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linux/include/net/netfilter
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Pablo Neira Ayuso 02a3231b6d netfilter: nf_conntrack_expect: store netns and zone in expectation 
__nf_ct_expect_find() and nf_ct_expect_find_get() are called under
rcu_read_lock() but they dereference the master conntrack via
exp->master.

Since the expectation does not hold a reference on the master conntrack,
this could be dying conntrack or different recycled conntrack than the
real master due to SLAB_TYPESAFE_RCU.

Store the netns, the master_tuple and the zone in struct
nf_conntrack_expect as a safety measure.

This patch is required by the follow up fix not to dump expectations
that do not belong to this netns.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 		2026-03-26 13:24:40 +01:00
..
ipv4 netfilter: nf_reject: remove unneeded exports 2025-09-02 15:28:17 +02:00
ipv6 netfilter: nf_reject: remove unneeded exports 2025-09-02 15:28:17 +02:00
br_netfilter.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_bpf_link.h bpf: minimal support for programs hooked into netfilter framework 2023-04-21 11:34:14 -07:00
nf_conntrack.h netfilter: nf_conntrack: don't rely on implicit includes 2026-01-20 16:23:37 +01:00
nf_conntrack_acct.h netfilter: conntrack: Remove unused function declarations 2023-08-08 13:02:00 +02:00
nf_conntrack_act_ct.h net/sched: act_ct: Always fill offloading tuple iifidx 2023-11-08 17:47:08 -08:00
nf_conntrack_bpf.h net: netfilter: move bpf_ct_set_nat_info kfunc in nf_nat_bpf.c 2022-10-03 09:17:32 -07:00
nf_conntrack_bridge.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_conntrack_core.h netfilter: ctnetlink: ensure safe access to master conntrack 2026-03-26 13:18:32 +01:00
nf_conntrack_count.h netfilter: nf_conncount: increase the connection clean up limit to 64 2026-01-20 16:23:37 +01:00
nf_conntrack_ecache.h netfilter: conntrack: add conntrack event timestamp 2025-01-09 14:42:16 +01:00
nf_conntrack_expect.h netfilter: nf_conntrack_expect: store netns and zone in expectation 2026-03-26 13:24:40 +01:00
nf_conntrack_extend.h netfilter: extensions: introduce extension genid count 2022-05-13 18:52:16 +02:00
nf_conntrack_helper.h netfilter: helper: Remove unused function declarations 2023-08-08 13:01:59 +02:00
nf_conntrack_l4proto.h netfilter: fix typo in nf_conntrack_l4proto.h comment 2025-10-30 12:52:45 +01:00
nf_conntrack_labels.h netfilter: conntrack: switch connlabels to atomic_t 2023-10-24 13:16:30 +02:00
nf_conntrack_seqadj.h netfilter: conntrack: remove extension register api 2022-02-04 06:30:28 +01:00
nf_conntrack_synproxy.h netfilter: conntrack: wrap two inline functions in config checks. 2019-09-13 12:47:10 +02:00
nf_conntrack_timeout.h netfilter: nf_conntrack: add missing __rcu annotations 2022-07-11 16:25:15 +02:00
nf_conntrack_timestamp.h netfilter: conntrack: remove extension register api 2022-02-04 06:30:28 +01:00
nf_conntrack_tuple.h netfilter: don't include xt and nftables.h in unrelated subsystems 2026-01-20 16:23:37 +01:00
nf_conntrack_zones.h netfilter: conntrack: remove CONFIG_NF_CONNTRACK checks from nf_conntrack_zones.h. 2019-09-13 12:47:41 +02:00
nf_dup_netdev.h netfilter: nft_{fwd,dup}_netdev: add offload support 2019-09-10 22:44:29 +02:00
nf_flow_table.h netfilter: flowtable: Add IPIP rx sw acceleration 2025-11-28 00:00:38 +00:00
nf_hooks_lwtunnel.h sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
nf_log.h netfilter: load nf_log_syslog on enabling nf_conntrack_log_invalid 2025-07-25 18:35:41 +02:00
nf_nat.h net: move the nat function to nf_nat_ovs for ovs and tc 2022-12-12 10:14:03 +00:00
nf_nat_helper.h netfilter: nat: move repetitive nat port reserve loop to a helper 2022-09-07 16:46:04 +02:00
nf_nat_masquerade.h netfilter: update include directives. 2019-09-13 12:33:06 +02:00
nf_nat_redirect.h netfilter: nft_redir: use `struct nf_nat_range2` throughout and deduplicate eval call-backs 2023-03-22 21:48:59 +01:00
nf_queue.h netfilter: nfnetlink_queue: do shared-unconfirmed check before segmentation 2026-02-06 13:34:55 +01:00
nf_reject.h netfilter: conntrack: remove DCCP protocol support 2025-07-03 13:51:39 +02:00
nf_socket.h
…
nf_synproxy.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_tables.h nf_tables: nft_dynset: fix possible stateful expression memleak in error path 2026-03-13 15:31:15 +01:00
nf_tables_core.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-11 17:40:13 -07:00
nf_tables_ipv4.h netfilter: nf_tables: restore IP sanity checks for netdev/egress 2024-08-26 13:05:28 +02:00
nf_tables_ipv6.h net/ipv6: Introduce payload_len helpers 2026-02-06 20:50:03 -08:00
nf_tables_offload.h netfilter: nf_tables: bail out early if hardware offload is not supported 2022-06-06 19:19:15 +02:00
nf_tproxy.h net: reformat kdoc return statements 2024-12-09 14:44:59 -08:00
nft_fib.h netfilter: nf_tables: nft_fib: consistent l3mdev handling 2025-05-23 13:57:09 +02:00
nft_meta.h netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_reject.h netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
xt_rateest.h net: sched: Merge Qdisc::bstats and Qdisc::cpu_bstats data types 2021-10-18 12:54:41 +01:00