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Jianguo Wu d62df86c17 seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors 
[ Upstream commit 9a3bc8d16e0aacd65c31aaf23a2bced3288a7779 ]

input_action_end_dx4() and input_action_end_dx6() are called NF_HOOK() for
PREROUTING hook, in PREROUTING hook, we should passing a valid indev,
and a NULL outdev to NF_HOOK(), otherwise may trigger a NULL pointer
dereference, as below:

    [74830.647293] BUG: kernel NULL pointer dereference, address: 0000000000000090
    [74830.655633] #PF: supervisor read access in kernel mode
    [74830.657888] #PF: error_code(0x0000) - not-present page
    [74830.659500] PGD 0 P4D 0
    [74830.660450] Oops: 0000 [#1] PREEMPT SMP PTI
    ...
    [74830.664953] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
    [74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter]
    ...
    [74830.689725] Call Trace:
    [74830.690402]  <IRQ>
    [74830.690953]  ? show_trace_log_lvl+0x1c4/0x2df
    [74830.692020]  ? show_trace_log_lvl+0x1c4/0x2df
    [74830.693095]  ? ipt_do_table+0x286/0x710 [ip_tables]
    [74830.694275]  ? __die_body.cold+0x8/0xd
    [74830.695205]  ? page_fault_oops+0xac/0x140
    [74830.696244]  ? exc_page_fault+0x62/0x150
    [74830.697225]  ? asm_exc_page_fault+0x22/0x30
    [74830.698344]  ? rpfilter_mt+0x44/0x15e [ipt_rpfilter]
    [74830.699540]  ipt_do_table+0x286/0x710 [ip_tables]
    [74830.700758]  ? ip6_route_input+0x19d/0x240
    [74830.701752]  nf_hook_slow+0x3f/0xb0
    [74830.702678]  input_action_end_dx4+0x19b/0x1e0
    [74830.703735]  ? input_action_end_t+0xe0/0xe0
    [74830.704734]  seg6_local_input_core+0x2d/0x60
    [74830.705782]  lwtunnel_input+0x5b/0xb0
    [74830.706690]  __netif_receive_skb_one_core+0x63/0xa0
    [74830.707825]  process_backlog+0x99/0x140
    [74830.709538]  __napi_poll+0x2c/0x160
    [74830.710673]  net_rx_action+0x296/0x350
    [74830.711860]  __do_softirq+0xcb/0x2ac
    [74830.713049]  do_softirq+0x63/0x90

input_action_end_dx4() passing a NULL indev to NF_HOOK(), and finally
trigger a NULL dereference in rpfilter_mt()->rpfilter_is_loopback():

    static bool
    rpfilter_is_loopback(const struct sk_buff *skb,
          	       const struct net_device *in)
    {
            // in is NULL
            return skb->pkt_type == PACKET_LOOPBACK ||
          	 in->flags & IFF_LOOPBACK;
    }

Fixes: 7a3f5b0de364 ("netfilter: add netfilter hooks to SRv6 data plane")
Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-06-27 13:49:08 +02:00
..
ila
ila: Remove unnecessary file net/ila.h
2023-08-02 12:28:16 -07:00
netfilter
netfilter: complete validation of user input
2024-04-17 11:19:30 +02:00
addrconf_core.c
ipv6: Ensure natural alignment of const ipv6 loopback and router addresses
2024-02-05 20:14:36 +00:00
addrconf.c
ipv6: annotate data-races around cnf.disable_ipv6
2024-05-17 12:02:24 +02:00
addrlabel.c
ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network
2022-11-07 12:26:15 +00:00
af_inet6.c
bpf: Derive source IP addr via bpf_*_fib_lookup()
2024-03-01 13:35:04 +01:00
ah6.c
net: ipv6: Remove completion function scaffolding
2023-02-13 18:35:15 +08:00
anycast.c
IPv6: add extack info for IPv6 address add/delete
2023-07-28 11:01:56 +01:00
calipso.c
…
datagram.c
inet: introduce inet->inet_flags
2023-08-16 11:09:16 +01:00
esp6_offload.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2023-06-22 18:40:38 -07:00
esp6.c
net: esp: fix bad handling of pages from page_pool
2024-04-03 15:28:35 +02:00
exthdrs_core.c
ipv6: Fix out-of-bounds access in ipv6_find_tlv()
2023-05-24 08:43:39 +01:00
exthdrs_offload.c
…
exthdrs.c
Fix write to cloned skb in ipv6_hop_ioam()
2024-03-01 13:35:10 +01:00
fib6_notifier.c
…
fib6_rules.c
ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action()
2024-05-17 12:02:23 +02:00
fou6.c
…
icmp.c
sysctl-6.6-rc1
2023-08-29 17:39:15 -07:00
inet6_connection_sock.c
net: annotate lockless accesses to sk->sk_err_soft
2023-03-17 08:25:05 +00:00
inet6_hashtables.c
net: remove duplicate INDIRECT_CALLABLE_DECLARE of udp[6]_ehashfn
2023-07-31 13:53:10 -07:00
ioam6_iptunnel.c
ipv6: ioam: block BH from ioam6_output()
2024-06-21 14:38:15 +02:00
ioam6.c
genetlink: start to validate reserved header bytes
2022-08-29 12:47:15 +01:00
ip6_checksum.c
…
ip6_fib.c
ipv6: fix possible race in __fib6_drop_pcpu_from()
2024-06-21 14:38:20 +02:00
ip6_flowlabel.c
ipv6: flowlabel: do not disable BH where not needed
2023-03-21 21:32:18 -07:00
ip6_gre.c
net: add netdev_lockdep_set_classes() to virtual drivers
2024-04-13 13:07:30 +02:00
ip6_icmp.c
…
ip6_input.c
ipv6: annotate data-races around cnf.disable_ipv6
2024-05-17 12:02:24 +02:00
ip6_offload.c
net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb
2024-05-17 12:02:07 +02:00
ip6_offload.h
…
ip6_output.c
ipv6: prevent NULL dereference in ip6_output()
2024-05-17 12:02:24 +02:00
ip6_tunnel.c
net: add netdev_lockdep_set_classes() to virtual drivers
2024-04-13 13:07:30 +02:00
ip6_udp_tunnel.c
…
ip6_vti.c
net: add netdev_lockdep_set_classes() to virtual drivers
2024-04-13 13:07:30 +02:00
ip6mr.c
net: ipv4, ipv6: fix IPSTATS_MIB_OUTOCTETS increment duplicated
2023-08-30 09:44:09 +01:00
ipcomp6.c
xfrm: ipcomp: add extack to ipcomp{4,6}_init_state
2022-09-29 07:18:00 +02:00
ipv6_sockglue.c
net: selectively purge error queue in IP_RECVERR / IPV6_RECVERR
2023-08-20 15:17:47 +01:00
Kconfig
ipv6: fix indentation of a config attribute
2023-08-16 10:03:08 +01:00
Makefile
…
mcast_snoop.c
…
mcast.c
net: fix IPSTATS_MIB_OUTPKGS increment in OutForwDatagrams.
2024-04-03 15:28:39 +02:00
mip6.c
xfrm: mip6: add extack to mip6_destopt_init_state, mip6_rthdr_init_state
2022-09-29 07:18:01 +02:00
ndisc.c
net: fix IPSTATS_MIB_OUTPKGS increment in OutForwDatagrams.
2024-04-03 15:28:39 +02:00
netfilter.c
netfilter: Use l3mdev flow key when re-routing mangled packets
2022-05-16 13:03:29 +02:00
output_core.c
treewide: use get_random_u32_{above,below}() instead of manual loop
2022-11-18 02:15:22 +01:00
ping.c
bpf: Propagate modified uaddrlen from cgroup sockaddr programs
2024-01-31 16:19:04 -08:00
proc.c
net: fix IPSTATS_MIB_OUTPKGS increment in OutForwDatagrams.
2024-04-03 15:28:39 +02:00
protocol.c
…
raw.c
net: fix IPSTATS_MIB_OUTPKGS increment in OutForwDatagrams.
2024-04-03 15:28:39 +02:00
reassembly.c
net: ipv6: fix wrong start position when receive hop-by-hop fragment
2024-06-12 11:11:51 +02:00
route.c
ipv6: prevent possible NULL dereference in rt6_probe()
2024-06-27 13:49:06 +02:00
rpl_iptunnel.c
ipv6: rpl: Remove redundant skb_dst_drop().
2023-07-12 17:12:29 -07:00
rpl.c
ipv6: rpl: Remove pskb(_may)?_pull() in ipv6_rpl_srh_rcv().
2023-06-19 11:32:58 -07:00
seg6_hmac.c
ipv6: sr: fix memleak in seg6_hmac_init_algo
2024-06-12 11:12:48 +02:00
seg6_iptunnel.c
ipv6: sr: block BH in seg6_output_core() and seg6_input_core()
2024-06-21 14:38:16 +02:00
seg6_local.c
seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors
2024-06-27 13:49:08 +02:00
seg6.c
ipv6: sr: fix invalid unregister error path
2024-06-12 11:11:53 +02:00
sit.c
net: add netdev_lockdep_set_classes() to virtual drivers
2024-04-13 13:07:30 +02:00
syncookies.c
dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses.
2023-11-20 11:59:35 +01:00
sysctl_net_ipv6.c
networking: Update to register_net_sysctl_sz
2023-08-15 15:26:18 -07:00
tcp_ipv6.c
tcp: fix race in tcp_v6_syn_recv_sock()
2024-06-21 14:38:33 +02:00
tcpv6_offload.c
net: Make gro complete function to return void
2023-05-31 09:50:17 +01:00
tunnel6.c
…
udp_impl.h
tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct().
2022-10-12 17:50:37 -07:00
udp_offload.c
net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb
2024-05-17 12:02:07 +02:00
udp.c
udp: Avoid call to compute_score on multiple sites
2024-06-12 11:11:42 +02:00
udplite.c
udplite: remove UDPLITE_BIT
2023-11-20 11:58:56 +01:00
xfrm6_input.c
xfrm: Preserve vlan tags for transport mode software GRO
2024-05-17 12:02:20 +02:00
xfrm6_output.c
…
xfrm6_policy.c
xfrm6: check ip6_dst_idev() return value in xfrm6_get_saddr()
2024-06-27 13:49:06 +02:00
xfrm6_protocol.c
…
xfrm6_state.c
…
xfrm6_tunnel.c
xfrm: tunnel: add extack to ipip_init_state, xfrm6_tunnel_init_state
2022-09-29 07:18:00 +02:00