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linux/net
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Ilya Maximets 6cc523eaee net: openvswitch: fix skb leak on flow key update failure during ct 
commit bc62e843bc upstream.

ovs_ct_execute() always steals or frees the skb on failure while
ovs_flow_key_update() does not.  So, if it fails and we return right
away, the skb ends up leaked.

Fix that by breaking instead and letting the common error handling
code at the bottom of the loop to free the skb properly.

This is a very unlikely scenario as it requires the packet to become
unparseable by applying a set of actions on a previously parseable skb,
but should be fixed nevertheless.

Reported by Sashiko.

Fixes: ec0d043d05 ("openvswitch: Ensure flow is valid before executing ct")
Cc: stable@vger.kernel.org
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20260727181851.306076-3-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-08-19 17:14:11 +02:00
..
6lowpan 6lowpan: fix NHC entry use-after-free on error path 2026-07-24 15:51:20 +02:00
9p net/9p: fix infinite loop in p9_client_rpc on fatal signal 2026-07-24 15:51:50 +02:00
802 net/802/mrp: fix vector attribute parsing in mrp_pdu_parse_vecattr 2026-06-19 13:33:34 +02:00
8021q net: vlan: sync VLAN features with lower device 2025-12-07 06:09:26 +09:00
appletalk net: appletalk: Fix use-after-free in AARP proxy probe 2025-08-28 16:24:04 +02:00
atm net: atm: reject out-of-range traffic classes in QoS validation 2026-07-24 15:51:46 +02:00
ax25 ax25: properly unshare skbs in ax25_kiss_rcv() 2025-09-09 18:50:20 +02:00
batman-adv batman-adv: clean untagged VLAN on netdev registration failure 2026-07-24 15:51:53 +02:00
bluetooth Bluetooth: HIDP: validate numbered report payloads 2026-08-19 17:14:09 +02:00
bpf bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb 2026-06-01 17:35:29 +02:00
bpfilter bpfilter: Specify the log level for the kmsg message 2021-06-25 13:13:50 +02:00
bridge net: bridge: stop fast-leave after deleting a port group 2026-08-19 17:14:10 +02:00
caif net: caif: clear client service pointer on teardown 2026-06-01 17:35:14 +02:00
can can: isotp: check register_netdevice_notifier() error in module init 2026-08-19 17:14:08 +02:00
ceph libceph: remove debugfs files before client teardown 2026-08-19 17:14:03 +02:00
core bpf: lwt: Fix dst reference leak on reroute failure 2026-08-19 17:14:09 +02:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-11 15:13:53 +02:00
dccp net: fix data-races around sk->sk_forward_alloc 2025-01-23 17:16:04 +01:00
dns_resolver keys, dns: Fix size check of V1 server-list header 2024-01-25 14:52:46 -08:00
dsa net: dsa: tag_ksz: do not rely on skb_mac_header() in TX paths 2026-07-24 15:51:27 +02:00
ethernet gro: remove rcu_read_lock/rcu_read_unlock from gro_complete handlers 2024-09-12 11:07:47 +02:00
ethtool ethtool: eeprom: add more safeties to EEPROM Netlink fallback 2026-06-19 13:33:24 +02:00
hsr net: hsr: fix memory leak on slave unregistration by removing synced VLANs 2026-08-19 17:13:58 +02:00
ieee802154 ieee802154: allow legacy LLSEC ADD/DEL ops to pass strict validation 2026-07-24 15:51:53 +02:00
ife net: ife: require ETH_HLEN to be pullable in ife_decode() 2026-07-24 15:51:46 +02:00
ipv4 raw: fix a typo in raw_icmp_error() 2026-08-19 17:14:05 +02:00
ipv6 net: ipv6: clear suppressed fib6 rule result 2026-08-19 17:14:10 +02:00
iucv net/iucv: fix use-after-free of a severed iucv_path 2026-08-19 17:14:04 +02:00
kcm kcm: use WRITE_ONCE() when changing lower socket callbacks 2026-07-24 15:51:36 +02:00
key net: af_key: initialize alg_key_len for IPComp states 2026-07-24 15:51:21 +02:00
l2tp l2tp: Drop large packets with UDP encap 2026-06-01 17:35:03 +02:00
l3mdev net: Add l3mdev index to flow struct and avoid oif reset for port devices 2024-10-17 15:11:57 +02:00
lapb net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c 2021-06-08 16:31:25 -07:00
llc llc: fix SAP refcount leak when creating incoming sockets 2026-07-24 15:51:55 +02:00
mac80211 wifi: mac80211: validate individual TWT params before driver setup 2026-08-19 17:14:07 +02:00
mac802154 mac802154: llsec: reject frames shorter than the authentication tag 2026-08-19 17:14:04 +02:00
mctp net: mctp: fix don't require received header reserved bits to be zero 2026-06-19 13:33:41 +02:00
mpls net: mpls: initialize rtm_tos in mpls_getroute() 2026-08-19 17:14:05 +02:00
mptcp mptcp: only set DATA_FIN when a mapping is present 2026-08-19 17:14:03 +02:00
ncsi net: ncsi: fix skb leak in error paths 2026-04-18 10:33:15 +02:00
netfilter netfilter: ipset: do not update comments from kernel-side hash adds 2026-08-19 17:14:09 +02:00
netlabel netlabel: validate unlabeled address and mask attribute lengths 2026-06-19 13:33:35 +02:00
netlink rtnetlink: add RTNL_FLAG_DUMP_UNLOCKED flag 2026-07-24 15:51:42 +02:00
netrom netrom: fix double-free in nr_route_frame() 2026-02-06 16:41:58 +01:00
nfc nfc: llcp: protect nfc_llcp_sock_unlink() calls 2026-07-24 15:51:15 +02:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-05-17 11:50:48 +02:00
openvswitch net: openvswitch: fix skb leak on flow key update failure during ct 2026-08-19 17:14:11 +02:00
packet net/packet: avoid fanout hook re-registration after unregister 2026-08-19 17:13:57 +02:00
phonet phonet: pep: fix use-after-free in pep_get_sb() 2026-08-19 17:14:03 +02:00
psample net: psample: fix info leak in PSAMPLE_ATTR_DATA 2026-07-24 15:51:39 +02:00
qrtr net: qrtr: ns: Raise node count limit to 512 2026-08-19 17:14:05 +02:00
rds rds: tcp: hold the RCU lock across ipv6_chk_addr() in rds_tcp_laddr_check() 2026-08-19 17:14:06 +02:00
rfkill net: rfkill: prevent unlimited numbers of rfkill events from being created 2026-04-18 10:33:38 +02:00
rose net/rose: fix NULL pointer dereference in rose_transmit_link on reconnect 2026-04-18 10:33:20 +02:00
rxrpc rxrpc: Fix missing validation of ticket length in non-XDR key preparsing 2026-06-01 17:35:12 +02:00
sched net/sched: act_tunnel_key: Defer dst_release to RCU callback 2026-08-19 17:13:54 +02:00
sctp sctp: prevent peer transport count overflow 2026-08-19 17:14:10 +02:00
smc net/smc: fix socket use-after-free during link group termination 2026-08-19 17:14:09 +02:00
strparser net: strparser: fix skb_head leak in strp_abort_strp() 2026-06-01 17:35:14 +02:00
sunrpc xprtrdma: Fix bcall rep leak and unbounded peek 2026-07-24 15:51:38 +02:00
switchdev net: make switchdev_bridge_port_{,unoffload} loosely coupled with the bridge 2021-08-04 12:35:07 +01:00
tipc tipc: avoid use-after-free in poll trace queue dumps 2026-08-19 17:14:10 +02:00
tls tls: separate no-async decryption request handling from async 2026-08-19 17:14:05 +02:00
unix af_unix: Reject SIOCATMARK on non-stream sockets 2026-07-04 13:39:37 +02:00
vmw_vsock vsock/vmci: fix sk_ack_backlog leak on failed handshake 2026-06-19 13:33:37 +02:00
wireless wifi: cfg80211: bound element ID read when checking non-inheritance 2026-08-19 17:13:53 +02:00
x25 net/x25: fix use-after-free in x25_kill_by_neigh() 2026-08-19 17:14:04 +02:00
xdp xsk: tighten UMEM headroom validation to account for tailroom and min frame 2026-06-01 17:35:02 +02:00
xfrm xfrm: policy: preallocate inexact bins before xfrm_hash_rebuild reinsert 2026-08-19 17:13:52 +02:00
compat.c use less confusing names for iov_iter direction initializers 2026-06-19 13:33:46 +02:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
Kconfig Remove DECnet support from kernel 2023-06-21 15:59:15 +02:00
Makefile Remove DECnet support from kernel 2023-06-21 15:59:15 +02:00
socket.c net: Drop the lock in skb_may_tx_timestamp() 2026-07-24 15:51:21 +02:00
sysctl_net.c net: Ensure net namespace isolation of sysctls 2021-04-12 13:27:11 -07:00