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linux/net/core
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Ido Schimmel ad499e4c09 genetlink: Use internal flags for multicast groups 
[ Upstream commit cd4d7263d5 ]

As explained in commit e03781879a ("drop_monitor: Require
'CAP_SYS_ADMIN' when joining "events" group"), the "flags" field in the
multicast group structure reuses uAPI flags despite the field not being
exposed to user space. This makes it impossible to extend its use
without adding new uAPI flags, which is inappropriate for internal
kernel checks.

Solve this by adding internal flags (i.e., "GENL_MCAST_*") and convert
the existing users to use them instead of the uAPI flags.

Tested using the reproducers in commit 44ec98ea5e ("psample: Require
'CAP_NET_ADMIN' when joining "packets" group") and commit e03781879a
("drop_monitor: Require 'CAP_SYS_ADMIN' when joining "events" group").

No functional changes intended.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: d1ebfce2c1 ("smb: client: require net admin for CIFS SWN netlink")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-06-19 13:33:45 +02:00
..
bpf_sk_storage.c bpf: Add length check for SK_DIAG_BPF_STORAGE_REQ_MAP_FD parsing 2023-08-11 15:13:50 +02:00
datagram.c net: fix rc7's __skb_datagram_iter() 2024-07-18 13:07:37 +02:00
datagram.h net/core: Allow the compiler to verify declaration and definition consistency 2019-03-27 13:49:44 -07:00
dev.c net: Handle napi_schedule() calls from non-interrupt 2026-04-18 10:33:18 +02:00
dev_addr_lists.c net: dev_addr_list: handle first address in __hw_addr_add_ex 2021-09-30 13:29:09 +01:00
dev_ioctl.c net: Remove RTNL dance for SIOCBRADDIF and SIOCBRDELIF. 2026-01-19 13:10:11 +01:00
devlink.c devlink: report devlink_port_type_warn source device 2024-03-01 13:21:55 +01:00
drop_monitor.c genetlink: Use internal flags for multicast groups 2026-06-19 13:33:45 +02:00
dst.c net: do not delay dst_entries_add() in dst_release() 2024-11-14 13:13:40 +01:00
dst_cache.c wireguard: device: reset peer src endpoint when netns exits 2021-12-08 09:04:46 +01:00
failover.c failover: allow name change on IFF_UP slave interfaces 2019-04-10 22:12:26 -07:00
fib_notifier.c net: fib_notifier: propagate extack down to the notifier block callback 2019-10-04 11:10:56 -07:00
fib_rules.c ipv6: fix memory leak in fib6_rule_suppress 2021-12-08 09:04:43 +01:00
filter.c bpf: Free reuseport cBPF prog after RCU grace period. 2026-06-19 13:33:32 +02:00
flow_dissector.c flow_dissector: Do not count vlan tags inside tunnel payload 2026-06-01 17:35:44 +02:00
flow_offload.c net: extract port range fields from fl_flow_key 2025-03-13 12:50:52 +01:00
gen_estimator.c net_sched: gen_estimator: support large ewma log 2021-01-15 18:11:06 -08:00
gen_stats.c docs: networking: convert gen_stats.txt to ReST 2020-04-28 14:39:46 -07:00
gro_cells.c net: Fix data-races around netdev_max_backlog. 2022-08-31 17:16:42 +02:00
hwbm.c net: hwbm: Make the hwbm_pool lock a mutex 2019-06-09 19:40:10 -07:00
link_watch.c net: linkwatch: use system_unbound_wq 2024-08-19 05:45:35 +02:00
lwt_bpf.c lwt: Fix return values of BPF xmit ops 2023-09-19 12:22:33 +02:00
lwtunnel.c lwtunnel: Validate RTA_ENCAP_TYPE attribute length 2022-01-11 15:35:14 +01:00
Makefile of: net: move of_net under net/ 2022-03-08 19:12:41 +01:00
neighbour.c net/neighbor: add missing policy for NDTPA_QUEUE_LENBYTES 2025-04-10 14:31:54 +02:00
net-procfs.c net-procfs: show net devices bound packet types 2022-02-01 17:27:08 +01:00
net-sysfs.c ethtool: check device is present when getting link settings 2024-09-04 13:23:40 +02:00
net-sysfs.h net-sysfs: add netdev_change_owner() 2020-02-26 20:07:25 -08:00
net-traces.c tcp: add tracepoint for checksum errors 2021-05-14 15:26:03 -07:00
net_namespace.c net: defer final 'struct net' free in netns dismantle 2025-05-02 07:44:23 +02:00
netclassid_cgroup.c bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode 2021-09-13 16:35:58 -07:00
netevent.c net: core: Correct function name netevent_unregister_notifier() in the kerneldoc 2021-03-28 17:56:56 -07:00
netpoll.c net: netpoll: fix incorrect refcount handling causing incorrect cleanup 2025-12-07 06:09:32 +09:00
netprio_cgroup.c bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode 2021-09-13 16:35:58 -07:00
of_net.c of: net: add a helper for loading netdev->dev_addr 2023-07-27 08:46:59 +02:00
page_pool.c page_pool: Fix use-after-free in page_pool_recycle_in_ring 2026-01-19 13:10:11 +01:00
pktgen.c net: pktgen: fix access outside of user given buffer in pktgen_thread_write() 2025-06-04 14:38:01 +02:00
ptp_classifier.c ptp: Add generic PTP is_sync() function 2025-09-09 18:50:20 +02:00
request_sock.c tcp: make sure init the accept_queue's spinlocks once 2024-02-23 08:54:27 +01:00
rtnetlink.c net: rtnetlink: zero ifla_vf_broadcast to avoid stack infoleak in rtnl_fill_vfinfo 2026-06-01 17:35:21 +02:00
scm.c io_uring/unix: drop usage of io_uring socket 2024-03-26 18:21:11 -04:00
secure_seq.c tcp: Fix data-races around sysctl knobs related to SYN option. 2022-07-29 17:25:22 +02:00
selftests.c net: selftests: fix TCP packet checksum 2025-07-10 15:57:39 +02:00
skbuff.c net: guard timestamp cmsgs to real error queue skbs 2026-06-19 13:33:35 +02:00
skmsg.c bpf, sockmap: Fix psock incorrectly pointing to sk 2025-08-28 16:24:07 +02:00
sock.c net: sock: fix hardened usercopy panic in sock_recv_errqueue 2026-01-19 13:10:16 +01:00
sock_destructor.h skb_expand_head() adjust skb->truesize incorrectly 2021-10-22 12:35:51 -07:00
sock_diag.c sock_diag: annotate data-races around sock_diag_handlers[family] 2024-03-26 18:21:17 -04:00
sock_map.c bpf, sockmap: Fix race between element replace and close() 2025-04-10 14:31:55 +02:00
sock_reuseport.c soreuseport: Fix socket selection for SO_INCOMING_CPU. 2022-12-31 13:14:07 +01:00
stream.c net: deal with most data-races in sk_wait_event() 2023-05-24 17:36:42 +01:00
sysctl_net_core.c net: let net.core.dev_weight always be non-zero 2025-03-13 12:49:59 +01:00
timestamping.c net: Introduce a new MII time stamping interface. 2019-12-25 19:51:33 -08:00
tso.c net: tso: add UDP segmentation support 2020-06-18 20:46:23 -07:00
utils.c net: Fix checksum update for ILA adj-transport 2025-06-27 11:05:38 +01:00
xdp.c xdp: fix invalid wait context of page_pool_destroy() 2024-08-19 05:44:59 +02:00