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linux/net/ipv4
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Kyle Zeng 0113d9c9d1 ipv4: fix null-deref in ipv4_link_failure 
Currently, we assume the skb is associated with a device before calling
__ip_options_compile, which is not always the case if it is re-routed by
ipvs.
When skb->dev is NULL, dev_net(skb->dev) will become null-dereference.
This patch adds a check for the edge case and switch to use the net_device
from the rtable when skb->dev is NULL.

Fixes: ed0de45a1008 ("ipv4: recompile ip options in ipv4_link_failure")
Suggested-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Kyle Zeng <zengyhkyle@gmail.com>
Cc: Stephen Suryaputra <ssuryaextr@gmail.com>
Cc: Vadim Fedorenko <vfedorenko@novek.ru>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-17 15:14:58 +01:00
..
bpfilter
net: Use umd_cleanup_helper()
2023-05-31 13:06:57 +02:00
netfilter
inet: move inet->nodefrag to inet->inet_flags
2023-08-16 11:09:17 +01:00
af_inet.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2023-08-24 10:51:39 -07:00
ah4.c
net: ipv4: Remove completion function scaffolding
2023-02-13 18:35:15 +08:00
arp.c
neighbour: annotate lockless accesses to n->nud_state
2023-03-15 00:37:32 -07:00
bpf_tcp_ca.c
bpf: Drop useless btf_vmlinux in bpf_tcp_ca
2023-07-18 17:31:10 -07:00
cipso_ipv4.c
inet: move inet->is_icsk to inet->inet_flags
2023-08-16 11:09:17 +01:00
datagram.c
ipv4: fix data-races around inet->inet_id
2023-08-20 11:40:49 +01:00
devinet.c
net: ipv4: fix one memleak in __inet_del_ifa()
2023-09-08 08:02:17 +01:00
esp4_offload.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2023-06-22 18:40:38 -07:00
esp4.c
net: ipv4: Use kfree_sensitive instead of kfree
2023-07-19 11:03:03 +01:00
fib_frontend.c
ipv4: Fix incorrect table ID in IOCTL path
2023-03-16 17:26:31 -07:00
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
net: ipv4: remove superfluous header files from fib_notifier.c
2021-09-28 17:32:56 -07:00
fib_rules.c
ipv4: remove unnecessary type castings
2022-04-30 15:12:58 +01:00
fib_semantics.c
ipv4: annotate data-races around fi->fib_dead
2023-08-31 11:58:18 +02:00
fib_trie.c
ipv4: annotate data-races around fi->fib_dead
2023-08-31 11:58:18 +02:00
fou_bpf.c
bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs
2023-04-12 16:40:39 -07:00
fou_core.c
bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs
2023-04-12 16:40:39 -07:00
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
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
gre_offload.c
net: move gso declarations and functions to their own files
2023-06-10 00:11:41 -07:00
icmp.c
icmp: guard against too small mtu
2023-03-31 21:37:06 -07:00
igmp.c
igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU
2023-09-05 17:49:40 +01:00
inet_connection_sock.c
tcp: annotate data-races around icsk->icsk_syn_retries
2023-07-20 12:34:18 -07:00
inet_diag.c
inet: move inet->defer_connect to inet->inet_flags
2023-08-16 11:09:18 +01:00
inet_fragment.c
net: dropreason: add SKB_DROP_REASON_FRAG_REASM_TIMEOUT
2022-10-31 20:14:27 -07:00
inet_hashtables.c
tcp: Fix bind() regression for v4-mapped-v6 non-wildcard address.
2023-09-13 07:18:04 +01:00
inet_timewait_sock.c
inet: move inet->transparent to inet->inet_flags
2023-08-16 11:09:17 +01:00
inetpeer.c
inetpeer: Fix data-races around sysctl.
2022-07-08 12:10:33 +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
networking: Update to register_net_sysctl_sz
2023-08-15 15:26:18 -07:00
ip_gre.c
ipv4: ip_gre: fix return value check in erspan_xmit()
2023-07-19 12:27:09 +01:00
ip_input.c
ipv4: ignore dst hint for multipath routes
2023-09-01 08:11:51 +01:00
ip_options.c
ipv4: drop fragmentation code from ip_options_build()
2022-01-29 17:53:07 +00:00
ip_output.c
net: annotate data-races around sk->sk_tsflags
2023-09-01 07:27:33 +01:00
ip_sockglue.c
net: annotate data-races around sk->sk_tsflags
2023-09-01 07:27:33 +01:00
ip_tunnel_core.c
tunnels: fix kasan splat when generating ipv4 pmtu error
2023-08-04 18:24:52 -07:00
ip_tunnel.c
bpf-next-for-netdev
2023-04-13 16:43:38 -07:00
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: ipcomp: add extack to ipcomp{4,6}_init_state
2022-09-29 07:18:00 +02:00
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: adopt rcu_read_lock() in mr_dump()
2022-06-24 11:34:38 +01:00
ipmr.c
net: ipv4, ipv6: fix IPSTATS_MIB_OUTOCTETS increment duplicated
2023-08-30 09:44:09 +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
ipv4: prevent potential spectre v1 gadget in ip_metrics_convert()
2023-01-23 21:37:25 -08:00
netfilter.c
netfilter: Use l3mdev flow key when re-routing mangled packets
2022-05-16 13:03:29 +02:00
netlink.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
nexthop.c
nexthop: Do not increment dump sentinel at the end of the dump
2023-08-15 18:54:53 -07:00
ping.c
inet: move inet->recverr to inet->inet_flags
2023-08-16 11:09:17 +01:00
proc.c
icmp: Add counters for rate limits
2023-01-26 10:52:18 +01:00
protocol.c
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
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
inet: move inet->hdrincl to inet->inet_flags
2023-08-16 11:09:17 +01:00
route.c
ipv4: fix null-deref in ipv4_link_failure
2023-09-17 15:14:58 +01:00
syncookies.c
tcp: Set route scope properly in cookie_v4_check().
2023-06-06 21:13:03 -07:00
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
sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)
2023-06-24 15:50:13 -07:00
tcp_cdg.c
Random number generator fixes for Linux 6.1-rc1.
2022-10-16 15:27:07 -07:00
tcp_cong.c
net: Update an existing TCP congestion control algorithm.
2023-03-22 22:53:00 -07:00
tcp_cubic.c
bpf: Add __bpf_kfunc tag to all kfuncs
2023-02-02 00:25:14 +01:00
tcp_dctcp.c
bpf: Add __bpf_kfunc tag to all kfuncs
2023-02-02 00:25:14 +01:00
tcp_dctcp.h
…
tcp_diag.c
tcp: Access &tcp_hashinfo via net.
2022-09-20 10:21:49 -07:00
tcp_fastopen.c
inet: move inet->defer_connect to inet->inet_flags
2023-08-16 11:09:18 +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
inet: move inet->transparent to inet->inet_flags
2023-08-16 11:09:17 +01:00
tcp_ipv4.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2023-08-24 10:51:39 -07:00
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: hash table allocation cleanup
2023-08-04 15:33:39 -07:00
tcp_minisocks.c
inet: move inet->transparent to inet->inet_flags
2023-08-16 11:09:17 +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: move gso declarations and functions to their own files
2023-06-10 00:11:41 -07:00
tcp_output.c
net: annotate data-races around sk->sk_forward_alloc
2023-09-01 07:27:33 +01:00
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: preserve const qualifier in tcp_sk()
2023-03-18 12:23:34 +00:00
tcp_scalable.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_timer.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2023-08-18 12:44:56 -07:00
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
Including fixes from netfilter and bpf.
2023-09-07 18:33:07 -07:00
tunnel4.c
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
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
net: gro: fix misuse of CB in udp socket lookup
2023-07-29 17:10:27 +01:00
udp_tunnel_core.c
inet: move inet->mc_loop to inet->inet_frags
2023-08-16 11:09:17 +01:00
udp_tunnel_nic.c
udp_tunnel: Add checks for nla_nest_start() in __udp_tunnel_nic_dump_write()
2022-11-29 08:44:24 -08:00
udp_tunnel_stub.c
udp_tunnel: add central NIC RX port offload infrastructure
2020-07-10 13:54:00 -07:00
udp.c
net: annotate data-races around sk->sk_forward_alloc
2023-09-01 07:27:33 +01:00
udplite.c
sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)
2023-06-24 15:50:13 -07:00
xfrm4_input.c
xfrm: fix inbound ipv4/udp/esp packets to UDPv6 dualstack sockets
2023-06-09 08:16:34 +02:00
xfrm4_output.c
xfrm: fix unused variable warning if CONFIG_NETFILTER=n
2020-05-11 15:12:27 +02:00
xfrm4_policy.c
sysctl-6.6-rc1
2023-08-29 17:39:15 -07:00
xfrm4_protocol.c
net: xfrm: unexport __init-annotated xfrm4_protocol_init()
2022-06-08 10:10:13 -07:00
xfrm4_state.c
xfrm: remove output_finish indirection from xfrm_state_afinfo
2020-05-06 09:40:08 +02:00
xfrm4_tunnel.c
xfrm: tunnel: add extack to ipip_init_state, xfrm6_tunnel_init_state
2022-09-29 07:18:00 +02:00