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Pablo Neira AyusoandGreg Kroah-Hartman d27e2798e3 netfilter: nf_tables: set transport offset from mac header for netdev/egress 
[ Upstream commit 0ae8e4cca7 ]

Before this patch, transport offset (pkt->thoff) provides an offset
relative to the network header. This is fine for the inet families
because skb->data points to the network header in such case. However,
from netdev/egress, skb->data points to the mac header (if available),
thus, pkt->thoff is missing the mac header length.

Add skb_network_offset() to the transport offset (pkt->thoff) for
netdev, so transport header mangling works as expected. Adjust payload
fast eval function to use skb->data now that pkt->thoff provides an
absolute offset. This explains why users report that matching on
egress/netdev works but payload mangling does not.

This patch implicitly fixes payload mangling for IPv4 packets in
netdev/egress given skb_store_bits() requires an offset from skb->data
to reach the transport header.

I suspect that nft_exthdr and the trace infra were also broken from
netdev/egress because they also take skb->data as start, and pkt->thoff
was not correct.

Note that IPv6 is fine because ipv6_find_hdr() already provides a
transport offset starting from skb->data, which includes
skb_network_offset().

The bridge family also uses nft_set_pktinfo_ipv4_validate(), but there
skb_network_offset() is zero, so the update in this patch does not alter
the existing behaviour.

Fixes: 42df6e1d22 ("netfilter: Introduce egress hook")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-10 17:16:47 +01:00
..
9p
9p: Add additional debug flags and open modes
2023-03-27 02:33:48 +00:00
bluetooth
Bluetooth: MGMT/SMP: Fix address type when using SMP over BREDR/LE
2024-01-01 12:42:40 +00:00
caif
net: caif: Remove unused declaration cfsrvl_ctrlcmd()
2023-08-10 18:24:48 -07:00
iucv
…
mana
net: mana: Fix oversized sge0 for GSO packets
2023-10-05 11:45:06 +02:00
netfilter
netfilter: nf_tables: set transport offset from mac header for netdev/egress
2024-01-10 17:16:47 +01:00
netns
xfrm: fix a data-race in xfrm_gen_index()
2023-09-13 09:20:28 +02:00
nfc
…
page_pool
page_pool: fix documentation typos
2023-10-04 14:22:27 -07:00
phonet
net: ioctl: Use kernel memory on protocol ioctl callbacks
2023-06-15 22:33:26 -07:00
sctp
sctp: Remove unused declaration sctp_backlog_migrate()
2023-08-10 19:31:52 -07:00
tc_act
net: sched: do not offload flows with a helper in act_ct
2023-11-28 17:19:54 +00:00
6lowpan.h
…
act_api.h
net/sched: Rename user cookie and act cookie
2023-02-20 16:46:10 -08:00
addrconf.h
net: ipv6: support reporting otherwise unknown prefix flags in RTM_NEWPREFIX
2023-12-20 17:01:45 +01:00
af_ieee802154.h
…
af_rxrpc.h
rxrpc: Fix timeout of a call that hasn't yet been granted a channel
2023-05-01 07:43:19 +01:00
af_unix.h
bpf, sockmap: af_unix stream sockets need to hold ref for pair sock
2023-12-08 08:52:23 +01:00
af_vsock.h
af_vsock: Remove unused declaration vsock_release_pending()/vsock_init_tap()
2023-08-04 15:34:03 -07:00
ah.h
…
amt.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
arp.h
neighbour: switch to standard rcu, instead of rcu_bh
2023-03-21 21:32:18 -07:00
atmclip.h
…
ax25.h
x25: preserve const qualifier in [a]x25_sk()
2023-03-18 12:23:34 +00:00
ax88796.h
ax88796: Fix some typo in a comment
2022-08-09 22:14:02 -07:00
bareudp.h
…
bond_3ad.h
bonding: 3ad: Remove unused declaration bond_3ad_update_lacp_active()
2023-07-28 18:06:30 -07:00
bond_alb.h
bonding (gcc13): synchronize bond_{a,t}lb_xmit() types
2022-11-02 20:38:13 -07:00
bond_options.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
bonding.h
bonding: fix macvlan over alb bond support
2023-08-24 10:07:13 +02:00
bpf_sk_storage.h
…
busy_poll.h
net: invert the netdevice.h vs xdp.h dependency
2023-08-03 08:38:07 -07:00
calipso.h
…
cfg80211-wext.h
wifi: cfg80211: Avoid clashing function prototypes
2022-11-16 11:31:47 +02:00
cfg80211.h
wifi: cfg80211: fix kernel-doc for wiphy_delayed_work_flush()
2023-11-20 11:58:55 +01:00
cfg802154.h
net: cfg802154: fix kernel-doc notation warnings
2023-07-14 20:39:29 -07:00
checksum.h
net: checksum: drop the linux/uaccess.h include
2023-01-27 11:19:46 +00:00
cipso_ipv4.h
…
cls_cgroup.h
…
codel_impl.h
…
codel_qdisc.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
codel.h
codel: fix kernel-doc notation warnings
2023-07-14 20:39:29 -07:00
compat.h
net: copy from user before calling __get_compat_msghdr
2022-07-24 18:39:17 -06:00
datalink.h
net: datalink: Remove unused declarations
2023-07-27 17:17:32 -07:00
dcbevent.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
dcbnl.h
net: dcb: add helper functions to retrieve PCP and DSCP rewrite maps
2023-01-20 09:33:22 +00:00
devlink.h
devlink: Expose port function commands to control IPsec packet offloads
2023-08-27 17:08:45 -07:00
dropreason-core.h
net: add skb_queue_purge_reason and __skb_queue_purge_reason
2023-08-19 15:30:15 +01:00
dropreason.h
net: openvswitch: add last-action drop reason
2023-08-14 08:01:06 +01:00
dsa_stubs.h
net: dsa: replace NETDEV_PRE_CHANGE_HWTSTAMP notifier with a stub
2023-04-09 15:35:49 +01:00
dsa.h
net: dsa: remove legacy_pre_march2020 detection
2023-07-18 09:47:08 +02:00
dsfield.h
…
dst_cache.h
…
dst_metadata.h
xfrm: interface: Add unstable helpers for setting/getting XFRM metadata from TC-BPF
2022-12-05 21:58:27 -08:00
dst_ops.h
net: remove unnecessary input parameter 'how' in ifdown function
2023-08-22 13:19:02 +02:00
dst.h
net: dst: Switch to rcuref_t reference counting
2023-03-28 18:52:28 -07:00
erspan.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
esp.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
espintcp.h
…
ethoc.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
failover.h
…
fib_notifier.h
…
fib_rules.h
…
firewire.h
firewire: net: Make use of get_unaligned_be48(), put_unaligned_be48()
2022-07-28 22:21:54 -07:00
flow_dissector.h
net: flow_dissector: Add IPSEC dissector
2023-08-02 10:09:31 +01:00
flow_offload.h
tc: flower: Enable offload support IPSEC SPI field.
2023-08-02 10:09:32 +01:00
flow.h
inet: shrink struct flowi_common
2023-11-20 11:59:34 +01:00
fou.h
bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs
2023-04-12 16:40:39 -07:00
fq_impl.h
wifi: mac80211: add support for restricting netdev features per vif
2022-12-01 15:09:10 +01:00
fq.h
net: fq: Remove unused typedef fq_flow_get_default_t
2023-08-08 15:58:23 -07:00
garp.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
gen_stats.h
…
genetlink.h
drop_monitor: Require 'CAP_SYS_ADMIN' when joining "events" group
2023-12-13 18:45:10 +01:00
geneve.h
net: geneve: fix array of flexible structures warnings
2022-10-31 10:43:04 +00:00
gre.h
…
gro_cells.h
…
gro.h
net: gro: fix misuse of CB in udp socket lookup
2023-07-29 17:10:27 +01:00
gso.h
net: move gso declarations and functions to their own files
2023-06-10 00:11:41 -07:00
gtp.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
gue.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
handshake.h
net/handshake: Add helpers for parsing incoming TLS Alerts
2023-07-28 14:07:59 -07:00
hwbm.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
icmp.h
…
ieee80211_radiotap.h
wifi: radiotap: fix kernel-doc notation warnings
2023-08-22 21:40:40 +02:00
ieee802154_netdev.h
mac802154: Handle received BEACON_REQ
2023-03-23 21:51:30 +01:00
if_inet6.h
net: ipv6: support reporting otherwise unknown prefix flags in RTM_NEWPREFIX
2023-12-20 17:01:45 +01:00
ife.h
…
inet6_connection_sock.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
inet6_hashtables.h
net: Fix slab-out-of-bounds in inet[6]_steal_sock
2023-08-15 13:57:51 -07:00
inet_common.h
net: factor out __inet_listen_sk() helper
2023-08-14 07:06:13 +01:00
inet_connection_sock.h
inet: move inet->is_icsk to inet->inet_flags
2023-08-16 11:09:17 +01:00
inet_dscp.h
…
inet_ecn.h
…
inet_frag.h
inet: frags: eliminate kernel-doc warning
2023-07-14 20:39:29 -07:00
inet_hashtables.h
net: Fix slab-out-of-bounds in inet[6]_steal_sock
2023-08-15 13:57:51 -07:00
inet_sock.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2023-08-24 10:51:39 -07:00
inet_timewait_sock.h
tcp: Add TIME_WAIT sockets in bhash2.
2022-12-30 07:25:52 +00:00
inetpeer.h
…
ioam6.h
…
ip6_checksum.h
…
ip6_fib.h
net/ipv6: Revert remove expired routes with a separated list of routes
2024-01-01 12:42:33 +00:00
ip6_route.h
IPv6: add extack info for IPv6 address add/delete
2023-07-28 11:01:56 +01:00
ip6_tunnel.h
…
ip_fib.h
ipv4/fib: send notify when delete source address routes
2023-10-03 09:00:40 +02:00
ip_tunnels.h
ip_tunnels: use DEV_STATS_INC()
2023-09-06 06:05:59 +01:00
ip_vs.h
ipvs: Correct spelling in comments
2023-04-22 01:39:41 +02:00
ip.h
ipv4: ignore dst hint for multipath routes
2023-09-01 08:11:51 +01:00
ipcomp.h
xfrm: ipcomp: add extack to ipcomp{4,6}_init_state
2022-09-29 07:18:00 +02:00
ipconfig.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
ipv6_frag.h
net: dropreason: add SKB_DROP_REASON_FRAG_REASM_TIMEOUT
2022-10-31 20:14:27 -07:00
ipv6_stubs.h
bpf: Change bpf_getsockopt(SOL_IPV6) to reuse do_ipv6_getsockopt()
2022-09-02 20:34:32 -07:00
ipv6.h
tcp: Fix bind() regression for v4-mapped-v6 wildcard address.
2023-09-13 07:18:04 +01:00
iw_handler.h
wifi: wext: Remove unused declaration dev_get_wireless_info()
2023-08-22 21:40:40 +02:00
kcm.h
kcm: Send multiple frags in one sendmsg()
2023-06-12 21:13:23 -07:00
l3mdev.h
…
lag.h
…
lapb.h
…
lib80211.h
…
llc_c_ac.h
net: llc: Remove unused function declarations
2023-08-04 15:33:17 -07:00
llc_c_ev.h
net: llc: Remove unused function declarations
2023-08-04 15:33:17 -07:00
llc_c_st.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
llc_conn.h
llc: Check netns in llc_estab_match() and llc_listener_match().
2023-07-20 10:46:28 +02:00
llc_if.h
…
llc_pdu.h
net: llc: fix kernel-doc notation warnings
2023-07-14 20:39:29 -07:00
llc_s_ac.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
llc_s_ev.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
llc_s_st.h
add missing includes and forward declarations to networking includes under linux/
2022-07-28 11:29:36 +02:00
llc_sap.h
…
llc.h
…
lwtunnel.h
lwt: Check LWTUNNEL_XMIT_CONTINUE strictly
2023-08-18 16:05:26 +02:00
mac80211.h
Merge tag 'wireless-next-2023-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
2023-08-25 18:35:09 -07:00
mac802154.h
mac802154: Drop IEEE802154_HW_RX_DROP_BAD_CKSUM
2022-10-12 12:57:19 +02:00
macsec.h
net: macsec: indicate next pn update when offloading
2023-10-10 10:30:30 +02:00
mctp.h
mctp: Reorder fields in 'struct mctp_route'
2023-06-20 20:06:16 -07:00
mctpdevice.h
…
mip6.h
…
mld.h
…
mpls_iptunnel.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
mpls.h
…
mptcp.h
mptcp: add struct mptcp_sched_ops
2023-08-22 17:31:18 -07:00
mrp.h
mrp: introduce active flags to prevent UAF when applicant uninit
2022-11-18 12:14:55 +00:00
ncsi.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
ndisc.h
ndisc: Remove unused ndisc_ifinfo_sysctl_strategy() declaration
2023-08-07 08:53:55 +01:00
neighbour.h
neighbour: Fix __randomize_layout crash in struct neighbour
2023-12-08 08:52:23 +01:00
net_debug.h
…
net_failover.h
…
net_namespace.h
Merge tag 'sysctl-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
2023-08-29 17:39:15 -07:00
net_ratelimit.h
…
net_trackers.h
…
netdev_queues.h
net: add macro netif_subqueue_completed_wake
2023-04-18 12:59:01 +02:00
netdev_rx_queue.h
net: move struct netdev_rx_queue out of netdevice.h
2023-08-03 08:38:07 -07:00
netevent.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
netlabel.h
…
netlink.h
netlink: allow be16 and be32 types in all uint policy checks
2023-07-27 13:45:51 +02:00
netprio_cgroup.h
…
netrom.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
nexthop.h
ipv6: remove nexthop_fib6_nh_bh()
2023-05-11 18:07:05 -07:00
nl802154.h
ieee802154: Add support for user beaconing requests
2023-01-28 13:51:22 +01:00
nsh.h
net: NSH: fix kernel-doc notation warning
2023-07-14 20:39:29 -07:00
p8022.h
net: 802: Remove unused function declarations
2023-08-04 15:33:50 -07:00
pie.h
pie: fix kernel-doc notation warning
2023-07-14 20:39:30 -07:00
ping.h
net/ipv4: ping_group_range: allow GID from 2147483648 to 4294967294
2023-06-02 09:55:22 +01:00
pkt_cls.h
net: pkt_cls: Remove unused inline helpers
2023-08-07 08:53:54 +01:00
pkt_sched.h
net/sched: make psched_mtu() RTNL-less safe
2023-07-12 15:59:33 -07:00
pptp.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
protocol.h
tcp/udp: Make early_demux back namespacified.
2022-07-15 18:50:35 -07:00
psample.h
…
psnap.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
raw.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2023-04-06 12:01:20 -07:00
rawv6.h
ipv6: raw: constify raw_v6_match() socket argument
2023-03-17 08:56:37 +00:00
red.h
treewide: use get_random_u32() when possible
2022-10-11 17:42:58 -06:00
regulatory.h
wifi: cfg80211: fix regulatory disconnect with OCB/NAN
2023-06-19 12:05:29 +02:00
request_sock.h
…
rose.h
net: rose: add netdev ref tracker to 'struct rose_sock'
2022-08-01 11:59:23 -07:00
route.h
inet: move inet->transparent to inet->inet_flags
2023-08-16 11:09:17 +01:00
rpl.h
ipv6: rpl: Remove pskb(_may)?_pull() in ipv6_rpl_srh_rcv().
2023-06-19 11:32:58 -07:00
rsi_91x.h
rsi: remove kernel-doc comment marker
2023-07-14 20:39:30 -07:00
rtnetlink.h
net: validate veth and vxcan peer ifindexes
2023-08-20 11:40:03 +01:00
rtnh.h
…
sch_generic.h
net/sched: wrap open coded Qdics class filter counter
2023-08-01 10:47:24 +02:00
scm.h
af_unix: Fix msg_controllen test in scm_pidfd_recv() for MSG_CMSG_COMPAT.
2023-09-04 11:00:17 +01:00
secure_seq.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
seg6_hmac.h
…
seg6_local.h
…
seg6.h
…
selftests.h
…
slhc_vj.h
…
smc.h
net/smc: Introduce explicit check for v2 support
2023-03-15 08:18:35 +00:00
snmp.h
…
sock_reuseport.h
soreuseport: Fix socket selection for SO_INCOMING_CPU.
2022-10-25 11:35:16 +02:00
sock.h
bpf: syzkaller found null ptr deref in unix_bpf proto add
2024-01-01 12:42:28 +00:00
Space.h
net: Space.h: Remove unused function declarations
2023-08-03 18:10:10 -07:00
stp.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
strparser.h
tls: rx: remove the message decrypted tracking
2022-07-18 11:24:10 +01:00
switchdev.h
net: switchdev: Remove unused declaration switchdev_port_fwd_mark_set()
2023-08-09 13:12:15 -07:00
tc_wrapper.h
net/sched: Retire rsvp classifier
2023-02-16 09:27:07 +01:00
tcp_states.h
…
tcp.h
tcp: fix mid stream window clamp.
2023-12-13 18:45:07 +01:00
tcx.h
bpf: Add fd-based tcx multi-prog infra with link support
2023-07-19 10:07:27 -07:00
timewait_sock.h
…
tipc.h
…
tls_prot.h
net/tls: Add TLS Alert definitions
2023-07-28 14:07:59 -07:00
tls_toe.h
…
tls.h
tls: move tls_cipher_size_desc to net/tls/tls.h
2023-08-27 17:17:41 -07:00
transp_v6.h
inet6: Remove unused function declaration udpv6_connect()
2023-08-01 15:06:27 -07:00
tso.h
net: tso: inline tso_count_descs()
2022-12-12 15:04:39 -08:00
tun_proto.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
udp_tunnel.h
udp: lockless UDP_ENCAP_L2TPINUDP / UDP_GRO
2023-11-20 11:58:56 +01:00
udp.h
udp/udplite: Remove unused function declarations udp{,lite}_get_port()
2023-08-07 08:53:55 +01:00
udplite.h
udplite: fix various data-races
2023-11-20 11:58:56 +01:00
vsock_addr.h
…
vxlan.h
vxlan: Fix nexthop hash size
2023-08-02 10:58:26 +01:00
wext.h
…
x25.h
x25: preserve const qualifier in [a]x25_sk()
2023-03-18 12:23:34 +00:00
x25device.h
…
xdp_priv.h
net: add missing includes and forward declarations under net/
2022-07-22 12:53:22 +01:00
xdp_sock_drv.h
xsk: support mbuf on ZC RX
2023-07-19 09:56:49 -07:00
xdp_sock.h
xsk: introduce wrappers and helpers for supporting multi-buffer in Tx path
2023-07-19 09:56:49 -07:00
xdp.h
net: invert the netdevice.h vs xdp.h dependency
2023-08-03 08:38:07 -07:00
xfrm.h
xfrm: don't skip free of empty state in acquire policy
2023-08-01 12:04:43 +02:00
xsk_buff_pool.h
xsk: support mbuf on ZC RX
2023-07-19 09:56:49 -07:00