.c
--- libdvdread.orig/src/ifo_read.c 2009-01-08 14:57:10.000000000 -0800
+++ libdvdread/src/ifo_read.c 2009-06-27 13:22:27.940241400 -0700
@@ -1914,6 +1914,13 @@
CHECK_VALUE(pgci_ut->nr_of_lus < 100); /* ?? 3-4 ? */
CHECK_VALUE((uint32_t)pgci_ut->nr_of_lus * PGCI_LU_SIZE < pgci_ut->last_byte);
+ if (pgci_ut->nr_of_lus == 0 || pgci_ut->nr_of_lus >= 100)
+ {
+ free(pgci_ut);
+ ifofile->pgci_ut = 0;
+ return 0;
+ }
+
info_length = pgci_ut->nr_of_lus * PGCI_LU_SIZE;
data = malloc(info_length);
if(!data) {
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