ncurses/ncurses-cve-2019-17594.patch

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From snapshot 6.1-20191012
diff --git a/ncurses/tinfo/comp_hash.c b/ncurses/tinfo/comp_hash.c
index 21f165ca..a62d38f9 100644
--- a/ncurses/tinfo/comp_hash.c
+++ b/ncurses/tinfo/comp_hash.c
@@ -63,7 +63,9 @@ _nc_find_entry(const char *string,
hashvalue = data->hash_of(string);
- if (data->table_data[hashvalue] >= 0) {
+ if (hashvalue >= 0
+ && (unsigned) hashvalue < data->table_size
+ && data->table_data[hashvalue] >= 0) {
real_table = _nc_get_table(termcap);
ptr = real_table + data->table_data[hashvalue];
@@ -96,7 +98,9 @@ _nc_find_type_entry(const char *string,
const HashData *data = _nc_get_hash_info(termcap);
int hashvalue = data->hash_of(string);
- if (data->table_data[hashvalue] >= 0) {
+ if (hashvalue >= 0
+ && (unsigned) hashvalue < data->table_size
+ && data->table_data[hashvalue] >= 0) {
const struct name_table_entry *const table = _nc_get_table(termcap);
ptr = table + data->table_data[hashvalue];