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linux/net/ipv6
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Kuniyuki Iwashima ecddc523cf tcp: Fix dst leak in tcp_v6_connect(). 
If a socket is bound to a wildcard address, tcp_v[46]_connect()
updates it with a non-wildcard address based on the route lookup.

After bhash2 was introduced in the cited commit, we must call
inet_bhash2_update_saddr() to update the bhash2 entry as well.

If inet_bhash2_update_saddr() fails, we must release the refcount
for dst by ip_route_connect() or ip6_dst_lookup_flow().

While tcp_v4_connect() calls ip_rt_put() in the error path,
tcp_v6_connect() does not call dst_release().

Let's call dst_release() when inet_bhash2_update_saddr() fails
in tcp_v6_connect().

Fixes: 28044fc1d4 ("net: Add a bhash2 table hashed by port and address")
Reported-by: Damiano Melotti <melotti@google.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260506070443.1699879-1-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-07 08:39:15 -07:00
..
ila net: Add SPDX ids to some source files 2026-03-09 18:32:45 -07:00
netfilter netfilter: nf_socket: skip socket lookup for non-first fragments 2026-04-30 17:59:01 +02:00
addrconf_core.c ipv6: remove ipv6_stub infrastructure completely 2026-03-29 11:21:24 -07:00
addrconf.c Networking changes for 7.1. 2026-04-14 18:36:10 -07:00
addrlabel.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
af_inet6.c tcp: update window_clamp when SO_RCVBUF is set 2026-04-13 15:32:35 +02:00
ah6.c xfrm: ah: account for ESN high bits in async callbacks 2026-04-20 09:28:34 +02:00
anycast.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
calipso.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
datagram.c Networking changes for 7.1. 2026-04-14 18:36:10 -07:00
esp6_offload.c xfrm: Fix inner mode lookup in tunnel mode GSO segmentation 2025-12-04 09:54:53 +01:00
esp6.c xfrm: esp: avoid in-place decrypt on shared skb frags 2026-05-05 06:38:30 +02:00
exthdrs_core.c ipv6: Implement limits on extension header parsing 2026-04-30 17:21:45 -07:00
exthdrs_offload.c
exthdrs.c ipv6: rpl: reserve mac_len headroom when recompressed SRH grows 2026-04-27 17:47:26 -07:00
fib6_notifier.c net: Add SPDX ids to some source files 2026-03-09 18:32:45 -07:00
fib6_rules.c ipv6: export fib6_lookup for nft_fib_ipv6 2026-03-04 11:45:44 +01:00
fou6.c fou: Remove IPPROTO_UDPLITE check in gue_err() and gue6_err(). 2026-03-17 16:10:59 -07:00
icmp.c ipv6: fix possible UAF in icmpv6_rcv() 2026-04-18 12:09:52 -07:00
inet6_connection_sock.c tcp: move inet6_csk_update_pmtu() to tcp_ipv6.c 2026-02-24 17:47:27 -08:00
inet6_hashtables.c tcp: use __jhash_final() in inet6_ehashfn() 2026-03-29 11:45:48 -07:00
ioam6_iptunnel.c ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data() 2026-02-13 12:24:05 -08:00
ioam6.c net: ioam6: fix OOB and missing lock 2026-04-08 19:08:56 -07:00
ip6_checksum.c udp: Remove UDPLITE_SEND_CSCOV and UDPLITE_RECV_CSCOV. 2026-03-13 18:57:45 -07:00
ip6_fib.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-04-02 11:03:13 -07:00
ip6_flowlabel.c net: ipv6: flowlabel: defer exclusive option free until RCU teardown 2026-03-31 15:44:29 -07:00
ip6_gre.c ip6_gre: Use cached t->net in ip6erspan_changelink(). 2026-05-02 10:36:21 -07:00
ip6_icmp.c ipv6: remove dynamic ICMPv6 sender registration infrastructure 2026-03-29 11:21:23 -07:00
ip6_input.c ipv6: Implement limits on extension header parsing 2026-04-30 17:21:45 -07:00
ip6_offload.c ipv6: replace IS_BUILTIN(CONFIG_IPV6) with IS_ENABLED(CONFIG_IPV6) 2026-03-29 11:21:23 -07:00
ip6_offload.h
ip6_output.c ipv6: fix potential UAF caused by ip6_forward_proxy_check() 2026-05-06 17:29:23 -07:00
ip6_tunnel.c ipv6: Implement limits on extension header parsing 2026-04-30 17:21:45 -07:00
ip6_udp_tunnel.c ipv6: remove ipv6_stub infrastructure completely 2026-03-29 11:21:24 -07:00
ip6_vti.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
ip6mr.c ipmr/ip6mr: Convert net->ipv[46].ipmr_seq to atomic_t. 2026-03-02 18:49:41 -08:00
ipcomp6.c xfrm: delete x->tunnel as we delete x 2025-07-08 13:28:27 +02:00
ipv6_sockglue.c ipv6: Remove UDP-Lite support for IPV6_ADDRFORM. 2026-03-13 18:57:44 -07:00
Kconfig ipv6: default IPV6_SIT to m 2026-05-05 17:31:51 -07:00
Makefile ipv6: Retire UDP-Lite. 2026-03-13 18:57:44 -07:00
mcast_snoop.c
mcast.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
mip6.c
ndisc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-04-02 11:03:13 -07:00
netfilter.c netfilter: remove nf_ipv6_ops and use direct function calls 2026-03-29 11:21:24 -07:00
output_core.c ipv6: move ip6_dst_hoplimit() to net/ipv6/ip6_output.c 2026-04-01 18:50:35 -07:00
ping.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
proc.c udp: Remove UDP-Lite SNMP stats. 2026-03-13 18:57:44 -07:00
protocol.c
raw.c net: change sock_queue_rcv_skb_reason() to return a drop_reason 2026-04-12 14:30:25 -07:00
reassembly.c ipv6: discard fragment queue earlier if there is malformed datagram 2026-02-27 19:08:54 -08:00
route.c ipv6: Fix null-ptr-deref in fib6_mtu(). 2026-05-05 17:32:57 -07:00
rpl_iptunnel.c net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels 2026-04-28 11:16:14 +02:00
rpl.c
seg6_hmac.c ipv6: add NULL checks for idev in SRv6 paths 2026-03-18 17:23:43 -07:00
seg6_iptunnel.c net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels 2026-04-28 11:16:14 +02:00
seg6_local.c ipv6: adopt dst_dev() helper 2025-07-02 14:32:30 -07:00
seg6.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
sit.c ipv6: sit: remove redundant ret = 0 assignment 2026-04-09 20:37:40 -07:00
syncookies.c tcp: secure_seq: add back ports to TS offset 2026-03-04 17:44:35 -08:00
sysctl_net_ipv6.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
tcp_ao.c
tcp_ipv6.c tcp: Fix dst leak in tcp_v6_connect(). 2026-05-07 08:39:15 -07:00
tcpv6_offload.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-01-29 17:28:54 -08:00
tunnel6.c
udp_offload.c udp: Don't pass udptable to IPv6 socket lookup functions. 2026-03-13 18:57:46 -07:00
udp.c udp: Force compute_score to always inline 2026-04-13 15:44:42 -07:00
xfrm6_input.c xfrm: hold dev ref until after transport_finish NF_HOOK 2026-04-07 10:12:40 +02:00
xfrm6_output.c ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers 2025-07-02 14:32:30 -07:00
xfrm6_policy.c xfrm6: fix uninitialized saddr in xfrm6_get_saddr() 2026-02-02 08:03:47 +01:00
xfrm6_protocol.c ipv6: xfrm6: release dst on error in xfrm6_rcv_encap() 2026-04-17 10:40:29 +02:00
xfrm6_state.c
xfrm6_tunnel.c xfrm: flush all states in xfrm_state_fini 2025-08-06 09:23:38 +02:00