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d005fbb855d3b5660d62ee5a6bd2d99c13ff8cf3
linux/net/netfilter
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Pablo Neira Ayuso d005fbb855 netfilter: conntrack: refetch conntrack after nf_conntrack_update() 
__nf_conntrack_update() might refresh the conntrack object that is
attached to the skbuff. Otherwise, this triggers UAF.

[  633.200434] ==================================================================
[  633.200472] BUG: KASAN: use-after-free in nf_conntrack_update+0x34e/0x770 [nf_conntrack]
[  633.200478] Read of size 1 at addr ffff888370804c00 by task nfqnl_test/6769

[  633.200487] CPU: 1 PID: 6769 Comm: nfqnl_test Not tainted 5.8.0-rc2+ #388
[  633.200490] Hardware name: LENOVO 23259H1/23259H1, BIOS G2ET32WW (1.12 ) 05/30/2012
[  633.200491] Call Trace:
[  633.200499]  dump_stack+0x7c/0xb0
[  633.200526]  ? nf_conntrack_update+0x34e/0x770 [nf_conntrack]
[  633.200532]  print_address_description.constprop.6+0x1a/0x200
[  633.200539]  ? _raw_write_lock_irqsave+0xc0/0xc0
[  633.200568]  ? nf_conntrack_update+0x34e/0x770 [nf_conntrack]
[  633.200594]  ? nf_conntrack_update+0x34e/0x770 [nf_conntrack]
[  633.200598]  kasan_report.cold.9+0x1f/0x42
[  633.200604]  ? call_rcu+0x2c0/0x390
[  633.200633]  ? nf_conntrack_update+0x34e/0x770 [nf_conntrack]
[  633.200659]  nf_conntrack_update+0x34e/0x770 [nf_conntrack]
[  633.200687]  ? nf_conntrack_find_get+0x30/0x30 [nf_conntrack]

Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1436
Fixes: ee04805ff5 ("netfilter: conntrack: make conntrack userspace helpers work again")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-07-03 14:47:03 +02:00
..
ipset
netfilter: ipset: call ip_set_free() instead of kfree()
2020-06-30 19:09:56 +02:00
ipvs
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
core.c
…
Kconfig
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
Makefile
…
nf_conncount.c
…
nf_conntrack_acct.c
…
nf_conntrack_amanda.c
…
nf_conntrack_broadcast.c
…
nf_conntrack_core.c
netfilter: conntrack: refetch conntrack after nf_conntrack_update()
2020-07-03 14:47:03 +02:00
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
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nf_conntrack_helper.c
…
nf_conntrack_irc.c
…
nf_conntrack_labels.c
…
nf_conntrack_netbios_ns.c
…
nf_conntrack_netlink.c
netfilter: ctnetlink: memleak in filter initialization error path
2020-06-10 19:33:34 +02:00
nf_conntrack_pptp.c
netfilter: nf_conntrack_pptp: fix compilation warning with W=1 build
2020-05-27 13:39:08 +02:00
nf_conntrack_proto_dccp.c
…
nf_conntrack_proto_generic.c
…
nf_conntrack_proto_gre.c
…
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
…
nf_conntrack_proto_tcp.c
…
nf_conntrack_proto_udp.c
…
nf_conntrack_proto.c
…
nf_conntrack_sane.c
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nf_conntrack_seqadj.c
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nf_conntrack_sip.c
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nf_conntrack_snmp.c
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nf_conntrack_standalone.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2020-05-01 17:02:27 -07:00
nf_conntrack_tftp.c
…
nf_conntrack_timeout.c
…
nf_conntrack_timestamp.c
…
nf_dup_netdev.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nf_flow_table_core.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +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
…
nf_flow_table_offload.c
net: flow_offload: fix flow_indr_dev_unregister path
2020-06-19 20:12:58 -07:00
nf_internals.h
netfilter: ctnetlink: add kernel side filtering for dump
2020-05-27 22:20:34 +02:00
nf_log_common.c
…
nf_log_netdev.c
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nf_log.c
…
nf_nat_amanda.c
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nf_nat_core.c
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nf_nat_ftp.c
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nf_nat_helper.c
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nf_nat_irc.c
…
nf_nat_masquerade.c
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nf_nat_proto.c
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nf_nat_redirect.c
…
nf_nat_sip.c
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nf_nat_tftp.c
…
nf_queue.c
…
nf_sockopt.c
…
nf_synproxy_core.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nf_tables_api.c
netfilter: nf_tables: hook list memleak in flowtable deletion
2020-06-12 17:48:21 +02:00
nf_tables_core.c
…
nf_tables_offload.c
net: flow_offload: fix flow_indr_dev_unregister path
2020-06-19 20:12:58 -07:00
nf_tables_trace.c
…
nfnetlink_acct.c
…
nfnetlink_cthelper.c
netfilter: nfnetlink_cthelper: unbreak userspace helper support
2020-05-25 20:39:14 +02:00
nfnetlink_cttimeout.c
…
nfnetlink_log.c
…
nfnetlink_osf.c
netfilter: nf_osf: avoid passing pointer to local var
2020-04-29 21:17:57 +02:00
nfnetlink_queue.c
…
nfnetlink.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_bitwise.c
…
nft_byteorder.c
…
nft_chain_filter.c
…
nft_chain_nat.c
…
nft_chain_route.c
…
nft_cmp.c
…
nft_compat.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +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: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +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
…
nft_exthdr.c
…
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
…
nft_flow_offload.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_fwd_netdev.c
…
nft_hash.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_immediate.c
…
nft_limit.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_log.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_lookup.c
…
nft_masq.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_meta.c
…
nft_nat.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +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: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_payload.c
…
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: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
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: nft_set_pipapo: Disable preemption before getting per-CPU pointer
2020-06-08 23:51:06 +02:00
nft_set_pipapo.h
…
nft_set_rbtree.c
netfilter: nft_set_rbtree: Don't account for expired elements on insertion
2020-06-08 20:42:00 +02:00
nft_socket.c
…
nft_synproxy.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_tproxy.c
…
nft_tunnel.c
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
nft_xfrm.c
…
utils.c
…
x_tables.c
…
xt_addrtype.c
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xt_AUDIT.c
…
xt_bpf.c
…
xt_cgroup.c
…
xt_CHECKSUM.c
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xt_CLASSIFY.c
…
xt_cluster.c
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xt_comment.c
…
xt_connbytes.c
…
xt_connlabel.c
…
xt_connlimit.c
…
xt_connmark.c
…
xt_CONNSECMARK.c
…
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
…
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
netfilter: Add MODULE_DESCRIPTION entries to kernel modules
2020-06-25 00:50:31 +02:00
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
…
xt_realm.c
…
xt_recent.c
…
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
…
xt_TPROXY.c
…
xt_TRACE.c
…
xt_u32.c
…