linux/net/ipv6
Paolo Abeni 9c48060141 udp: fix jump label misuse
The commit 60fb9567bf ("udp: implement complete book-keeping for
encap_needed") introduced a severe misuse of jump label APIs, which
syzbot, as reported by Eric, was able to exploit.

When multiple sockets/process can concurrently request (and than
disable) the udp encap, we need to track the activation counter with
*_inc()/*_dec() jump label variants, or we can experience bad things
at disable time.

Fixes: 60fb9567bf ("udp: implement complete book-keeping for encap_needed")
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-16 23:01:56 -08:00
..
ila ila: remove blank lines at EOF 2018-07-24 14:10:42 -07:00
netfilter netfilter: ipv6: fix oops when defragmenting locally generated fragments 2018-10-25 10:18:26 +02:00
addrconf_core.c net/ipv6: Add helper to return path MTU based on fib result 2018-05-22 10:51:09 +02:00
addrconf.c net/{ipv4,ipv6}: Do not put target net if input nsid is invalid 2018-10-25 16:21:31 -07:00
addrlabel.c net/ipv6: Update ip6addrlbl_dump for strict data checking 2018-10-08 10:39:05 -07:00
af_inet6.c net/ipv6: Add anycast addresses to a global hashtable 2018-11-02 23:54:56 -07:00
ah6.c
anycast.c net/ipv6: compute anycast address hash only if dev is null 2018-11-08 17:04:43 -08:00
calipso.c ipv6: make ipv6_renew_options() interrupt/kernel safe 2018-07-05 20:15:26 +09:00
datagram.c net: ensure unbound datagram socket to be chosen when not in a VRF 2018-11-07 16:12:38 -08:00
esp6_offload.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2018-07-27 09:33:37 -07:00
esp6.c esp: remove redundant define esph 2018-08-29 08:02:43 +02:00
exthdrs_core.c net: ipv6: Fix typo in ipv6_find_hdr() documentation 2018-05-07 23:50:27 -04:00
exthdrs_offload.c
exthdrs.c ipv6: make ipv6_renew_options() interrupt/kernel safe 2018-07-05 20:15:26 +09:00
fib6_notifier.c
fib6_rules.c net/ipv6: Add fib6_lookup 2018-05-11 00:10:56 +02:00
fou6.c fou, fou6: ICMP error handlers for FoU and GUE 2018-11-08 17:13:08 -08:00
icmp.c net: Convert protocol error handlers from void to int 2018-11-08 17:13:08 -08:00
inet6_connection_sock.c
inet6_hashtables.c net: ensure unbound stream socket to be chosen when not in a VRF 2018-11-07 16:12:38 -08:00
ip6_checksum.c net: udp: fix handling of CHECKSUM_COMPLETE packets 2018-10-24 14:18:16 -07:00
ip6_fib.c ipv6: properly check return value in inet6_dump_all() 2018-11-05 17:04:54 -08:00
ip6_flowlabel.c ipv6: fold sockcm_cookie into ipcm6_cookie 2018-07-07 10:58:49 +09:00
ip6_gre.c net: Convert protocol error handlers from void to int 2018-11-08 17:13:08 -08:00
ip6_icmp.c
ip6_input.c ipv6: factor out protocol delivery helper 2018-11-07 16:23:05 -08:00
ip6_offload.c ipv6: gro: do not use slow memcmp() in ipv6_gro_receive() 2018-11-06 14:59:27 -08:00
ip6_offload.h
ip6_output.c Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-09-18 09:33:27 -07:00
ip6_tunnel.c ip6_tunnel: Fix encapsulation layout 2018-10-18 16:54:40 -07:00
ip6_udp_tunnel.c
ip6_vti.c vti6: remove !skb->ignore_df check from vti6_xmit() 2018-08-29 17:51:44 -07:00
ip6mr.c net: Don't return invalid table id error when dumping all families 2018-10-24 14:06:25 -07:00
ipcomp6.c
ipv6_sockglue.c ipv6: allow ping to link-local address in VRF 2018-11-07 16:12:39 -08:00
Kconfig net: remove blank lines at end of file 2018-07-24 14:10:43 -07:00
Makefile
mcast_snoop.c
mcast.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-19 11:03:06 -07:00
mip6.c
ndisc.c ipv6/ndisc: Preserve IPv6 control buffer if protocol error handlers are called 2018-10-26 15:58:06 -07:00
netfilter.c netfilter: utils: move nf_ip6_checksum* from ipv6 to utils 2018-07-16 17:51:48 +02:00
output_core.c
ping.c ipv6: fold sockcm_cookie into ipcm6_cookie 2018-07-07 10:58:49 +09:00
proc.c proc: introduce proc_create_net_single 2018-05-16 07:24:30 +02:00
protocol.c
raw.c net: fix raw socket lookup device bind matching with VRFs 2018-11-07 16:12:39 -08:00
reassembly.c net/ipfrag: let ip[6]frag_high_thresh in ns be higher than in init_net 2018-09-21 19:45:52 -07:00
route.c net: Add extack argument to ip_fib_metrics_init 2018-11-06 15:00:45 -08:00
seg6_hmac.c Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-07-03 10:29:26 +09:00
seg6_iptunnel.c ipv6: sr: fix useless rol32 call on hash 2018-07-18 15:10:47 -07:00
seg6_local.c bpf: add End.DT6 action to bpf_lwt_seg6_action helper 2018-07-31 09:22:48 +02:00
seg6.c rhashtable: split rhashtable.h 2018-06-22 13:43:27 +09:00
sit.c net-ipv4: remove 2 always zero parameters from ipv4_redirect() 2018-09-26 20:30:55 -07:00
syncookies.c
sysctl_net_ipv6.c ipv6: sr: Compute flowlabel for outer IPv6 header of seg6 encap mode 2018-04-25 13:02:15 -04:00
tcp_ipv6.c net: Convert protocol error handlers from void to int 2018-11-08 17:13:08 -08:00
tcpv6_offload.c net: Convert GRO SKB handling to list_head. 2018-06-26 11:33:04 +09:00
tunnel6.c net: Convert protocol error handlers from void to int 2018-11-08 17:13:08 -08:00
udp_impl.h net: Convert protocol error handlers from void to int 2018-11-08 17:13:08 -08:00
udp_offload.c udp: implement GRO for plain UDP sockets. 2018-11-07 16:23:04 -08:00
udp.c udp: fix jump label misuse 2018-11-16 23:01:56 -08:00
udplite.c net: Convert protocol error handlers from void to int 2018-11-08 17:13:08 -08:00
xfrm6_input.c xfrm: reset transport header back to network header after all input transforms ahave been applied 2018-09-04 10:26:30 +02:00
xfrm6_mode_beet.c
xfrm6_mode_ro.c ipv6: xfrm: use 64-bit timestamps 2018-07-11 15:26:35 +02:00
xfrm6_mode_transport.c xfrm: reset transport header back to network header after all input transforms ahave been applied 2018-09-04 10:26:30 +02:00
xfrm6_mode_tunnel.c
xfrm6_output.c xfrm6: call kfree_skb when skb is toobig 2018-09-03 07:37:57 +02:00
xfrm6_policy.c net/xfrm: fix out-of-bounds packet access 2018-10-11 13:24:46 +02:00
xfrm6_protocol.c net: Convert protocol error handlers from void to int 2018-11-08 17:13:08 -08:00
xfrm6_state.c xfrm: remove VLA usage in __xfrm6_sort() 2018-04-26 07:51:48 +02:00
xfrm6_tunnel.c