diff options
Diffstat (limited to 'libiptc/libiptc.c')
| -rw-r--r-- | libiptc/libiptc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libiptc/libiptc.c b/libiptc/libiptc.c index ceeb017b..97823f93 100644 --- a/libiptc/libiptc.c +++ b/libiptc/libiptc.c @@ -606,6 +606,15 @@ static int iptcc_chain_index_delete_chain(struct chain_head *c, struct xtc_handl if (index_ptr == &c->list) { /* Chain used as index ptr */ + /* If this is the last chain in the list, its index bucket just + * became empty. Adjust the size to avoid a NULL-pointer deref + * later. + */ + if (next == &h->chains) { + h->chain_index_sz--; + return 0; + } + /* See if its possible to avoid a rebuild, by shifting * to next pointer. Its possible if the next pointer * is located in the same index bucket. |