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linux/net/ipv4
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Paolo Abeni ca4ef4574f ip: fix IP_CHECKSUM handling 
The skbs processed by ip_cmsg_recv() are not guaranteed to
be linear e.g. when sending UDP packets over loopback with
MSGMORE.
Using csum_partial() on [potentially] the whole skb len
is dangerous; instead be on the safe side and use skb_checksum().

Thanks to syzkaller team to detect the issue and provide the
reproducer.

v1 -> v2:
 - move the variable declaration in a tighter scope

Fixes: ad6f939ab193 ("ip: Add offset parameter to ip_cmsg_recv")
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-21 12:23:53 -05:00
..
netfilter
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
2017-02-03 16:58:20 -05:00
af_inet.c
net: Add a skb_gro_flush_final helper.
2017-02-15 09:39:39 +01:00
ah4.c
IPsec: do not ignore crypto err in ah4 input
2017-01-16 12:57:48 +01:00
arp.c
NET: Fix /proc/net/arp for AX.25
2017-02-13 22:15:03 -05:00
cipso_ipv4.c
netlabel: out of bound access in cipso_v4_validate()
2017-02-04 19:44:22 -05:00
datagram.c
net: Set sk_txhash from a random number
2015-07-29 22:44:04 -07:00
devinet.c
net: ipv4: remove fib_lookup.h from devinet.c include list
2017-02-02 23:09:08 -05:00
esp4_offload.c
esp: Add a software GRO codepath
2017-02-15 11:04:11 +01:00
esp4.c
esp: Introduce a helper to setup the trailer
2017-01-17 10:23:08 +01:00
fib_frontend.c
lwtunnel: fix autoload of lwt modules
2017-01-18 17:07:14 -05:00
fib_lookup.h
ipv4: consider TOS in fib_select_default
2015-07-24 22:46:11 -07:00
fib_rules.c
switchdev: remove FIB offload infrastructure
2016-09-28 04:48:00 -04:00
fib_semantics.c
ipv4: fib: Notify about nexthop status changes
2017-02-08 15:25:18 -05:00
fib_trie.c
ipv4: fib: Add events for FIB replace and append
2017-02-10 11:32:13 -05:00
fou.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-10-30 12:42:58 -04:00
gre_demux.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-06-30 05:03:36 -04:00
gre_offload.c
net: add recursion limit to GRO
2016-10-20 14:32:22 -04:00
icmp.c
net: for rate-limited ICMP replies save one atomic operation
2017-01-09 15:49:12 -05:00
igmp.c
igmp, mld: Fix memory leak in igmpv3/mld_del_delrec()
2017-02-09 16:43:45 -05:00
inet_connection_sock.c
inet: don't use sk_v6_rcv_saddr directly
2017-01-20 14:35:51 -05:00
inet_diag.c
tcp: remove early retransmit
2017-01-13 22:37:16 -05:00
inet_fragment.c
net: disable fragment reassembly if high_thresh is zero
2016-06-05 22:56:42 -04:00
inet_hashtables.c
inet: kill smallest_size and smallest_port
2017-01-18 13:04:29 -05:00
inet_timewait_sock.c
ipv4: Namespaceify tcp_tw_recycle and tcp_max_tw_buckets knob
2016-12-29 11:38:31 -05:00
inetpeer.c
net: Add helper function to compare inetpeer addresses
2015-08-28 13:32:36 -07:00
ip_forward.c
ipv4: allow local fragmentation in ip_finish_output_gso()
2016-11-03 16:10:26 -04:00
ip_fragment.c
net: rename IP_INC_STATS_BH()
2016-04-27 22:48:23 -04:00
ip_gre.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
ip_input.c
net: VRF: Pass original iif to ip_route_input()
2016-09-16 04:24:07 -04:00
ip_options.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
ip_output.c
net: rename dst_neigh_output back to neigh_output
2017-02-11 21:25:18 -05:00
ip_sockglue.c
ip: fix IP_CHECKSUM handling
2017-02-21 12:23:53 -05:00
ip_tunnel_core.c
lwtunnel: remove device arg to lwtunnel_build_state
2017-01-30 15:14:22 -05:00
ip_tunnel.c
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
ip_vti.c
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
ipcomp.c
…
ipconfig.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
ipip.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
ipmr.c
ipmr: improve hash scalability
2017-01-12 16:48:26 -05:00
Kconfig
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
2017-02-16 21:25:49 -05:00
Makefile
esp: Add a software GRO codepath
2017-02-15 11:04:11 +01:00
netfilter.c
netfilter: Update ip_route_me_harder to consider L3 domain
2016-11-24 12:44:36 +01:00
ping.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-02-11 02:31:11 -05:00
proc.c
net: add LINUX_MIB_PFMEMALLOCDROP counter
2017-02-02 23:34:19 -05:00
protocol.c
…
raw_diag.c
net: ip, raw_diag -- Use jump for exiting from nested loop
2016-11-03 15:25:26 -04:00
raw.c
net: use dst_confirm_neigh for UDP, RAW, ICMP, L2TP
2017-02-07 13:07:47 -05:00
route.c
net: add confirm_neigh method to dst_ops
2017-02-07 13:07:46 -05:00
syncookies.c
syncookies: use SipHash in place of SHA1
2017-01-09 13:58:57 -05:00
sysctl_net_ipv4.c
net: Avoid receiving packets with an l3mdev on unbound UDP sockets
2017-01-30 15:00:58 -05:00
tcp_bbr.c
tcp_bbr: add a state transition diagram and accompanying comment
2016-10-29 17:12:43 -04:00
tcp_bic.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_cdg.c
tcp: cdg: rename struct minmax in tcp_cdg.c to avoid a naming conflict
2016-09-21 00:22:59 -04:00
tcp_cong.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-22 13:27:16 -05:00
tcp_cubic.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_dctcp.c
Revert "dctcp: update cwnd on congestion event"
2016-12-06 11:34:24 -05:00
tcp_diag.c
net: diag: Fix refcnt leak in error path destroying socket
2016-08-23 23:11:36 -07:00
tcp_fastopen.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-01-28 10:33:06 -05:00
tcp_highspeed.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp_htcp.c
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_hybla.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_illinois.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp_input.c
tcp: replace dst_confirm with sk_dst_confirm
2017-02-07 13:07:46 -05:00
tcp_ipv4.c
tcp: add tcp_mss_clamp() helper
2017-02-03 11:19:34 -05:00
tcp_lp.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_metrics.c
tcp: replace dst_confirm with sk_dst_confirm
2017-02-07 13:07:46 -05:00
tcp_minisocks.c
tcp: add tcp_mss_clamp() helper
2017-02-03 11:19:34 -05:00
tcp_nv.c
tcp: add NV congestion control
2016-06-10 23:07:49 -07:00
tcp_offload.c
gso: Support partial splitting at the frag_list pointer
2016-09-19 20:59:34 -04:00
tcp_output.c
tcp: accommodate sequence number to a peer's shrunk receive window caused by precision loss in window scaling
2017-02-17 15:30:33 -05:00
tcp_probe.c
tcp: tcp_probe: use spin_lock_bh()
2017-02-14 22:19:39 -05:00
tcp_rate.c
tcp: export data delivery rate
2016-09-21 00:23:00 -04:00
tcp_recovery.c
tcp: enable RACK loss detection to trigger recovery
2017-01-13 22:37:16 -05:00
tcp_scalable.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp_timer.c
tcp: remove early retransmit
2017-01-13 22:37:16 -05:00
tcp_vegas.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_vegas.h
tcp: replace cnt & rtt with struct in pkts_acked()
2016-05-11 14:43:19 -04:00
tcp_veno.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp_westwood.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_yeah.c
tcp: add cwnd_undo functions to various tcp cc algorithms
2016-11-21 13:20:17 -05:00
tcp.c
tcp: use page_ref_inc() in tcp_sendmsg()
2017-02-17 15:31:06 -05:00
tunnel4.c
tunnels: correct conditional build of MPLS and IPv6
2016-07-11 13:27:06 -07:00
udp_diag.c
net: inet: diag: expose the socket mark to privileged processes.
2016-09-08 16:13:09 -07:00
udp_impl.h
udplite: call proper backlog handlers
2016-11-24 15:32:14 -05:00
udp_offload.c
net: add recursion limit to GRO
2016-10-20 14:32:22 -04:00
udp_tunnel.c
net: Remove deprecated tunnel specific UDP offload functions
2016-06-17 20:23:32 -07:00
udp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-02-07 16:29:30 -05:00
udplite.c
udplite: call proper backlog handlers
2016-11-24 15:32:14 -05:00
xfrm4_input.c
esp: Add a software GRO codepath
2017-02-15 11:04:11 +01:00
xfrm4_mode_beet.c
…
xfrm4_mode_transport.c
esp: Add a software GRO codepath
2017-02-15 11:04:11 +01:00
xfrm4_mode_tunnel.c
…
xfrm4_output.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-10-24 06:54:12 -07:00
xfrm4_policy.c
xfrm: policy: make policy backend const
2017-02-09 10:22:19 +01:00
xfrm4_protocol.c
xfrm: input: constify xfrm_input_afinfo
2017-02-09 10:22:17 +01:00
xfrm4_state.c
xfrm: remove unused function
2017-01-10 10:57:12 +01:00
xfrm4_tunnel.c
…