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Aaron Conole 4bf2b74239 net: openvswitch: limit the number of recursions from action sets 
[ Upstream commit 6e2f90d31fe09f2b852de25125ca875aabd81367 ]

The ovs module allows for some actions to recursively contain an action
list for complex scenarios, such as sampling, checking lengths, etc.
When these actions are copied into the internal flow table, they are
evaluated to validate that such actions make sense, and these calls
happen recursively.

The ovs-vswitchd userspace won't emit more than 16 recursion levels
deep.  However, the module has no such limit and will happily accept
limits larger than 16 levels nested.  Prevent this by tracking the
number of recursions happening and manually limiting it to 16 levels
nested.

The initial implementation of the sample action would track this depth
and prevent more than 3 levels of recursion, but this was removed to
support the clone use case, rather than limited at the current userspace
limit.

Fixes: 798c166173ff ("openvswitch: Optimize sample action for the clone use cases")
Signed-off-by: Aaron Conole <aconole@redhat.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240207132416.1488485-2-aconole@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-18 12:13:28 +01:00
..
6lowpan Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
9p 9p/net: fix possible memory leak in p9_check_errors() 2024-11-18 12:12:01 +01:00
802 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
8021q vlan: skip nested type that is not IFLA_VLAN_QOS_MAPPING 2024-11-18 12:13:00 +01:00
appletalk appletalk: Fix Use-After-Free in atalk_ioctl 2024-11-18 12:11:49 +01:00
atm atm: Fix Use-After-Free in do_vcc_ioctl 2024-11-18 12:11:49 +01:00
ax25 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
batman-adv net: vlan: introduce skb_vlan_eth_hdr() 2024-11-18 12:11:48 +01:00
bluetooth Bluetooth: L2CAP: Fix possible multiple reject send 2024-11-18 12:13:17 +01:00
bpf Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bpfilter Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bridge netfilter: nf_conntrack_bridge: initialize err to 0 2024-11-18 11:43:20 +01:00
caif Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
can can: isotp: isotp_sendmsg(): fix TX state detection and wait behavior 2024-11-18 10:58:47 +01:00
ceph libceph: use kernel_connect() 2024-11-08 11:25:50 +01:00
core tcp: make sure init the accept_queue's spinlocks once 2024-11-18 12:12:59 +01:00
dcb Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dccp dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses. 2024-11-18 11:43:07 +01:00
decnet Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dns_resolver keys, dns: Fix size check of V1 server-list header 2024-11-18 12:12:43 +01:00
dsa Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
ethernet Backport mac80211 patches from linux-6.1.y 2024-06-15 16:29:20 -03:00
ethtool ethtool: netlink: Add missing ethnl_ops_begin/complete 2024-11-18 12:12:51 +01:00
hsr hsr: Prevent use after free in prp_create_tagged_frame() 2024-11-18 11:43:07 +01:00
ieee802154 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ife net: sched: ife: fix potential use-after-free 2024-11-18 12:11:59 +01:00
ipv4 inet: read sk->sk_family once in inet_recv_error() 2024-11-18 12:13:25 +01:00
ipv6 ipv6: Ensure natural alignment of const ipv6 loopback and router addresses 2024-11-18 12:13:22 +01:00
iucv net/af_iucv: clean up a try_then_request_module() 2024-11-18 12:13:26 +01:00
kcm Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
key Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
l2tp Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
l3mdev Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
lapb Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
llc llc: call sock_orphan() at release time 2024-11-18 12:13:22 +01:00
mac80211 wifi: mac80211: mesh_plink: fix matches_local logic 2024-11-18 12:11:58 +01:00
mac802154 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mpls Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mptcp mptcp: fix uninit-value in mptcp_incoming_options 2024-11-18 12:12:12 +01:00
ncm Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ncsi net/ncsi: Fix netlink major/minor version numbers 2024-11-18 12:12:28 +01:00
netfilter netfilter: nft_set_rbtree: skip end interval element from gc 2024-11-18 12:13:27 +01:00
netlabel calipso: fix memory leak in netlbl_calipso_add_pass() 2024-11-18 12:12:25 +01:00
netlink netlink: fix potential sleeping issue in mqueue_flush_file 2024-11-18 12:13:00 +01:00
netrom Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfc nfc: llcp_core: Hold a ref to llcp_local->dev when holding a ref to llcp_local 2024-11-18 12:12:06 +01:00
nsh Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
openvswitch net: openvswitch: limit the number of recursions from action sets 2024-11-18 12:13:28 +01:00
packet packet: Move reference count in packet_sock to atomic_long_t 2024-11-18 12:11:42 +01:00
phonet Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
psample psample: Require 'CAP_NET_ADMIN' when joining "packets" group 2024-11-18 12:11:46 +01:00
qrtr Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
rds net/rds: Fix UBSAN: array-index-out-of-bounds in rds_cmsg_recv 2024-11-18 12:13:00 +01:00
rfkill net: rfkill: gpio: set GPIO direction 2024-11-18 12:12:01 +01:00
rose net/rose: fix races in rose_kill_by_device() 2024-11-18 12:11:59 +01:00
rxrpc rxrpc: Fix response to PING RESPONSE ACKs to a dead call 2024-11-18 12:13:25 +01:00
sched net: sched: em_text: fix possible memory leak in em_text_destroy() 2024-11-18 12:12:06 +01:00
sctp Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
skb_tracer Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
smc net/smc: fix illegal rmb_desc access in SMC-D connection dump 2024-11-18 12:12:59 +01:00
strparser Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sunrpc SUNRPC: Fix a suspicious RCU usage warning 2024-11-18 12:13:10 +01:00
switchdev Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tipc tipc: Check the bearer type before calling tipc_udp_nl_bearer_add() 2024-11-18 12:13:25 +01:00
tls net: tls, update curr on splice as well 2024-11-18 12:12:08 +01:00
unix af_unix: fix lockdep positive in sk_diag_dump_icons() 2024-11-18 12:13:23 +01:00
vmw_vsock virtio/vsock: fix logic which reduces credit update messages 2024-11-18 12:12:37 +01:00
wimax Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
wireless wifi: cfg80211: fix RCU dereference in __cfg80211_bss_update 2024-11-18 12:13:21 +01:00
x25 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xdp Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xfrm Revert "xfrm: fix a data-race in xfrm_gen_index()" 2024-11-17 19:38:56 +01:00
compat.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
devres.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
socket.c net: Save and restore msg_namelen in sock_sendmsg 2024-11-18 12:12:07 +01:00
sysctl_net.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
TEST_MAPPING Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00