linux/net
Pablo Neira Ayuso 314a8697d0 netfilter: nf_tables: fix chain binding transaction logic
[ Upstream commit 4bedf9eee0 ]

Add bound flag to rule and chain transactions as in 6a0a8d10a3
("netfilter: nf_tables: use-after-free in failing rule with bound set")
to skip them in case that the chain is already bound from the abort
path.

This patch fixes an imbalance in the chain use refcnt that triggers a
WARN_ON on the table and chain destroy path.

This patch also disallows nested chain bindings, which is not
supported from userspace.

The logic to deal with chain binding in nft_data_hold() and
nft_data_release() is not correct. The NFT_TRANS_PREPARE state needs a
special handling in case a chain is bound but next expressions in the
same rule fail to initialize as described by 1240eb93f0 ("netfilter:
nf_tables: incorrect error path handling with NFT_MSG_NEWRULE").

The chain is left bound if rule construction fails, so the objects
stored in this chain (and the chain itself) are released by the
transaction records from the abort path, follow up patch ("netfilter:
nf_tables: add NFT_TRANS_PREPARE_ERROR to deal with bound set/chain")
completes this error handling.

When deleting an existing rule, chain bound flag is set off so the
rule expression .destroy path releases the objects.

Fixes: d0e2c7de92 ("netfilter: nf_tables: add NFT_CHAIN_BINDING")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-06-28 10:29:48 +02:00
..
6lowpan
9p 9p/xen : Fix use after free bug in xen_9pfs_front_remove due to race condition 2023-04-20 12:13:53 +02:00
802 mrp: introduce active flags to prevent UAF when applicant uninit 2022-12-31 13:14:42 +01:00
8021q vlan: fix a potential uninit-value in vlan_dev_hard_start_xmit() 2023-05-24 17:36:52 +01:00
appletalk
atm atm: hide unused procfs functions 2023-06-09 10:32:26 +02:00
ax25 net: ax25: Fix deadlock caused by skb_recv_datagram in ax25_recvmsg 2022-06-22 14:22:01 +02:00
batman-adv batman-adv: Broken sync while rescheduling delayed work 2023-06-14 11:13:04 +02:00
bluetooth Bluetooth: Fix use-after-free in hci_remove_ltk/hci_remove_irk 2023-06-14 11:13:06 +02:00
bpf bpf: Move skb->len == 0 checks into __bpf_redirect 2022-12-31 13:14:11 +01:00
bpfilter
bridge bridge: always declare tunnel functions 2023-05-24 17:36:52 +01:00
caif net: caif: Fix use-after-free in cfusbl_device_notify() 2023-03-17 08:48:54 +01:00
can can: j1939: avoid possible use-after-free when j1939_can_rx_register fails 2023-06-14 11:13:06 +02:00
ceph libceph: fix potential use-after-free on linger ping and resends 2022-05-25 09:57:28 +02:00
core neighbour: delete neigh_lookup_nodev as not used 2023-06-21 15:59:19 +02:00
dcb net: dcb: disable softirqs in dcbnl_flush_dev() 2022-03-08 19:12:52 +01:00
dccp dccp: Call inet6_destroy_sock() via sk->sk_destruct(). 2023-04-26 13:51:54 +02:00
dns_resolver
dsa net: dsa: tag_brcm: legacy: fix daisy-chained switches 2023-03-30 12:47:48 +02:00
ethernet
ethtool ethtool: Fix uninitialized number of lanes 2023-05-17 11:50:18 +02:00
hsr hsr: ratelimit only when errors are printed 2023-04-05 11:25:02 +02:00
ieee802154 net: ieee802154: fix error return code in dgram_bind() 2022-11-03 23:59:14 +09:00
ife
ipv4 xfrm: Linearize the skb after offloading if needed. 2023-06-28 10:29:46 +02:00
ipv6 xfrm: Linearize the skb after offloading if needed. 2023-06-28 10:29:46 +02:00
iucv net/iucv: Fix size of interrupt data 2023-03-22 13:31:28 +01:00
kcm kcm: close race conditions on sk_receive_queue 2022-11-26 09:24:50 +01:00
key af_key: Reject optional tunnel/BEET mode templates in outbound policies 2023-05-24 17:36:49 +01:00
l2tp inet6: Remove inet6_destroy_sock() in sk->sk_prot->destroy(). 2023-04-26 13:51:54 +02:00
l3mdev l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu 2022-04-27 14:38:53 +02:00
lapb
llc net: deal with most data-races in sk_wait_event() 2023-05-24 17:36:42 +01:00
mac80211 wifi: mac80211: simplify chanctx allocation 2023-06-09 10:32:25 +02:00
mac802154 mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() 2022-12-14 11:37:25 +01:00
mctp net: mctp: purge receive queues on sk destruction 2023-02-06 07:59:02 +01:00
mpls net: mpls: fix stale pointer if allocation fails during device rename 2023-02-22 12:57:09 +01:00
mptcp inet6: Remove inet6_destroy_sock() in sk->sk_prot->destroy(). 2023-04-26 13:51:54 +02:00
ncsi net/ncsi: clear Tx enable mode when handling a Config required AEN 2023-05-17 11:50:16 +02:00
netfilter netfilter: nf_tables: fix chain binding transaction logic 2023-06-28 10:29:48 +02:00
netlabel netlabel: fix out-of-bounds memory accesses 2022-04-13 20:59:10 +02:00
netlink net/netlink: fix NETLINK_LIST_MEMBERSHIPS length report 2023-06-09 10:32:18 +02:00
netrom netrom: fix info-leak in nr_write_internal() 2023-06-09 10:32:16 +02:00
nfc nfc: change order inside nfc_se_io error path 2023-03-17 08:48:49 +01:00
nsh net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment() 2023-05-24 17:36:51 +01:00
openvswitch net: openvswitch: fix possible memory leak in ovs_meter_cmd_set() 2023-02-22 12:57:09 +01:00
packet af_packet: do not use READ_ONCE() in packet_bind() 2023-06-09 10:32:17 +02:00
phonet phonet: refcount leak in pep_sock_accep 2022-01-11 15:35:16 +01:00
psample
qrtr net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume() 2023-04-20 12:13:53 +02:00
rds rds: rds_rm_zerocopy_callback() correct order for list_add_tail() 2023-03-10 09:39:16 +01:00
rfkill rfkill: make new event layout opt-in 2022-04-08 14:23:00 +02:00
rose net/rose: Fix to not accept on connected socket 2023-02-22 12:57:02 +01:00
rxrpc rxrpc: Fix hard call timeout units 2023-05-17 11:50:17 +02:00
sched net/sched: cls_api: Fix lockup on flushing explicitly created chain 2023-06-21 15:59:18 +02:00
sctp sctp: fix an error code in sctp_sf_eat_auth() 2023-06-21 15:59:17 +02:00
smc net/smc: Avoid to access invalid RMBs' MRs in SMCRv1 ADD LINK CONT 2023-06-14 11:13:01 +02:00
strparser bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding 2021-11-18 19:17:11 +01:00
sunrpc SUNRPC: Fix trace_svc_register() call site 2023-05-24 17:36:51 +01:00
switchdev
tipc net: tipc: resize nlattr array to correct size 2023-06-21 15:59:18 +02:00
tls net: deal with most data-races in sk_wait_event() 2023-05-24 17:36:42 +01:00
unix af_unix: Fix data races around sk->sk_shutdown. 2023-05-24 17:36:42 +01:00
vmw_vsock vsock: avoid to close connected socket after the timeout 2023-05-24 17:36:49 +01:00
wireless wifi: cfg80211: fix double lock bug in reg_wdev_chan_valid() 2023-06-21 15:59:14 +02:00
x25 net/x25: Fix to not accept on connected socket 2023-02-09 11:26:40 +01:00
xdp xsk: Fix unaligned descriptor validation 2023-05-11 23:00:27 +09:00
xfrm xfrm: Ensure policies always checked on XFRM-I input path 2023-06-28 10:29:45 +02:00
compat.c
devres.c
Kconfig Remove DECnet support from kernel 2023-06-21 15:59:15 +02:00
Makefile Remove DECnet support from kernel 2023-06-21 15:59:15 +02:00
socket.c net: annotate sk->sk_err write from do_recvmmsg() 2023-05-24 17:36:42 +01:00
sysctl_net.c