diff options
author | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-03-17 21:53:25 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-03-17 21:53:45 +0100 |
commit | 4cf97abfee61209774151e051c93042d8bfab5ee (patch) | |
tree | cb1d235ca8d8754f3e0c7463e8878ea768da487f | |
parent | 4e718641397c876315a87db441afc53139863122 (diff) |
rule: Avoid segfault with anonymous chains
Phil Sutter says:
"When trying to add a rule which contains an anonymous chain to a
non-existent chain, string_misspell_update() is called with a NULL
string because the anonymous chain has no name. Avoid this by making the
function NULL-pointer tolerant."
Fixes: c330152b7f777 ("src: support for implicit chain bindings")
Reported-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
-rw-r--r-- | src/rule.c | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -758,6 +758,9 @@ struct chain *chain_lookup_fuzzy(const struct handle *h, struct table *table; struct chain *chain; + if (!h->chain.name) + return NULL; + string_misspell_init(&st); list_for_each_entry(table, &cache->table_cache.list, cache.list) { |