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6.6.121-147
linux/net/ipv4
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Eric Dumazet 029935507d arp: do not assume dev_hard_header() does not change skb->head 
[ Upstream commit c92510f5e3f82ba11c95991824a41e59a9c5ed81 ]

arp_create() is the only dev_hard_header() caller
making assumption about skb->head being unchanged.

A recent commit broke this assumption.

Initialize @arp pointer after dev_hard_header() call.

Fixes: db5b4e39c4e6 ("ip6_gre: make ip6gre_header() robust")
Reported-by: syzbot+58b44a770a1585795351@syzkaller.appspotmail.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260107212250.384552-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-01-17 16:29:59 +01:00
..
bpfilter
net: Use umd_cleanup_helper()
2023-05-31 13:06:57 +02:00
netfilter
netfilter: nf_tables: pass context structure to nft_parse_register_load
2026-01-11 15:21:46 +01:00
af_inet.c
net: inet: do not leave a dangling sk pointer in inet_create()
2024-12-14 20:00:04 +01:00
ah4.c
net: ipv4: Remove completion function scaffolding
2023-02-13 18:35:15 +08:00
arp.c
arp: do not assume dev_hard_header() does not change skb->head
2026-01-17 16:29:59 +01:00
bpf_tcp_ca.c
bpf: Drop useless btf_vmlinux in bpf_tcp_ca
2023-07-18 17:31:10 -07:00
cipso_ipv4.c
net: use unrcu_pointer() helper
2024-12-09 10:32:10 +01:00
datagram.c
ipv4: fix data-races around inet->inet_id
2023-08-20 11:40:49 +01:00
devinet.c
ipv4: Fix NULL vs error pointer check in inet_blackhole_dev_init()
2025-09-09 18:56:24 +02:00
esp4_offload.c
xfrm: Determine inner GSO type from packet inner protocol
2025-12-01 11:41:45 +01:00
esp4.c
espintcp: fix skb leaks
2025-11-24 10:30:05 +01:00
fib_frontend.c
ipv4: fib: Move fib_valid_key_len() to rtm_to_fib_config().
2025-06-04 14:42:03 +02:00
fib_lookup.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-02-17 11:44:20 -08:00
fib_notifier.c
…
fib_rules.c
ip: fib_rules: Fetch net from fib_rule in fib[46]_rule_configure().
2025-06-04 14:42:11 +02:00
fib_semantics.c
net: remove NULL-pointer net parameter in ip_metrics_convert
2024-09-08 07:54:45 +02:00
fib_trie.c
ipv4: Fix reference count leak when using error routes with nexthop objects
2026-01-11 15:22:08 +01:00
fou_bpf.c
bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs
2023-04-12 16:40:39 -07:00
fou_core.c
fou: fix initialization of grc
2024-09-18 19:24:09 +02:00
fou_nl.c
net: ynl: prefix uAPI header include with uapi/
2023-05-26 10:30:14 +01:00
fou_nl.h
net: ynl: prefix uAPI header include with uapi/
2023-05-26 10:30:14 +01:00
gre_demux.c
…
gre_offload.c
net: move gso declarations and functions to their own files
2023-06-10 00:11:41 -07:00
icmp.c
icmp: fix icmp_ndo_send address translation for reply direction
2025-09-09 18:56:22 +02:00
igmp.c
ipv4: igmp: fix refcnt uaf issue when receiving igmp query packet
2023-12-08 08:52:21 +01:00
inet_connection_sock.c
tcp: Fix use-after-free of nreq in reqsk_timer_handler().
2024-12-09 10:32:35 +01:00
inet_diag.c
sock_diag: allow concurrent operation in sock_diag_rcv_msg()
2024-12-09 10:32:10 +01:00
inet_fragment.c
net: Rename mono_delivery_time to tstamp_type for scalabilty
2025-05-09 09:43:57 +02:00
inet_hashtables.c
inet: Avoid ehash lookup race in inet_ehash_insert()
2026-01-11 15:21:14 +01:00
inet_timewait_sock.c
tcp/dccp: do not care about families in inet_twsk_purge()
2024-08-29 17:33:46 +02:00
inetpeer.c
inetpeer: do not get a refcount in inet_getpeer()
2025-02-08 09:51:53 +01:00
ip_forward.c
net: ipv4, ipv6: fix IPSTATS_MIB_OUTOCTETS increment duplicated
2023-08-30 09:44:09 +01:00
ip_fragment.c
net: Rename mono_delivery_time to tstamp_type for scalabilty
2025-05-09 09:43:57 +02:00
ip_gre.c
ipv4: ip_gre: Fix set but not used warning in ipgre_err() if IPv4-only
2025-06-04 14:42:12 +02:00
ip_input.c
ipv4: ignore dst hint for multipath routes
2023-09-01 08:11:51 +01:00
ip_options.c
ipv4: Convert ip_route_input() to dscp_t.
2025-03-07 16:45:39 +01:00
ip_output.c
net: Add locking to protect skb->dev access in ip_output
2026-01-17 16:29:54 +01:00
ip_sockglue.c
ipmr: fix kernel panic when forwarding mcast packets
2024-02-05 20:14:35 +00:00
ip_tunnel_core.c
tunnels: reset the GSO metadata before reusing the skb
2025-09-19 16:32:06 +02:00
ip_tunnel.c
net/ip6_tunnel: Prevent perpetual tunnel growth
2025-10-23 16:16:31 +02:00
ip_vti.c
ip_vti: fix potential slab-use-after-free in decode_session6
2023-07-11 11:06:08 +02:00
ipcomp.c
xfrm: delete x->tunnel as we delete x
2026-01-11 15:21:06 +01:00
ipconfig.c
net: ipconfig: move ic_nameservers_fallback into #ifdef block
2023-05-22 11:17:55 +01:00
ipip.c
ipip,ip_tunnel,sit: Add FOU support for externally controlled ipip devices
2023-04-12 16:40:39 -07:00
ipmr_base.c
ipmr: do not call mr_mfc_uses_dev() for unres entries
2025-02-08 09:52:29 +01:00
ipmr.c
inet: ipmr: fix data-races
2025-02-08 09:52:02 +01:00
Kconfig
tcp: configurable source port perturb table size
2022-11-16 13:02:04 +00:00
Makefile
bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs
2023-04-12 16:40:39 -07:00
metrics.c
net: remove NULL-pointer net parameter in ip_metrics_convert
2024-09-08 07:54:45 +02:00
netfilter.c
netfilter: Use l3mdev flow key when re-routing mangled packets
2022-05-16 13:03:29 +02:00
netlink.c
…
nexthop.c
net: When removing nexthops, don't call synchronize_net if it is not necessary
2025-11-24 10:29:29 +01:00
ping.c
inet: ping: Fix icmp out counting
2026-01-17 16:29:58 +01:00
proc.c
minmax: add a few more MIN_T/MAX_T users
2025-09-25 11:00:10 +02:00
protocol.c
…
raw_diag.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2023-04-06 12:01:20 -07:00
raw.c
ipv4: Fix uninit-value access in __ip_make_skb()
2024-05-17 12:02:07 +02:00
route.c
ipv4: route: Prevent rt_bind_exception() from rebinding stale fnhe
2025-11-24 10:30:07 +01:00
syncookies.c
tcp: annotate data-races around tp->window_clamp
2024-08-11 12:47:19 +02:00
sysctl_net_ipv4.c
networking: Update to register_net_sysctl_sz
2023-08-15 15:26:18 -07:00
tcp_bbr.c
bpf: Add __bpf_kfunc tag to all kfuncs
2023-02-02 00:25:14 +01:00
tcp_bic.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_bpf.c
tcp_bpf: Call sk_msg_free() when tcp_bpf_send_verdict() fails to allocate psock->cork.
2025-09-19 16:32:02 +02:00
tcp_cdg.c
Merge tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
2022-10-16 15:27:07 -07:00
tcp_cong.c
net: remove NULL-pointer net parameter in ip_metrics_convert
2024-09-08 07:54:45 +02:00
tcp_cubic.c
tcp_cubic: fix incorrect HyStart round start detection
2025-02-08 09:52:04 +01:00
tcp_dctcp.c
tcp: Fix shift-out-of-bounds in dctcp_update_alpha().
2024-06-12 11:12:48 +02:00
tcp_dctcp.h
…
tcp_diag.c
tcp: Access &tcp_hashinfo via net.
2022-09-20 10:21:49 -07:00
tcp_fastopen.c
tcp: fix passive TFO socket having invalid NAPI ID
2025-06-27 11:09:02 +01:00
tcp_highspeed.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_htcp.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_hybla.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_illinois.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_input.c
tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().
2025-10-19 16:30:43 +02:00
tcp_ipv4.c
tcp: drop secpath at the same time as we currently drop dst
2025-02-27 04:10:49 -08:00
tcp_lp.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_metrics.c
tcp_metrics: optimize tcp_metrics_flush_all()
2024-08-19 06:04:25 +02:00
tcp_minisocks.c
tcp: Defer ts_recent changes until req is owned
2025-03-07 16:45:41 +01:00
tcp_nv.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_offload.c
net-timestamp: support TCP GSO case for a few missing flags
2025-03-13 12:58:32 +01:00
tcp_output.c
tcp: fix tcp_tso_should_defer() vs large RTT
2025-10-23 16:16:31 +02:00
tcp_plb.c
prandom: remove prandom_u32_max()
2022-12-20 03:13:45 +01:00
tcp_rate.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-04-28 13:02:01 -07:00
tcp_recovery.c
tcp: fix excessive TLP and RACK timeouts from HZ rounding
2023-10-17 17:25:42 -07:00
tcp_scalable.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_timer.c
tcp: new TCP_INFO stats for RTO events
2024-10-17 15:24:23 +02:00
tcp_ulp.c
net/ulp: use consistent error code when blocking ULP
2023-01-19 09:26:16 -08:00
tcp_vegas.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_vegas.h
…
tcp_veno.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_westwood.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_yeah.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp.c
tcp: take care of zero tp->window_clamp in tcp_set_rcvlowat()
2025-10-19 16:30:43 +02:00
tunnel4.c
…
udp_bpf.c
bpf, sockmap: Fix an infinite loop error when len is 0 in tcp_bpf_recvmsg_parser()
2023-03-03 17:25:15 +01:00
udp_diag.c
udp: Access &udp_table via net.
2022-11-16 09:43:35 +00:00
udp_impl.h
sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)
2023-06-24 15:50:13 -07:00
udp_offload.c
udp: also consider secpath when evaluating ipsec use for checksumming
2025-08-28 16:28:13 +02:00
udp_tunnel_core.c
udp: lockless UDP_ENCAP_L2TPINUDP / UDP_GRO
2023-11-20 11:58:56 +01:00
udp_tunnel_nic.c
udp_tunnel: use netdev_warn() instead of netdev_WARN()
2025-11-24 10:29:37 +01:00
udp_tunnel_stub.c
…
udp.c
udp: Fix memory accounting leak.
2025-04-10 14:37:40 +02:00
udplite.c
udplite: remove UDPLITE_BIT
2023-11-20 11:58:56 +01:00
xfrm4_input.c
xfrm: Preserve vlan tags for transport mode software GRO
2024-05-17 12:02:20 +02:00
xfrm4_output.c
…
xfrm4_policy.c
xfrm: respect ip protocols rules criteria when performing dst lookups
2024-11-01 01:58:28 +01:00
xfrm4_protocol.c
net: xfrm: unexport __init-annotated xfrm4_protocol_init()
2022-06-08 10:10:13 -07:00
xfrm4_state.c
…
xfrm4_tunnel.c
xfrm: tunnel: add extack to ipip_init_state, xfrm6_tunnel_init_state
2022-09-29 07:18:00 +02:00