Jonathon Reinhart d3598eb391 netfilter: conntrack: Make global sysctls readonly in non-init netns ... commit 2671fa4dc0 upstream. These sysctls point to global variables: - NF_SYSCTL_CT_MAX (&nf_conntrack_max) - NF_SYSCTL_CT_EXPECT_MAX (&nf_ct_expect_max) - NF_SYSCTL_CT_BUCKETS (&nf_conntrack_htable_size_user) Because their data pointers are not updated to point to per-netns structures, they must be marked read-only in a non-init_net ns. Otherwise, changes in any net namespace are reflected in (leaked into) all other net namespaces. This problem has existed since the introduction of net namespaces. The current logic marks them read-only only if the net namespace is owned by an unprivileged user (other than init_user_ns). Commit d0febd81ae ("netfilter: conntrack: re-visit sysctls in unprivileged namespaces") "exposes all sysctls even if the namespace is unpriviliged." Since we need to mark them readonly in any case, we can forego the unprivileged user check altogether. Fixes: d0febd81ae ("netfilter: conntrack: re-visit sysctls in unprivileged namespaces") Signed-off-by: Jonathon Reinhart <Jonathon.Reinhart@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-07 11:04:31 +02:00
..
ipset	netfilter: ipset: fixes possible oops in mtype_resize	2021-01-19 18:27:23 +01:00
ipvs	ipvs: fix possible memory leak in ip_vs_control_net_init	2020-11-27 12:10:46 +01:00
core.c	netfilter: add inet ingress support	2020-10-12 01:57:34 +02:00
Kconfig	netfilter: nftables: allow re-computing sctp CRC-32C in 'payload' statements	2020-10-15 11:45:19 -07:00
Makefile
nf_conncount.c
nf_conntrack_acct.c
nf_conntrack_amanda.c
nf_conntrack_broadcast.c
nf_conntrack_core.c	netfilter: conntrack: skip identical origin tuple in same zone only	2021-02-17 11:02:26 +01:00
nf_conntrack_ecache.c
nf_conntrack_expect.c
nf_conntrack_extend.c
nf_conntrack_ftp.c
nf_conntrack_h323_asn1.c
nf_conntrack_h323_main.c
nf_conntrack_h323_types.c
nf_conntrack_helper.c
nf_conntrack_irc.c
nf_conntrack_labels.c
nf_conntrack_netbios_ns.c
nf_conntrack_netlink.c	netfilter: ctnetlink: fix dump of the expect mask attribute	2021-03-30 14:31:59 +02:00
nf_conntrack_pptp.c	netfilter: delete repeated words	2020-08-28 20:11:38 +02:00
nf_conntrack_proto_dccp.c
nf_conntrack_proto_generic.c
nf_conntrack_proto_gre.c	netfilter: conntrack: Fix gre tunneling over ipv6	2021-04-10 13:36:08 +02:00
nf_conntrack_proto_icmp.c
nf_conntrack_proto_icmpv6.c
nf_conntrack_proto_sctp.c	netfilter: conntrack: allow sctp hearbeat after connection re-use	2020-08-20 14:13:49 +02:00
nf_conntrack_proto_tcp.c	netfilter: conntrack: connection timeout after re-register	2020-10-20 13:54:53 +02:00
nf_conntrack_proto_udp.c	netfilter: conntrack: do not auto-delete clash entries on reply	2020-08-29 13:03:06 +02:00
nf_conntrack_proto.c	netfilter: conntrack: nf_conncount_init is failing with IPv6 disabled	2020-09-08 13:04:54 +02:00
nf_conntrack_sane.c
nf_conntrack_seqadj.c
nf_conntrack_sip.c
nf_conntrack_snmp.c
nf_conntrack_standalone.c	netfilter: conntrack: Make global sysctls readonly in non-init netns	2021-05-07 11:04:31 +02:00
nf_conntrack_tftp.c
nf_conntrack_timeout.c
nf_conntrack_timestamp.c
nf_dup_netdev.c	netfilter: nf_fwd_netdev: clear timestamp in forwarding path	2020-10-22 14:49:36 +02:00
nf_flow_table_core.c	netfilter: flowtable: Make sure GC works periodically in idle system	2021-03-30 14:32:01 +02:00
nf_flow_table_inet.c
nf_flow_table_ip.c	netfilter: flowtable: reduce calls to pskb_may_pull()	2020-10-12 01:58:10 +02:00
nf_flow_table_offload.c	netfilter: flowtable: fix NAT IPv6 offload mangling	2021-04-21 13:00:55 +02:00
nf_internals.h
nf_log_common.c	netfilter: nf_log: missing vlan offload tag and proto	2020-10-14 01:25:14 +02:00
nf_log_netdev.c
nf_log.c
nf_nat_amanda.c
nf_nat_core.c	netfilter: nf_nat: Fix memleak in nf_nat_init	2021-01-19 18:27:33 +01:00
nf_nat_ftp.c
nf_nat_helper.c
nf_nat_irc.c
nf_nat_masquerade.c
nf_nat_proto.c	netfilter: nf_nat: undo erroneous tcp edemux lookup	2021-03-17 17:06:12 +01:00
nf_nat_redirect.c
nf_nat_sip.c
nf_nat_tftp.c
nf_queue.c
nf_sockopt.c
nf_synproxy_core.c	netfilter: use actual socket sk rather than skb sk when routing harder	2020-10-30 12:57:39 +01:00
nf_tables_api.c	netfilter: nftables: skip hook overlap logic if flowtable is stale	2021-04-10 13:36:08 +02:00
nf_tables_core.c	netfilter: nf_tables: Implement fast bitwise expression	2020-10-04 21:08:33 +02:00
nf_tables_offload.c	netfilter: nftables_offload: set address type in control dissector	2020-11-27 12:10:46 +01:00
nf_tables_trace.c
nfnetlink_acct.c	netfilter: Replace HTTP links with HTTPS ones	2020-07-29 20:09:18 +02:00
nfnetlink_cthelper.c
nfnetlink_cttimeout.c
nfnetlink_log.c	netfilter: nfnetlink: nfnetlink_unicast() reports EAGAIN instead of ENOBUFS	2020-08-28 20:11:58 +02:00
nfnetlink_osf.c
nfnetlink_queue.c	netfilter: nfnetlink: nfnetlink_unicast() reports EAGAIN instead of ENOBUFS	2020-08-28 20:11:58 +02:00
nfnetlink.c	netfilter: nf_tables: missing validation from the abort path	2020-10-30 12:57:39 +01:00
nft_bitwise.c	netfilter: nf_tables: Implement fast bitwise expression	2020-10-04 21:08:33 +02:00
nft_byteorder.c
nft_chain_filter.c	netfilter: nf_tables: add inet ingress support	2020-10-12 01:57:34 +02:00
nft_chain_nat.c
nft_chain_route.c	netfilter: use actual socket sk rather than skb sk when routing harder	2020-10-30 12:57:39 +01:00
nft_cmp.c	netfilter: nftables_offload: build mask based from the matching bytes	2020-11-27 12:10:47 +01:00
nft_compat.c	netfilter: nft_compat: remove flush counter optimization	2020-08-10 13:03:36 +02:00
nft_connlimit.c
nft_counter.c
nft_ct.c	netfilter: nft_ct: Remove confirmation check for NFT_CT_ID	2020-12-09 10:31:58 +01:00
nft_dup_netdev.c
nft_dynset.c	netfilter: nft_dynset: add timeout extension to template	2021-02-03 23:28:44 +01:00
nft_exthdr.c	netfilter: nf_tables: nft_exthdr: the presence return value should be little-endian	2020-08-10 13:02:43 +02:00
nft_fib_inet.c
nft_fib_netdev.c
nft_fib.c
nft_flow_offload.c	netfilter: conntrack: do not auto-delete clash entries on reply	2020-08-29 13:03:06 +02:00
nft_fwd_netdev.c	netfilter: nf_fwd_netdev: clear timestamp in forwarding path	2020-10-22 14:49:36 +02:00
nft_hash.c
nft_immediate.c
nft_limit.c	netfilter: nft_limit: avoid possible divide error in nft_limit_init	2021-04-21 13:00:56 +02:00
nft_log.c
nft_lookup.c
nft_masq.c
nft_meta.c	netfilter: nftables_offload: build mask based from the matching bytes	2020-11-27 12:10:47 +01:00
nft_nat.c
nft_numgen.c
nft_objref.c
nft_osf.c
nft_payload.c	netfilter: nftables_offload: build mask based from the matching bytes	2020-11-27 12:10:47 +01:00
nft_queue.c
nft_quota.c
nft_range.c
nft_redir.c
nft_reject_inet.c
nft_reject.c
nft_rt.c
nft_set_bitmap.c
nft_set_hash.c
nft_set_pipapo_avx2.c
nft_set_pipapo_avx2.h
nft_set_pipapo.c	netfilter: Replace HTTP links with HTTPS ones	2020-07-29 20:09:18 +02:00
nft_set_pipapo.h
nft_set_rbtree.c	netfilter: nft_set_rbtree: Detect partial overlap with start endpoint match	2020-08-21 17:37:36 +02:00
nft_socket.c	netfilter: nft_socket: add wildcard support	2020-08-29 13:04:44 +02:00
nft_synproxy.c
nft_tproxy.c
nft_tunnel.c
nft_xfrm.c
utils.c	netfilter: use actual socket sk rather than skb sk when routing harder	2020-10-30 12:57:39 +01:00
x_tables.c	netfilter: x_tables: fix compat match/target pad out-of-bound write	2021-04-16 11:43:21 +02:00
xt_addrtype.c
xt_AUDIT.c
xt_bpf.c
xt_cgroup.c
xt_CHECKSUM.c
xt_CLASSIFY.c
xt_cluster.c
xt_comment.c
xt_connbytes.c
xt_connlabel.c
xt_connlimit.c
xt_connmark.c	netfilter: Replace HTTP links with HTTPS ones	2020-07-29 20:09:18 +02:00
xt_CONNSECMARK.c	netfilter: Replace HTTP links with HTTPS ones	2020-07-29 20:09:18 +02:00
xt_conntrack.c
xt_cpu.c
xt_CT.c
xt_dccp.c
xt_devgroup.c
xt_dscp.c
xt_DSCP.c
xt_ecn.c
xt_esp.c
xt_hashlimit.c
xt_helper.c
xt_hl.c
xt_HL.c
xt_HMARK.c	netfilter: xt_HMARK: Use ip_is_fragment() helper	2020-08-28 19:55:51 +02:00
xt_IDLETIMER.c
xt_ipcomp.c
xt_iprange.c
xt_ipvs.c
xt_l2tp.c
xt_LED.c
xt_length.c
xt_limit.c
xt_LOG.c
xt_mac.c
xt_mark.c
xt_MASQUERADE.c
xt_multiport.c
xt_nat.c
xt_NETMAP.c
xt_nfacct.c	netfilter: Replace HTTP links with HTTPS ones	2020-07-29 20:09:18 +02:00
xt_NFLOG.c
xt_NFQUEUE.c
xt_osf.c
xt_owner.c
xt_physdev.c
xt_pkttype.c
xt_policy.c
xt_quota.c
xt_rateest.c
xt_RATEEST.c	netfilter: xt_RATEEST: reject non-null terminated string from userspace	2021-01-12 20:18:26 +01:00
xt_realm.c
xt_recent.c	netfilter: xt_recent: Fix attempt to update deleted entry	2021-02-17 11:02:25 +01:00
xt_REDIRECT.c
xt_repldata.h
xt_sctp.c
xt_SECMARK.c
xt_set.c
xt_socket.c
xt_state.c
xt_statistic.c
xt_string.c
xt_tcpmss.c
xt_TCPMSS.c
xt_TCPOPTSTRIP.c
xt_tcpudp.c
xt_TEE.c
xt_time.c	netfilter: Replace HTTP links with HTTPS ones	2020-07-29 20:09:18 +02:00
xt_TPROXY.c
xt_TRACE.c
xt_u32.c