| Message ID | 1407252636-3459-1-git-send-email-pablo@netfilter.org |
|---|---|
| State | Accepted |
| Delegated to: | Pablo Neira |
| Headers | show |
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index f95dc95..f7dce2b 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -899,6 +899,9 @@ static struct nft_stats __percpu *nft_stats_alloc(const struct nlattr *attr) static void nft_chain_stats_replace(struct nft_base_chain *chain, struct nft_stats __percpu *newstats) { + if (newstats == NULL) + return; + if (chain->stats) { struct nft_stats __percpu *oldstats = nft_dereference(chain->stats);
Fix possible replacemen of the per-cpu chain counters by null pointer when updating an existing chain in the commit path. Reported-by: Matteo Croce <technoboy85@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> --- net/netfilter/nf_tables_api.c | 3 +++ 1 file changed, 3 insertions(+)