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f4a87e7bd2
linux/net/ipv4
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Patrick McHardy f4a87e7bd2 netfilter: synproxy: fix BUG_ON triggered by corrupt TCP packets 
TCP packets hitting the SYN proxy through the SYNPROXY target are not
validated by TCP conntrack. When th->doff is below 5, an underflow happens
when calculating the options length, causing skb_header_pointer() to
return NULL and triggering the BUG_ON().

Handle this case gracefully by checking for NULL instead of using BUG_ON().

Reported-by: Martin Topholm <mph@one.com>
Tested-by: Martin Topholm <mph@one.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-09-30 12:44:38 +02:00
..
netfilter netfilter: synproxy: fix BUG_ON triggered by corrupt TCP packets 2013-09-30 12:44:38 +02:00
af_inet.c net: make snmp_mib_free static inline 2013-09-02 21:00:50 -07:00
ah4.c
arp.c net: neighbour: Remove CONFIG_ARPD 2013-09-03 21:41:43 -04:00
cipso_ipv4.c
datagram.c
devinet.c net: igmp: Allow user-space configuration of igmp unsolicited report interval 2013-08-09 11:27:46 -07:00
esp4.c net: esp{4,6}: fix potential MTU calculation overflows 2013-08-05 12:26:50 -07:00
fib_frontend.c netlink: fix splat in skb_clone with large messages 2013-06-27 22:44:16 -07:00
fib_lookup.h
fib_rules.c fib_rules: fix suppressor names and default values 2013-08-03 10:40:23 -07:00
fib_semantics.c ipv4: use next hop exceptions also for input routes 2013-06-28 21:27:47 -07:00
fib_trie.c fib_trie: remove potential out of bound access 2013-08-05 15:26:11 -07:00
gre_demux.c net: gre: move GSO functions to gre_offload 2013-07-03 14:37:39 -07:00
gre_offload.c gso: Update tunnel segmentation to support Tx checksum offload 2013-07-11 12:18:49 -07:00
icmp.c
igmp.c net: igmp: Allow user-space configuration of igmp unsolicited report interval 2013-08-09 11:27:46 -07:00
inet_connection_sock.c
inet_diag.c
inet_fragment.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-07-09 18:24:39 -07:00
inet_hashtables.c inet: fix spacing in assignment 2013-07-11 12:02:39 -07:00
inet_lro.c
inet_timewait_sock.c
inetpeer.c
ip_forward.c
ip_fragment.c
ip_gre.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-16 15:37:26 -07:00
ip_input.c net: add SNMP counters tracking incoming ECN bits 2013-08-08 22:24:59 -07:00
ip_options.c
ip_output.c xfrm: introduce helper for safe determination of mtu 2013-08-14 13:09:07 +02:00
ip_sockglue.c
ip_tunnel_core.c tunnels: harmonize cleanup done on skb on xmit path 2013-09-04 00:27:25 -04:00
ip_tunnel.c tunnels: harmonize cleanup done on skb on rx path 2013-09-04 00:27:26 -04:00
ip_vti.c ipip: add x-netns support 2013-08-15 01:00:20 -07:00
ipcomp.c
ipconfig.c
ipip.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-09-05 14:58:52 -04:00
ipmr.c tunnels: harmonize cleanup done on skb on rx path 2013-09-04 00:27:26 -04:00
Kconfig net: neighbour: Remove CONFIG_ARPD 2013-09-03 21:41:43 -04:00
Makefile net: gre: move GSO functions to gre_offload 2013-07-03 14:37:39 -07:00
netfilter.c
ping.c net: proc_fs: trivial: print UIDs as unsigned int 2013-08-15 14:37:46 -07:00
proc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-08-16 15:37:26 -07:00
protocol.c
raw.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-09-05 14:58:52 -04:00
route.c ipv4: raise IP_MAX_MTU to theoretical limit 2013-08-20 15:05:04 -07:00
syncookies.c net: syncookies: export cookie_v4_init_sequence/cookie_v4_check 2013-08-28 00:27:44 +02:00
sysctl_net_ipv4.c tcp: TSO packets automatic sizing 2013-08-29 15:50:06 -04:00
tcp_bic.c
tcp_cong.c
tcp_cubic.c tcp: cubic: fix bug in bictcp_acked() 2013-08-07 10:35:08 -07:00
tcp_diag.c
tcp_fastopen.c tcp: add server ip to encrypt cookie in fast open 2013-08-10 00:35:33 -07:00
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c
tcp_input.c tcp: properly increase rcv_ssthresh for ofo packets 2013-09-06 14:43:49 -04:00
tcp_ipv4.c tcp: Change return value of tcp_rcv_established() 2013-09-04 00:27:28 -04:00
tcp_lp.c
tcp_memcontrol.c cgroup: pass around cgroup_subsys_state instead of cgroup in file methods 2013-08-08 20:11:24 -04:00
tcp_metrics.c tcp: fix RTO calculated from cached RTT 2013-09-17 19:08:08 -04:00
tcp_minisocks.c tcp: consolidate SYNACK RTT sampling 2013-07-22 17:53:42 -07:00
tcp_offload.c net: tcp: move GRO/GSO functions to tcp_offload 2013-06-07 14:39:05 -07:00
tcp_output.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-09-05 14:58:52 -04:00
tcp_probe.c tcp: Change return value of tcp_rcv_established() 2013-09-04 00:27:28 -04:00
tcp_scalable.c
tcp_timer.c
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tcp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-09-05 14:58:52 -04:00
tunnel4.c
udp_diag.c
udp_impl.h
udp_offload.c net: udp4: move GSO functions to udp_offload 2013-06-12 00:47:25 -07:00
udp.c net: unify skb_udp_tunnel_segment() and skb_udp6_tunnel_segment() 2013-08-31 22:30:01 -04:00
udplite.c
xfrm4_input.c
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c xfrm: revert ipv4 mtu determination to dst_mtu 2013-08-26 12:40:53 +02:00
xfrm4_policy.c
xfrm4_state.c xfrm: make local error reporting more robust 2013-08-14 13:07:12 +02:00
xfrm4_tunnel.c