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Florian Westphal 0c58c9f9c5 netfilter: x_tables: fix compat match/target pad out-of-bound write 
commit b29c457a65 upstream.

xt_compat_match/target_from_user doesn't check that zeroing the area
to start of next rule won't write past end of allocated ruleset blob.

Remove this code and zero the entire blob beforehand.

Reported-by: syzbot+cfc0247ac173f597aaaa@syzkaller.appspotmail.com
Reported-by: Andy Nguyen <theflow@google.com>
Fixes: 9fa492cdc1 ("[NETFILTER]: x_tables: simplify compat API")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-16 11:59:12 +02:00
..
netfilter
netfilter: x_tables: fix compat match/target pad out-of-bound write
2021-04-16 11:59:12 +02:00
af_inet.c
gso_segment: Reset skb->mac_len after modifying network header
2018-09-29 03:07:32 -07:00
ah4.c
ipsec: check return value of skb_to_sgvec always
2018-04-13 19:48:31 +02:00
arp.c
arp: fix arp_filter on l3slave devices
2018-04-13 19:48:32 +02:00
cipso_ipv4.c
netlabel: cope with NULL catmap
2020-05-20 08:15:39 +02:00
datagram.c
inet: stop leaking jiffies on the wire
2019-11-10 11:23:29 +01:00
devinet.c
devinet: fix memleak in inetdev_init()
2020-06-11 09:22:21 +02:00
esp4.c
ipsec: check return value of skb_to_sgvec always
2018-04-13 19:48:31 +02:00
fib_frontend.c
ipv4: Ignore ECN bits for fib lookups in fib_compute_spec_dst()
2021-01-12 19:49:02 +01:00
fib_lookup.h
…
fib_rules.c
…
fib_semantics.c
net: Fix the arp error in some cases
2020-06-30 15:38:39 -04:00
fib_trie.c
ipv4: Silence suspicious RCU usage warning
2020-08-21 11:01:55 +02:00
fou.c
net: fou: do not use guehdr after iptunnel_pull_offloads in gue_udp_recv
2019-04-27 09:34:40 +02:00
gre_demux.c
gre: fix uninit-value in __iptunnel_pull_header
2020-03-20 09:07:38 +01:00
gre_offload.c
…
icmp.c
net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
2021-03-03 17:44:46 +01:00
igmp.c
igmp: fix memory leak in igmpv3_del_delrec()
2019-08-04 09:33:33 +02:00
inet_connection_sock.c
net: refactor bind_bucket fastreuse into helper
2020-09-12 11:47:38 +02:00
inet_diag.c
inet_diag: Fix error path to cancel the meseage in inet_req_diag_fill()
2020-11-24 13:02:54 +01:00
inet_fragment.c
net: IP defrag: encapsulate rbtree defrag code into callable functions
2019-05-02 09:32:06 +02:00
inet_hashtables.c
net: initialize fastreuse on inet_inherit_port
2020-09-12 11:47:38 +02:00
inet_timewait_sock.c
soreuseport: initialise timewait reuseport field
2018-05-16 10:08:41 +02:00
inetpeer.c
net: ipv4: use a dedicated counter for icmp_v4 redirect packets
2019-02-23 09:05:59 +01:00
ip_forward.c
…
ip_fragment.c
net: IP defrag: encapsulate rbtree defrag code into callable functions
2019-05-02 09:32:06 +02:00
ip_gre.c
ip_gre: fix parsing gre header in ipgre_err
2019-11-25 09:52:23 +01:00
ip_input.c
vrf: check accept_source_route on the original netdevice
2019-04-17 08:36:45 +02:00
ip_options.c
vrf: check accept_source_route on the original netdevice
2019-04-17 08:36:45 +02:00
ip_output.c
net: ip: always refragment ip defragmented packets
2021-01-17 13:57:53 +01:00
ip_sockglue.c
ip: on queued skb use skb_header_pointer instead of pskb_may_pull
2019-01-23 08:10:54 +01:00
ip_tunnel_core.c
ip_tunnel: don't force DF when MTU is locked
2018-11-23 08:20:34 +01:00
ip_tunnel.c
net: fix pmtu check in nopmtudisc mode
2021-01-17 13:57:53 +01:00
ip_vti.c
ip_vti: receive ipip packet by calling ip_tunnel_rcv
2020-06-03 08:16:45 +02:00
ipcomp.c
…
ipconfig.c
ipconfig: Correctly initialise ic_nameservers
2018-08-03 07:55:24 +02:00
ipip.c
net: ipip: fix wrong address family in init error path
2020-06-03 08:16:23 +02:00
ipmr.c
ipv4: Fix potential Spectre v1 vulnerability
2019-01-09 16:16:39 +01:00
Kconfig
vti[6]: fix packet tx through bpf_redirect() in XinY cases
2020-04-02 17:20:34 +02:00
Makefile
…
netfilter.c
…
ping.c
ipv4: fill fl4_icmp_{type,code} in ping_v4_sendmsg
2020-07-22 09:10:47 +02:00
proc.c
tcp: tcp_fragment() should apply sane memory limits
2019-06-17 19:53:32 +02:00
protocol.c
…
raw.c
net: ipv4: emulate READ_ONCE() on ->hdrincl bit-field in raw_sendmsg()
2020-05-02 17:22:56 +02:00
route.c
rt_cpu_seq_next should increase position index
2020-10-01 20:40:04 +02:00
syncookies.c
net: Update window_clamp if SOCK_RCVBUF is set
2020-11-18 18:26:29 +01:00
sysctl_net_ipv4.c
tcp: add tcp_min_snd_mss sysctl
2019-06-17 19:53:33 +02:00
tcp_bbr.c
tcp: only postpone PROBE_RTT if RTT is < current min_rtt estimate
2020-11-24 13:02:59 +01:00
tcp_bic.c
…
tcp_cdg.c
…
tcp_cong.c
tcp: make sure listeners don't initialize congestion-control state
2020-07-22 09:10:48 +02:00
tcp_cubic.c
tcp_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT
2020-06-30 15:38:39 -04:00
tcp_dctcp.c
tcp: Ensure DCTCP reacts to losses
2019-04-17 08:36:45 +02:00
tcp_diag.c
…
tcp_fastopen.c
…
tcp_highspeed.c
…
tcp_htcp.c
…
tcp_hybla.c
…
tcp_illinois.c
net/tcp/illinois: replace broken algorithm reference link
2018-05-30 07:50:33 +02:00
tcp_input.c
tcp: fix to update snd_wl1 in bulk receiver fast path
2020-10-29 09:05:32 +01:00
tcp_ipv4.c
tcp: md5: refine tcp_md5_do_add()/tcp_md5_hash_key() barriers
2020-07-22 09:10:48 +02:00
tcp_lp.c
…
tcp_metrics.c
…
tcp_minisocks.c
tcp: do not restart timewait timer on rst reception
2018-09-15 09:42:56 +02:00
tcp_nv.c
tcp_nv: fix potential integer overflow in tcpnv_acked
2018-05-30 07:50:22 +02:00
tcp_offload.c
…
tcp_output.c
tcp: fix cwnd-limited bug for TSO deferral where we send nothing
2020-12-29 13:44:48 +01:00
tcp_probe.c
tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"
2018-09-15 09:43:01 +02:00
tcp_rate.c
…
tcp_recovery.c
…
tcp_scalable.c
…
tcp_timer.c
tcp: fix SNMP TCP timeout under-estimation
2019-12-21 10:41:17 +01:00
tcp_vegas.c
…
tcp_vegas.h
…
tcp_veno.c
…
tcp_westwood.c
…
tcp_yeah.c
…
tcp.c
tcp: md5: allow changing MD5 keys in all socket states
2020-07-22 09:10:48 +02:00
tunnel4.c
…
udp_diag.c
…
udp_impl.h
…
udp_offload.c
net: Fix gro aggregation for udp encaps with zero csum
2021-03-17 16:10:13 +01:00
udp_tunnel.c
…
udp.c
net: udp: Fix wrong clean up for IS_UDPLITE macro
2020-07-31 16:44:06 +02:00
udplite.c
…
xfrm4_input.c
…
xfrm4_mode_beet.c
…
xfrm4_mode_transport.c
…
xfrm4_mode_tunnel.c
…
xfrm4_output.c
xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish
2020-05-02 17:23:09 +02:00
xfrm4_policy.c
xfrm4: Fix uninitialized memory read in _decode_session4
2019-05-25 18:26:55 +02:00
xfrm4_protocol.c
…
xfrm4_state.c
…
xfrm4_tunnel.c
…