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linux-stable-mirror/net/netfilter
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Pavel Skripkin 62f813769f netfilter: nft_ct: protect nft_ct_pcpu_template_refcnt with mutex 
[ Upstream commit e3245a7b7b ]

Syzbot hit use-after-free in nf_tables_dump_sets. The problem was in
missing lock protection for nft_ct_pcpu_template_refcnt.

Before commit f102d66b33 ("netfilter: nf_tables: use dedicated
mutex to guard transactions") all transactions were serialized by global
mutex, but then global mutex was changed to local per netnamespace
commit_mutex.

This change causes use-after-free bug, when 2 netnamespaces concurently
changing nft_ct_pcpu_template_refcnt without proper locking. Fix it by
adding nft_ct_pcpu_mutex and protect all nft_ct_pcpu_template_refcnt
changes with it.

Fixes: f102d66b33 ("netfilter: nf_tables: use dedicated mutex to guard transactions")
Reported-and-tested-by: syzbot+649e339fa6658ee623d3@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-22 12:28:03 +02:00
..
ipset
netfilter: ipset: fixes possible oops in mtype_resize
2021-01-19 18:27:23 +01:00
ipvs
ipvs: ignore IP_VS_SVC_F_HASHED flag when adding service
2021-06-10 13:39:15 +02:00
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
x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2
2020-04-09 00:12:48 +09:00
nf_conncount.c
…
nf_conntrack_acct.c
…
nf_conntrack_amanda.c
…
nf_conntrack_broadcast.c
…
nf_conntrack_core.c
netfilter: conntrack: collect all entries in one cycle
2021-09-03 10:09:21 +02:00
nf_conntrack_ecache.c
…
nf_conntrack_expect.c
…
nf_conntrack_extend.c
…
nf_conntrack_ftp.c
treewide: Remove uninitialized_var() usage
2020-07-16 12:35:15 -07:00
nf_conntrack_h323_asn1.c
netfilter: Use fallthrough pseudo-keyword
2020-07-22 01:18:05 +02:00
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: suspicious RCU usage in ctnetlink_dump_helpinfo
2021-07-25 14:36:19 +02:00
nf_conntrack_pptp.c
netfilter: delete repeated words
2020-08-28 20:11:38 +02:00
nf_conntrack_proto_dccp.c
netfilter: Fix fall-through warnings for Clang
2021-09-22 12:28:03 +02:00
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
netfilter: ctnetlink: add kernel side filtering for dump
2020-05-27 22:20:34 +02:00
nf_conntrack_proto_icmpv6.c
netfilter: ctnetlink: add kernel side filtering for dump
2020-05-27 22:20:34 +02:00
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: unregister ipv4 sockopts on error unwind
2021-06-10 13:39:13 +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: Remove redundant hw refresh bit
2021-06-03 09:00:37 +02:00
nf_flow_table_inet.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
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
net: Fix offloading indirect devices dependency on qdisc order creation
2021-09-18 13:40:30 +02:00
nf_internals.h
netfilter: ctnetlink: add kernel side filtering for dump
2020-05-27 22:20:34 +02:00
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
sysctl: pass kernel pointers to ->proc_handler
2020-04-27 02:07:40 -04:00
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
netfilter: nf_queue: prefer nf_queue_entry_free
2020-03-29 16:28:29 +02:00
nf_sockopt.c
netfilter: switch nf_setsockopt to sockptr_t
2020-07-24 15:41:54 -07:00
nf_synproxy_core.c
netfilter: synproxy: Fix out of bounds when parsing TCP options
2021-06-23 14:42:43 +02:00
nf_tables_api.c
netfilter: Fix fall-through warnings for Clang
2021-09-22 12:28:03 +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
net: Fix offloading indirect devices dependency on qdisc order creation
2021-09-18 13:40:30 +02:00
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
netfilter: nfnetlink_cthelper: hit EBUSY on updates if size mismatches
2021-06-10 13:39:19 +02:00
nfnetlink_cttimeout.c
netfilter: Use fallthrough pseudo-keyword
2020-07-22 01:18:05 +02:00
nfnetlink_log.c
netfilter: nfnetlink: nfnetlink_unicast() reports EAGAIN instead of ENOBUFS
2020-08-28 20:11:58 +02:00
nfnetlink_osf.c
netfilter: nfnetlink_osf: Fix a missing skb_header_pointer() NULL check
2021-05-19 10:13:08 +02:00
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
netfilter: nft_chain_nat: inet family is missing module ownership
2020-03-06 18:00:43 +01:00
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: VLAN id needs host byteorder in flow dissector
2021-05-14 09:50:40 +02:00
nft_compat.c
netfilter: nft_compat: remove flush counter optimization
2020-08-10 13:03:36 +02:00
nft_connlimit.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_counter.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_ct.c
netfilter: nft_ct: protect nft_ct_pcpu_template_refcnt with mutex
2021-09-22 12:28:03 +02:00
nft_dup_netdev.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_dynset.c
netfilter: nft_dynset: add timeout extension to template
2021-02-03 23:28:44 +01:00
nft_exthdr.c
netfilter: nft_exthdr: check for IPv6 packet before further processing
2021-07-14 16:56:22 +02:00
nft_fib_inet.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_fib_netdev.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_fib.c
netfilter: Use fallthrough pseudo-keyword
2020-07-22 01:18:05 +02:00
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
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_immediate.c
netfilter: nf_tables: Fix a use after free in nft_immediate_destroy()
2020-07-15 20:15:19 +02:00
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
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_lookup.c
netfilter: nf_tables: do not update stateful expressions if lookup is inverted
2020-04-05 23:26:36 +02:00
nft_masq.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_meta.c
netfilter: nftables_offload: build mask based from the matching bytes
2020-11-27 12:10:47 +01:00
nft_nat.c
netfilter: nft_nat: allow to specify layer 4 protocol NAT only
2021-08-04 12:46:42 +02:00
nft_numgen.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_objref.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_osf.c
netfilter: nft_osf: check for TCP packet before further processing
2021-07-14 16:56:22 +02:00
nft_payload.c
netfilter: nftables_offload: VLAN id needs host byteorder in flow dissector
2021-05-14 09:50:40 +02:00
nft_queue.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_quota.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_range.c
…
nft_redir.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_reject_inet.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_reject.c
netfilter: introduce support for reject at prerouting stage
2020-06-30 18:21:02 +02:00
nft_rt.c
…
nft_set_bitmap.c
netfilter: nf_tables: do not update stateful expressions if lookup is inverted
2020-04-05 23:26:36 +02:00
nft_set_hash.c
netfilter: nftables: avoid potential overflows on 32bit arches
2021-09-12 08:58:27 +02:00
nft_set_pipapo_avx2.c
netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version
2021-06-03 09:00:28 +02:00
nft_set_pipapo_avx2.h
x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2
2020-04-09 00:12:48 +09:00
nft_set_pipapo.c
netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version
2021-06-03 09:00:28 +02:00
nft_set_pipapo.h
netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version
2021-06-03 09:00:28 +02:00
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
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_tproxy.c
netfilter: nft_tproxy: restrict support to TCP and UDP transport protocols
2021-07-14 16:56:22 +02:00
nft_tunnel.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
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
netfilter: Replace zero-length array with flexible-array member
2020-03-15 15:20:16 +01:00
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
netfilter: xt_IDLETIMER: target v1 - match Android layout
2020-04-05 23:26:37 +02:00
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
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
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
netfilter: xt_SECMARK: add new revision to fix structure layout
2021-05-19 10:13:06 +02:00
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
…