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Florian WestphalandGreg Kroah-Hartman a836be60a3 netfilter: nft_set_rbtree: fix null deref on element insertion 
[ Upstream commit 61ae320a29 ]

There is no guarantee that rb_prev() will not return NULL in nft_rbtree_gc_elem():

general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
 nft_add_set_elem+0x14b0/0x2990
  nf_tables_newsetelem+0x528/0xb30

Furthermore, there is a possible use-after-free while iterating,
'node' can be free'd so we need to cache the next value to use.

Fixes: c9e6978e27 ("netfilter: nft_set_rbtree: Switch to node list walk for overlap detection")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-05-24 17:32:48 +01:00
..
ipset
netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function.
2023-01-18 11:58:21 +01:00
ipvs
ipvs: Update width of source for ip_vs_sync_conn_options
2023-05-24 17:32:39 +01:00
core.c
netfilter: conntrack: fix possible bug_on with enable_hooks=1
2023-05-24 17:32:32 +01:00
Kconfig
netfilter: conntrack: NF_CONNTRACK_PROCFS should no longer default to y
2022-08-17 08:46:30 +02:00
Makefile
net: netfilter: move bpf_ct_set_nat_info kfunc in nf_nat_bpf.c
2022-10-03 09:17:32 -07:00
nf_conncount.c
netfilter: nf_conncount: reduce unnecessary GC
2022-05-16 13:05:40 +02:00
nf_conntrack_acct.c
netfilter: conntrack: remove extension register api
2022-02-04 06:30:28 +01:00
nf_conntrack_amanda.c
…
nf_conntrack_bpf.c
netfilter: conntrack: restore IPS_CONFIRMED out of nf_conntrack_hash_check_insert()
2023-05-11 23:03:25 +09:00
nf_conntrack_broadcast.c
netfilter: nf_conntrack: use rcu accessors where needed
2022-07-11 16:25:15 +02:00
nf_conntrack_core.c
netfilter: conntrack: restore IPS_CONFIRMED out of nf_conntrack_hash_check_insert()
2023-05-11 23:03:25 +09:00
nf_conntrack_ecache.c
netfilter: ctnetlink: make event listener tracking global
2023-03-11 13:55:24 +01:00
nf_conntrack_expect.c
netfilter: conntrack: convert to refcount_t api
2022-01-09 23:30:13 +01:00
nf_conntrack_extend.c
netfilter: extensions: introduce extension genid count
2022-05-13 18:52:16 +02:00
nf_conntrack_ftp.c
netfilter: nf_ct_ftp: fix deadlock when nat rewrite is needed
2022-09-20 23:50:03 +02:00
nf_conntrack_h323_asn1.c
…
nf_conntrack_h323_main.c
netfilter: nf_ct_h323: cap packet size at 64k
2022-08-11 16:50:49 +02:00
nf_conntrack_h323_types.c
…
nf_conntrack_helper.c
netfilter: remove nf_conntrack_helper sysctl and modparam toggles
2022-08-31 12:12:32 +02:00
nf_conntrack_irc.c
netfilter: nf_conntrack_irc: Tighten matching on DCC message
2022-09-07 15:55:23 +02:00
nf_conntrack_labels.c
netfilter: conntrack: remove extension register api
2022-02-04 06:30:28 +01:00
nf_conntrack_netbios_ns.c
netfilter: nf_conntrack_netbios_ns: fix helper module alias
2022-01-11 10:41:44 +01:00
nf_conntrack_netlink.c
netfilter: conntrack: fix wrong ct->timeout value
2023-05-11 23:03:25 +09:00
nf_conntrack_pptp.c
netfilter: nf_conntrack: add missing __rcu annotations
2022-07-11 16:25:15 +02:00
nf_conntrack_proto_dccp.c
…
nf_conntrack_proto_generic.c
…
nf_conntrack_proto_gre.c
…
nf_conntrack_proto_icmp.c
…
nf_conntrack_proto_icmpv6.c
netfilter: conntrack: set icmpv6 redirects as RELATED
2022-12-31 13:32:19 +01:00
nf_conntrack_proto_sctp.c
netfilter: conntrack: unify established states for SCTP paths
2023-02-01 08:34:51 +01:00
nf_conntrack_proto_tcp.c
netfilter: conntrack: handle tcp challenge acks during connection reuse
2023-02-01 08:34:21 +01:00
nf_conntrack_proto_udp.c
Revert "netfilter: conntrack: mark UDP zero checksum as CHECKSUM_UNNECESSARY"
2022-03-03 13:35:22 +01:00
nf_conntrack_proto.c
netfilter: conntrack: add nf_ct_iter_data object for nf_ct_iterate_cleanup*()
2022-05-13 18:56:27 +02:00
nf_conntrack_sane.c
netfilter: nf_ct_sane: remove pseudo skb linearization
2022-08-11 16:50:25 +02:00
nf_conntrack_seqadj.c
netfilter: conntrack: remove extension register api
2022-02-04 06:30:28 +01:00
nf_conntrack_sip.c
netfilter: nf_conntrack_sip: fix ct_sip_walk_headers
2022-09-07 15:06:26 +02:00
nf_conntrack_snmp.c
…
nf_conntrack_standalone.c
netfilter: conntrack: fix possible bug_on with enable_hooks=1
2023-05-24 17:32:32 +01:00
nf_conntrack_tftp.c
…
nf_conntrack_timeout.c
netfilter: nf_conntrack: use rcu accessors where needed
2022-07-11 16:25:15 +02:00
nf_conntrack_timestamp.c
netfilter: conntrack: remove extension register api
2022-02-04 06:30:28 +01:00
nf_dup_netdev.c
netfilter: nf_dup_netdev: add and use recursion counter
2022-06-21 10:50:41 +02:00
nf_flow_table_core.c
netfilter: flowtable: fix stuck flows on cleanup due to pending work
2022-08-24 07:43:21 +02:00
nf_flow_table_inet.c
netfilter: flowtable: Fix QinQ and pppoe support for inet table
2022-03-16 11:25:04 +01:00
nf_flow_table_ip.c
netfilter: flowtable: move dst_check to packet path
2022-05-18 17:34:26 +02:00
nf_flow_table_offload.c
netfilter: flowtable: really fix NAT IPv6 offload
2022-12-31 13:32:52 +01:00
nf_flow_table_procfs.c
netfilter: nf_flow_table: count pending offload workqueue tasks
2022-07-11 16:25:14 +02:00
nf_hooks_lwtunnel.c
…
nf_internals.h
…
nf_log_syslog.c
netfilter: nf_log: incorrect offset to network header
2022-07-09 09:55:43 +02:00
nf_log.c
netfilter: move from strlcpy with unused retval to strscpy
2022-09-07 16:46:03 +02:00
nf_nat_amanda.c
netfilter: nat: move repetitive nat port reserve loop to a helper
2022-09-07 16:46:04 +02:00
nf_nat_bpf.c
net: netfilter: move bpf_ct_set_nat_info kfunc in nf_nat_bpf.c
2022-10-03 09:17:32 -07:00
nf_nat_core.c
netfilter: nf_nat: Fix possible memory leak in nf_nat_init()
2022-11-02 10:47:22 +01:00
nf_nat_ftp.c
netfilter: nat: move repetitive nat port reserve loop to a helper
2022-09-07 16:46:04 +02:00
nf_nat_helper.c
netfilter: nat: avoid long-running port range loop
2022-09-07 16:46:04 +02:00
nf_nat_irc.c
netfilter: nat: move repetitive nat port reserve loop to a helper
2022-09-07 16:46:04 +02:00
nf_nat_masquerade.c
netfilter: conntrack: add nf_ct_iter_data object for nf_ct_iterate_cleanup*()
2022-05-13 18:56:27 +02:00
nf_nat_proto.c
…
nf_nat_redirect.c
…
nf_nat_sip.c
netfilter: nat: move repetitive nat port reserve loop to a helper
2022-09-07 16:46:04 +02:00
nf_nat_tftp.c
…
nf_queue.c
netfilter: nf_queue: handle socket prefetch
2022-03-01 11:51:15 +01:00
nf_sockopt.c
…
nf_synproxy_core.c
ip: Fix data-races around sysctl_ip_default_ttl.
2022-07-15 11:49:55 +01:00
nf_tables_api.c
netfilter: nf_tables: fix nft_trans type confusion
2023-05-24 17:32:48 +01:00
nf_tables_core.c
netfilter: nf_tables: fix crash when nf_trace is enabled
2022-08-05 18:50:14 -07:00
nf_tables_offload.c
netfilter: nf_tables: bail out early if hardware offload is not supported
2022-06-06 19:19:15 +02:00
nf_tables_trace.c
netfilter: nf_tables: avoid skb access on nf_stolen
2022-06-27 19:22:54 +02:00
nfnetlink_acct.c
…
nfnetlink_cthelper.c
netfilter: nf_conntrack: use rcu accessors where needed
2022-07-11 16:25:15 +02:00
nfnetlink_cttimeout.c
netfilter: cttimeout: fix slab-out-of-bounds read typo in cttimeout_net_exit
2022-06-17 23:31:20 +02:00
nfnetlink_hook.c
Remove DECnet support from kernel
2022-08-22 14:26:30 +01:00
nfnetlink_log.c
net: Get rcv tstamp if needed in nfnetlink_{log, queue}.c
2022-03-03 14:38:48 +00:00
nfnetlink_osf.c
netfilter: nfnetlink_osf: fix possible bogus match in nf_osf_find()
2022-09-07 15:55:28 +02:00
nfnetlink_queue.c
netfilter: nf_queue: do not allow packet truncation below transport header offset
2022-07-26 21:12:42 +02:00
nfnetlink.c
netfilter: nf_tables: don't write table validation state without mutex
2023-05-11 23:03:26 +09:00
nft_bitwise.c
netfilter: nf_tables: upfront validation of data via nft_data_init()
2022-08-09 20:13:29 +02:00
nft_byteorder.c
netfilter: nf_tables: use the correct get/put helpers
2022-07-11 16:40:46 +02:00
nft_chain_filter.c
netfilter: nf_tables: always release netdev hooks from notifier
2023-05-24 17:32:32 +01:00
nft_chain_nat.c
…
nft_chain_route.c
…
nft_cmp.c
netfilter: nf_tables: upfront validation of data via nft_data_init()
2022-08-09 20:13:29 +02:00
nft_compat.c
netfilter: nf_tables: do not reduce read-only expressions
2022-03-20 00:29:46 +01:00
nft_connlimit.c
netfilter: nf_tables: memcg accounting for dynamically allocated objects
2022-04-05 11:55:46 +02:00
nft_counter.c
netfilter: nf_tables: memcg accounting for dynamically allocated objects
2022-04-05 11:55:46 +02:00
nft_ct.c
netfilter: conntrack: Fix data-races around ct mark
2022-11-18 15:21:00 +01:00
nft_dup_netdev.c
netfilter: nf_tables: do not reduce read-only expressions
2022-03-20 00:29:46 +01:00
nft_dynset.c
netfilter: nf_tables: deactivate anonymous set from preparation phase
2023-05-11 23:03:42 +09:00
nft_exthdr.c
netfilter: nf_tables: use correct integer types
2022-07-11 16:40:46 +02:00
nft_fib_inet.c
netfilter: nft_fib: add reduce support
2022-03-20 00:29:47 +01:00
nft_fib_netdev.c
netfilter: nft_fib: add reduce support
2022-03-20 00:29:47 +01:00
nft_fib.c
netfilter: nft_fib: reverse path filter for policy-based routing on iif
2022-04-11 12:10:09 +02:00
nft_flow_offload.c
netfilter: flowtable: fix nft_flow_route source address for nat case
2022-05-31 23:32:53 +02:00
nft_fwd_netdev.c
netfilter: nf_tables: do not reduce read-only expressions
2022-03-20 00:29:46 +01:00
nft_hash.c
netfilter: nft_hash: track register operations
2022-03-20 00:29:47 +01:00
nft_immediate.c
netfilter: nf_tables: upfront validation of data via nft_data_init()
2022-08-09 20:13:29 +02:00
nft_last.c
netfilter: nft_last: copy content when cloning expression
2023-03-17 08:50:23 +01:00
nft_limit.c
netfilter: nft_limit: Clone packet limits' cost value
2022-05-26 22:50:34 +02:00
nft_log.c
netfilter: nf_tables: do not reduce read-only expressions
2022-03-20 00:29:46 +01:00
nft_lookup.c
netfilter: nf_tables: deactivate anonymous set from preparation phase
2023-05-11 23:03:42 +09:00
nft_masq.c
netfilter: nft_masq: correct length for loading protocol registers
2023-03-22 13:33:42 +01:00
nft_meta.c
netfilter: use get_random_u32 instead of prandom
2022-06-08 12:30:59 +02:00
nft_nat.c
netfilter: nft_nat: correct length for loading protocol registers
2023-03-22 13:33:42 +01:00
nft_numgen.c
netfilter: use get_random_u32 instead of prandom
2022-06-08 12:30:59 +02:00
nft_objref.c
netfilter: nf_tables: deactivate anonymous set from preparation phase
2023-05-11 23:03:42 +09:00
nft_osf.c
netfilter: move from strlcpy with unused retval to strscpy
2022-09-07 16:46:03 +02:00
nft_payload.c
netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits
2023-01-18 11:58:09 +01:00
nft_queue.c
netfilter: nft_queue: only allow supported familes and hooks
2022-07-26 21:12:42 +02:00
nft_quota.c
netfilter: nft_quota: copy content when cloning expression
2023-03-17 08:50:23 +01:00
nft_range.c
netfilter: nf_tables: upfront validation of data via nft_data_init()
2022-08-09 20:13:29 +02:00
nft_redir.c
netfilter: nft_redir: correct value of inet type .maxattrs
2023-03-22 13:33:42 +01:00
nft_reject_inet.c
netfilter: nf_tables: do not reduce read-only expressions
2022-03-20 00:29:46 +01:00
nft_reject_netdev.c
netfilter: nf_tables: do not reduce read-only expressions
2022-03-20 00:29:46 +01:00
nft_reject.c
…
nft_rt.c
netfilter: nf_tables: do not reduce read-only expressions
2022-03-20 00:29:46 +01:00
nft_set_bitmap.c
netfilter: nft_set_bitmap: Fix spelling mistake
2022-07-11 16:40:37 +02:00
nft_set_hash.c
netfilter: nft_dynset: restore set element counter when failing to update
2022-06-27 19:03:37 +02:00
nft_set_pipapo_avx2.c
netfilter: nft_set_pipapo_avx2: remove redundant pointer lt
2021-12-24 16:58:17 +01:00
nft_set_pipapo_avx2.h
…
nft_set_pipapo.c
netfilter: nft_set_pipapo: Actually validate intervals in fields after the first one
2022-11-28 13:17:11 +01:00
nft_set_pipapo.h
…
nft_set_rbtree.c
netfilter: nft_set_rbtree: fix null deref on element insertion
2023-05-24 17:32:48 +01:00
nft_socket.c
cgroup: Replace cgroup->ancestor_ids[] with ->ancestors[]
2022-08-15 11:16:47 -10:00
nft_synproxy.c
netfilter: nf_tables: do not reduce read-only expressions
2022-03-20 00:29:46 +01:00
nft_tproxy.c
netfilter: nft_tproxy: restrict to prerouting hook
2022-08-23 21:24:34 +02:00
nft_tunnel.c
netfilter: nft_tunnel: restrict it to netdev family
2022-08-24 07:43:21 +02:00
nft_xfrm.c
netfilter: nf_tables: use the correct get/put helpers
2022-07-11 16:40:46 +02:00
utils.c
…
x_tables.c
netfilter: move from strlcpy with unused retval to strscpy
2022-09-07 16:46:03 +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
netfilter: x_tables: use correct integer types
2022-07-11 16:40:45 +02:00
xt_connmark.c
netfilter: conntrack: Fix data-races around ct mark
2022-11-18 15:21:00 +01:00
xt_CONNSECMARK.c
…
xt_conntrack.c
…
xt_cpu.c
…
xt_CT.c
netfilter: nf_conntrack: use rcu accessors where needed
2022-07-11 16:25:15 +02:00
xt_dccp.c
…
xt_devgroup.c
…
xt_dscp.c
…
xt_DSCP.c
netfilter: x_tables: use correct integer types
2022-07-11 16:40:45 +02:00
xt_ecn.c
…
xt_esp.c
…
xt_hashlimit.c
proc: remove PDE_DATA() completely
2022-01-22 08:33:37 +02:00
xt_helper.c
…
xt_hl.c
…
xt_HL.c
…
xt_HMARK.c
…
xt_IDLETIMER.c
netfilter: xt_IDLETIMER: replace snprintf in show functions with sysfs_emit
2021-11-08 12:14:05 +01:00
xt_ipcomp.c
…
xt_iprange.c
…
xt_ipvs.c
…
xt_l2tp.c
…
xt_LED.c
…
xt_length.c
netfilter: xt_length: use skb len to match in length_mt6
2023-03-11 13:55:24 +01:00
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
…
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: move from strlcpy with unused retval to strscpy
2022-09-07 16:46:03 +02:00
xt_realm.c
…
xt_recent.c
proc: remove PDE_DATA() completely
2022-01-22 08:33:37 +02:00
xt_REDIRECT.c
…
xt_repldata.h
…
xt_sctp.c
…
xt_SECMARK.c
…
xt_set.c
…
xt_socket.c
netfilter: xt_socket: missing ifdef CONFIG_IP6_NF_IPTABLES dependency
2022-02-13 23:55:48 +01:00
xt_state.c
…
xt_statistic.c
treewide: use get_random_u32() when possible
2022-10-11 17:42:58 -06:00
xt_string.c
…
xt_tcpmss.c
…
xt_TCPMSS.c
netfilter: x_tables: use correct integer types
2022-07-11 16:40:45 +02:00
xt_TCPOPTSTRIP.c
…
xt_tcpudp.c
…
xt_TEE.c
…
xt_time.c
…
xt_TPROXY.c
netfilter: xt_TPROXY: remove pr_debug invocations
2022-07-21 00:56:00 +02:00
xt_TRACE.c
…
xt_u32.c
…