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Denys Fedoryshchenko ecd15dd7e4 netfilter: nfnetlink: Fix use after free when it fails to process batch 
This bug manifests when calling the nft command line tool without
nf_tables kernel support.

kernel message:
[   44.071555] Netfilter messages via NETLINK v0.30.
[   44.072253] BUG: unable to handle kernel NULL pointer dereference at 0000000000000119
[   44.072264] IP: [<ffffffff8171db1f>] netlink_getsockbyportid+0xf/0x70
[   44.072272] PGD 7f2b74067 PUD 7f2b73067 PMD 0
[   44.072277] Oops: 0000 [#1] SMP
[...]
[   44.072369] Call Trace:
[   44.072373]  [<ffffffff8171fd81>] netlink_unicast+0x91/0x200
[   44.072377]  [<ffffffff817206c9>] netlink_ack+0x99/0x110
[   44.072381]  [<ffffffffa004b951>] nfnetlink_rcv+0x3c1/0x408 [nfnetlink]
[   44.072385]  [<ffffffff8171fde3>] netlink_unicast+0xf3/0x200
[   44.072389]  [<ffffffff817201ef>] netlink_sendmsg+0x2ff/0x740
[   44.072394]  [<ffffffff81044752>] ? __mmdrop+0x62/0x90
[   44.072398]  [<ffffffff816dafdb>] sock_sendmsg+0x8b/0xc0
[   44.072403]  [<ffffffff812f1af5>] ? copy_user_enhanced_fast_string+0x5/0x10
[   44.072406]  [<ffffffff816dbb6c>] ? move_addr_to_kernel+0x2c/0x50
[   44.072410]  [<ffffffff816db423>] ___sys_sendmsg+0x3c3/0x3d0
[   44.072415]  [<ffffffff811301ba>] ? handle_mm_fault+0xa9a/0xc60
[   44.072420]  [<ffffffff811362d6>] ? mmap_region+0x166/0x5a0
[   44.072424]  [<ffffffff817da84c>] ? __do_page_fault+0x1dc/0x510
[   44.072428]  [<ffffffff812b8b2c>] ? apparmor_capable+0x1c/0x60
[   44.072435]  [<ffffffff817d6e9a>] ? _raw_spin_unlock_bh+0x1a/0x20
[   44.072439]  [<ffffffff816dfc86>] ? release_sock+0x106/0x150
[   44.072443]  [<ffffffff816dc212>] __sys_sendmsg+0x42/0x80
[   44.072446]  [<ffffffff816dc262>] SyS_sendmsg+0x12/0x20
[   44.072450]  [<ffffffff817df616>] system_call_fastpath+0x1a/0x1f

Signed-off-by: Denys Fedoryshchenko <nuclearcat@nuclearcat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-05-04 15:14:08 +02:00
..
ipset
netfilter: Convert uses of __constant_<foo> to <foo>
2014-03-13 14:13:19 +01:00
ipvs
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
2014-03-17 15:06:24 -04:00
core.c
netfilter: pass hook ops to hookfn
2013-10-14 11:29:31 +02:00
Kconfig
netfilter: nf_tables: add reject module for NFPROTO_INET
2014-02-06 09:44:18 +01:00
Makefile
netfilter: nf_tables: add reject module for NFPROTO_INET
2014-02-06 09:44:18 +01:00
nf_conntrack_acct.c
netfilter: introduce nf_conn_acct structure
2013-11-03 21:48:49 +01:00
nf_conntrack_amanda.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_broadcast.c
netfilter: nf_conntrack: nf_conntrack snmp helper
2011-01-18 18:12:24 +01:00
nf_conntrack_core.c
netfilter: nf_conntrack: initialize net.ct.generation
2014-04-14 10:35:28 +02:00
nf_conntrack_ecache.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_expect.c
netfilter: conntrack: seperate expect locking from nf_conntrack_lock
2014-03-07 11:41:01 +01:00
nf_conntrack_extend.c
netfilter: nf_ct_ext: support variable length extensions
2012-06-16 15:08:49 +02:00
nf_conntrack_ftp.c
netfilter: Implement RFC 1123 for FTP conntrack
2013-05-27 13:32:43 +02:00
nf_conntrack_h323_asn1.c
netfilter: h323: bug in parsing of ASN1 SEQOF field
2011-04-04 15:21:02 +02:00
nf_conntrack_h323_main.c
netfilter: conntrack: seperate expect locking from nf_conntrack_lock
2014-03-07 11:41:01 +01:00
nf_conntrack_h323_types.c
…
nf_conntrack_helper.c
netfilter: conntrack: remove central spinlock nf_conntrack_lock
2014-03-07 11:41:13 +01:00
nf_conntrack_irc.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_l3proto_generic.c
…
nf_conntrack_labels.c
netfilter: connlabels: remove unneeded includes
2013-07-31 16:39:18 +02:00
nf_conntrack_netbios_ns.c
netfilter: nf_conntrack: nf_conntrack snmp helper
2011-01-18 18:12:24 +01:00
nf_conntrack_netlink.c
netfilter: ctnetlink: don't add null bindings if no nat requested
2014-04-29 20:49:08 +02:00
nf_conntrack_pptp.c
netfilter: nf_conntrack: flush net_gre->keymap_list only from gre helper
2014-04-08 10:56:12 +02:00
nf_conntrack_proto_dccp.c
netfilter: nf_conntrack_dccp: fix skb_header_pointer API usages
2014-01-06 17:40:02 +01:00
nf_conntrack_proto_generic.c
netfilter: nf_conntrack: generalize nf_ct_l4proto_net
2012-07-04 19:37:22 +02:00
nf_conntrack_proto_gre.c
netfilter: nf_conntrack: flush net_gre->keymap_list only from gre helper
2014-04-08 10:56:12 +02:00
nf_conntrack_proto_sctp.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_proto_tcp.c
netfilter: add SYNPROXY core/target
2013-08-28 00:27:54 +02:00
nf_conntrack_proto_udp.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_proto_udplite.c
netfilter: nf_log: prepare net namespace support for loggers
2013-04-05 20:12:54 +02:00
nf_conntrack_proto.c
netfilter: nf_conntrack: remove dead code
2014-01-03 23:41:37 +01:00
nf_conntrack_sane.c
netfilter: nf_ct_helper: better logging for dropped packets
2013-02-19 02:48:05 +01:00
nf_conntrack_seqadj.c
netfilter: only warn once on wrong seqadj usage
2014-01-06 14:23:17 +01:00
nf_conntrack_sip.c
netfilter: conntrack: seperate expect locking from nf_conntrack_lock
2014-03-07 11:41:01 +01:00
nf_conntrack_snmp.c
netfilter: nf_ct_snmp: add include file
2013-01-18 00:28:18 +01:00
nf_conntrack_standalone.c
net: Convert uses of typedef ctl_table to struct ctl_table
2013-06-13 02:36:09 -07:00
nf_conntrack_tftp.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_conntrack_timeout.c
netfilter: nf_ct_timeout: move initialization out of pernet_operations
2013-01-23 12:56:02 +01:00
nf_conntrack_timestamp.c
netfilter: nf_ct_timestamp: Fix BUG_ON after netns deletion
2013-12-20 14:58:29 +01:00
nf_internals.h
net: misc: Remove extern from function prototypes
2013-10-19 19:12:11 -04:00
nf_log.c
net: Convert uses of typedef ctl_table to struct ctl_table
2013-06-13 02:36:09 -07:00
nf_nat_amanda.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
nf_nat_core.c
netfilter: ctnetlink: force null nat binding on insert
2014-02-18 00:13:51 +01:00
nf_nat_ftp.c
netfilter: nf_ct_helper: better logging for dropped packets
2013-02-19 02:48:05 +01:00
nf_nat_helper.c
netfilter: nf_conntrack: make sequence number adjustments usuable without NAT
2013-08-28 00:26:48 +02:00
nf_nat_irc.c
netfilter: nf_nat: fix access to uninitialized buffer in IRC NAT helper
2014-01-06 14:17:17 +01:00
nf_nat_proto_common.c
netfilter: nf_nat: add full port randomization support
2014-01-03 23:41:26 +01:00
nf_nat_proto_dccp.c
netfilter: add protocol independent NAT core
2012-08-30 03:00:14 +02:00
nf_nat_proto_sctp.c
net/sctp: Refactor SCTP skb checksum computation
2013-07-27 20:07:15 -07:00
nf_nat_proto_tcp.c
netfilter: add protocol independent NAT core
2012-08-30 03:00:14 +02:00
nf_nat_proto_udp.c
netfilter: add protocol independent NAT core
2012-08-30 03:00:14 +02:00
nf_nat_proto_udplite.c
netfilter: add protocol independent NAT core
2012-08-30 03:00:14 +02:00
nf_nat_proto_unknown.c
netfilter: add protocol independent NAT core
2012-08-30 03:00:14 +02:00
nf_nat_sip.c
netfilter: nf_ct_sip: consolidate NAT hook functions
2013-10-01 12:47:09 +02:00
nf_nat_tftp.c
netfilter: nf_ct_helper: better logging for dropped packets
2013-02-19 02:48:05 +01:00
nf_queue.c
netfilter: move skb_gso_segment into nfnetlink_queue module
2013-04-29 20:09:05 +02:00
nf_sockopt.c
…
nf_synproxy_core.c
netfilter: nf_conntrack: don't release a conntrack with non-zero refcnt
2014-02-05 17:46:06 +01:00
nf_tables_api.c
netfilter: nf_tables: fix wrong format in request_module()
2014-04-03 23:52:50 +02:00
nf_tables_core.c
netfilter: nf_tables: fix nft_cmp_fast failure on big endian for size < 4
2014-04-14 10:38:02 +02:00
nf_tables_inet.c
netfilter: nf_tables: fix error path in the init functions
2014-01-09 23:25:48 +01:00
nfnetlink_acct.c
netfilter: nfnetlink_acct: fix incomplete dumping of objects
2013-06-05 12:36:36 +02:00
nfnetlink_cthelper.c
netfilter: check return code from nla_parse_tested
2013-06-20 11:20:13 +02:00
nfnetlink_cttimeout.c
netfilter: cttimeout: allow to set/get default protocol timeouts
2013-10-01 13:17:39 +02:00
nfnetlink_log.c
netfilter: nfnetlink_log: remove unused code
2014-02-25 11:30:01 +01:00
nfnetlink_queue_core.c
core, nfqueue, openvswitch: Orphan frags in skb_zerocopy and handle errors
2014-03-27 15:29:38 -04:00
nfnetlink_queue_ct.c
netfilter: nf_conntrack: make sequence number adjustments usuable without NAT
2013-08-28 00:26:48 +02:00
nfnetlink.c
netfilter: nfnetlink: Fix use after free when it fails to process batch
2014-05-04 15:14:08 +02:00
nft_bitwise.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_byteorder.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_cmp.c
netfilter: nf_tables: fix nft_cmp_fast failure on big endian for size < 4
2014-04-14 10:38:02 +02:00
nft_compat.c
netfilter: nf_tables: restore context for expression destructors
2014-03-08 12:35:17 +01:00
nft_counter.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_ct.c
netfilter: nft_ct: remove family from struct nft_ct
2014-03-08 12:35:19 +01:00
nft_expr_template.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_exthdr.c
netfilter: nft_exthdr: call ipv6_find_hdr() with explicitly initialized offset
2013-12-20 11:25:10 +01:00
nft_hash.c
netfilter: Add missing vmalloc.h include to nft_hash.c
2014-03-18 23:12:02 -04:00
nft_immediate.c
netfilter: nf_tables: restore context for expression destructors
2014-03-08 12:35:17 +01:00
nft_limit.c
netfilter: nf_tables: expression ops overloading
2013-10-14 17:16:08 +02:00
nft_log.c
netfilter: nf_tables: restore context for expression destructors
2014-03-08 12:35:17 +01:00
nft_lookup.c
netfilter: nf_tables: restore notifications for anonymous set destruction
2014-03-08 12:35:18 +01:00
nft_meta.c
netfilter: nft_meta: fix typo "CONFIG_NET_CLS_ROUTE"
2014-02-14 11:37:34 +01:00
nft_nat.c
netfilter: nft_nat: fix family validation
2014-03-08 12:35:19 +01:00
nft_payload.c
netfilter: nf_tables: check if payload length is a power of 2
2014-02-17 11:21:17 +01:00
nft_queue.c
netfilter: nf_tables: fix log/queue expressions for NFPROTO_INET
2014-02-06 11:41:38 +01:00
nft_rbtree.c
netfilter: nft_rbtree: fix data handling of end interval elements
2014-02-07 14:22:06 +01:00
nft_reject_inet.c
netfilter: nft_reject_inet: fix unintended fall-through in switch-statatement
2014-02-14 11:37:33 +01:00
nft_reject.c
netfilter: nft_reject: split up reject module into IPv4 and IPv6 specifc parts
2014-02-06 09:44:10 +01:00
x_tables.c
netfilter: x_tables: fix ordering of jumpstack allocation and table update
2013-10-22 10:11:29 +02:00
xt_addrtype.c
netfilter: xt_addrtype: fix trivial typo
2013-07-31 16:36:25 +02:00
xt_AUDIT.c
netfilter: Convert uses of __constant_<foo> to <foo>
2014-03-13 14:13:19 +01:00
xt_bpf.c
netfilter: x_tables: add xt_bpf match
2013-01-21 12:20:19 +01:00
xt_cgroup.c
netfilter: x_tables: allow to use cgroup match for LOCAL_IN nf hooks
2014-04-03 23:52:17 +02:00
xt_CHECKSUM.c
…
xt_CLASSIFY.c
netfilter: xt_CLASSIFY: add ARP support, allow CLASSIFY target on any table
2010-11-15 13:57:56 +01:00
xt_cluster.c
…
xt_comment.c
…
xt_connbytes.c
netfilter: introduce nf_conn_acct structure
2013-11-03 21:48:49 +01:00
xt_connlabel.c
netfilter: add connlabel conntrack extension
2013-01-18 00:28:15 +01:00
xt_connlimit.c
netfilter: connlimit: move lock array out of struct connlimit_data
2014-04-03 23:52:13 +02:00
xt_connmark.c
netfilter: Fix FSF address in file headers
2013-12-06 12:37:57 -05:00
xt_CONNSECMARK.c
…
xt_conntrack.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
xt_cpu.c
netfilter: xtables: add missing aliases for autoloading via iptables
2011-01-18 06:33:54 +01:00
xt_CT.c
netfilter: nf_conntrack: don't release a conntrack with non-zero refcnt
2014-02-05 17:46:06 +01:00
xt_dccp.c
…
xt_devgroup.c
netfilter: xtables: add device group match
2011-02-03 00:05:43 +01:00
xt_dscp.c
…
xt_DSCP.c
netfilter: IPv6: fix DSCP mangle code
2011-05-10 10:00:21 +02:00
xt_ecn.c
netfilter: xtables: collapse conditions in xt_ecn
2011-12-27 20:45:25 +01:00
xt_esp.c
…
xt_hashlimit.c
Revert "netfilter: avoid get_random_bytes calls"
2014-01-06 14:00:55 +01:00
xt_helper.c
…
xt_hl.c
netfilter: Reduce switch/case indent
2011-07-01 16:11:15 -07:00
xt_HL.c
netfilter: Reduce switch/case indent
2011-07-01 16:11:15 -07:00
xt_HMARK.c
ipv6: Move ipv6_find_hdr() out of Netfilter code.
2012-11-09 17:05:07 -08:00
xt_IDLETIMER.c
netfilter: Remove unnecessary OOM logging messages
2011-11-01 09:19:49 +01:00
xt_ipcomp.c
netfilter: xt_ipcomp: Use ntohs to ease sparse warning
2014-02-19 11:41:25 +01:00
xt_iprange.c
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2011-02-04 14:28:58 -08:00
xt_ipvs.c
ipvs: API change to avoid rescan of IPv6 exthdr
2012-09-28 11:34:33 +09:00
xt_l2tp.c
netfilter: introduce l2tp match extension
2014-01-09 21:36:39 +01:00
xt_LED.c
netfilter: xtables: add missing aliases for autoloading via iptables
2011-01-18 06:33:54 +01:00
xt_length.c
…
xt_limit.c
netfilter: add my copyright statements
2013-04-18 20:27:55 +02:00
xt_LOG.c
netfilter: xt_LOG: fix mark logging for IPv6 packets
2013-05-29 12:29:18 +02:00
xt_mac.c
netfilter: Convert compare_ether_addr to ether_addr_equal
2012-05-09 20:49:18 -04:00
xt_mark.c
…
xt_multiport.c
…
xt_nat.c
netfilter: xt_nat: fix incorrect hooks for SNAT and DNAT targets
2012-10-15 13:39:12 +02:00
xt_NETMAP.c
netfilter: combine ipt_NETMAP and ip6t_NETMAP
2012-09-21 12:11:08 +02:00
xt_nfacct.c
netfilter: xtables: add nfacct match to support extended accounting
2011-12-25 02:43:17 +01:00
xt_NFLOG.c
netfilter: log: netns NULL ptr bug when calling from conntrack
2013-05-15 14:11:07 +02:00
xt_NFQUEUE.c
netfilter: xt_NFQUEUE: separate reusable code
2013-12-07 23:20:45 +01:00
xt_osf.c
netfilter: Add {ipt,ip6t}_osf aliases for xt_osf
2014-04-03 23:52:22 +02:00
xt_owner.c
userns: xt_owner: Add basic user namespace support.
2012-08-14 21:55:30 -07:00
xt_physdev.c
…
xt_pkttype.c
…
xt_policy.c
…
xt_quota.c
net: Fix files explicitly needing to include module.h
2011-10-31 19:30:28 -04:00
xt_rateest.c
net_sched: add 64bit rate estimators
2013-06-11 02:51:03 -07:00
xt_RATEEST.c
Revert "netfilter: avoid get_random_bytes calls"
2014-01-06 14:00:55 +01:00
xt_realm.c
…
xt_recent.c
Revert "netfilter: avoid get_random_bytes calls"
2014-01-06 14:00:55 +01:00
xt_REDIRECT.c
netfilter: combine ipt_REDIRECT and ip6t_REDIRECT
2012-09-21 12:12:05 +02:00
xt_repldata.h
…
xt_sctp.c
…
xt_SECMARK.c
secmark: make secmark object handling generic
2010-10-21 10:12:48 +11:00
xt_set.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-11-15 16:47:22 -08:00
xt_socket.c
netfilter: xt_socket: use sock_gen_put()
2013-10-17 10:27:25 +02:00
xt_state.c
…
xt_statistic.c
net: replace macros net_random and net_srandom with direct calls to prandom
2014-01-14 15:15:25 -08:00
xt_string.c
…
xt_tcpmss.c
…
xt_TCPMSS.c
netfilter: xt_TCPMSS: lookup route from proper net namespace
2013-09-27 16:18:23 +02:00
xt_TCPOPTSTRIP.c
netfilter: xt_TCPOPTSTRIP: fix possible off by one access
2013-08-01 11:45:15 +02:00
xt_tcpudp.c
…
xt_TEE.c
net: pass info struct via netdevice notifier
2013-05-28 13:11:01 -07:00
xt_time.c
netfilter: xt_time: add support to ignore day transition
2012-09-24 14:29:01 +02:00
xt_TPROXY.c
ipv6: make lookups simpler and faster
2013-10-09 00:01:25 -04:00
xt_TRACE.c
…
xt_u32.c
…