NL80211_CMD_GET_SCAN is implemented as a multi-call dumpit. The first
invocation of nl80211_prepare_wdev_dump() validates the requested wdev
against the caller's netns via __cfg80211_wdev_from_attrs(). Subsequent
invocations look up the same wiphy by its global index and do not check
that the wiphy is still in the caller's netns.

Add the same filter to the continuation path. If the wiphy's netns no
longer matches the caller's, return -ENODEV and the netlink dump
machinery terminates the walk cleanly.

Signed-off-by: Maoyi Xie <maoyi.xie@ntu.edu.sg>
Link: https://patch.msgid.link/20260506064854.2207105-3-maoyixie.tju@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

NL80211_CMD_SET_WIPHY_NETNS dispatches with GENL_UNS_ADMIN_PERM, which
verifies that the caller has CAP_NET_ADMIN for the source netns. It
doesn't verify that the caller has CAP_NET_ADMIN over the target netns
selected by NL80211_ATTR_NETNS_FD or NL80211_ATTR_PID.

This diverges from the convention enforced in
net/core/rtnetlink.c::rtnl_get_net_ns_capable():

    /* For now, the caller is required to have CAP_NET_ADMIN in
     * the user namespace owning the target net ns.
     */
    if (!sk_ns_capable(sk, net->user_ns, CAP_NET_ADMIN))
        return ERR_PTR(-EACCES);

A user with CAP_NET_ADMIN in their own user namespace can therefore
push a wiphy into an arbitrary netns (including init_net) over which
they have no privilege.

Mirror the rtnetlink convention by requiring CAP_NET_ADMIN in the
target netns before calling cfg80211_switch_netns().

Signed-off-by: Maoyi Xie <maoyi.xie@ntu.edu.sg>
Link: https://patch.msgid.link/20260506064854.2207105-2-maoyixie.tju@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

This is documented as a u8 and has a policy of NLA_U8, but uses
nla_get_u32() which means it's completely broken on big-endian.
Fix it to use nla_get_u8().

Fixes: 9bb7e0f24e7e ("cfg80211: add peer measurement with FTM initiator API")
Link: https://patch.msgid.link/20260505113837.260159-2-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

NL80211_CMD_SET_PMK and NL80211_CMD_DEL_PMK manage the offloaded
4-way-handshake PMK state used by drivers advertising
NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X.  The only in-tree
driver that wires up both ->set_pmk / ->del_pmk and advertises
the feature today is brcmfmac, so the practical reach of this
patch is narrow.

Both ops were introduced without a .flags gate, so the generic
netlink layer dispatches them to an unprivileged caller instead
of rejecting with -EPERM at the permission check.  Every other
connection-state op in the adjacent block (CONNECT, ASSOCIATE,
AUTHENTICATE, SET_KEY, ...) carries GENL_UNS_ADMIN_PERM; SET_PMK
/ DEL_PMK were introduced without the flag in 2017 and left
unchanged by later refactors.  Johannes checked the original
Intel submission history and confirmed there is no admin check
in any prior revision either, so this seems likely to be a
simple oversight rather than an intentional carve-out.

Require GENL_UNS_ADMIN_PERM so the genl layer performs the same
capable(CAP_NET_ADMIN) check as its siblings.  wpa_supplicant
already needs CAP_NET_ADMIN for every other nl80211 op it issues,
so supplicant operation is unaffected.  The worst case the missing
gate enables today is an unprivileged local process on a
multi-user system invalidating the offloaded PMK state of another
user's 4-way-handshake session, forcing a full EAP re-auth on the
next reconnect.

Verified in UML: an unprivileged probe (uid=1000) sees
SET_MULTICAST_TO_UNICAST (sibling op with GENL_UNS_ADMIN_PERM)
return -EPERM on both pre- and post-fix kernels, while SET_PMK /
DEL_PMK return -ENODEV from nl80211_pre_doit()'s wdev lookup pre-
fix (proving dispatch crossed the genl permission check) and
-EPERM post-fix (rejected at the genl layer as intended).

Suggested-by: Johannes Berg <johannes@sipsolutions.net>
Fixes: 3a00df5707b6 ("cfg80211: support 4-way handshake offloading for 802.1X")
Assisted-by: Claude:claude-opus-4-7
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom>
Link: https://patch.msgid.link/20260421224552.4044147-1-michael.bommarito@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Support HW queue leasing, allowing containers to be granted access
     to HW queues for zero-copy operations and AF_XDP

   - Number of code moves to help the compiler with inlining. Avoid
     output arguments for returning drop reason where possible

   - Rework drop handling within qdiscs to include more metadata about
     the reason and dropping qdisc in the tracepoints

   - Remove the rtnl_lock use from IP Multicast Routing

   - Pack size information into the Rx Flow Steering table pointer
     itself. This allows making the table itself a flat array of u32s,
     thus making the table allocation size a power of two

   - Report TCP delayed ack timer information via socket diag

   - Add ip_local_port_step_width sysctl to allow distributing the
     randomly selected ports more evenly throughout the allowed space

   - Add support for per-route tunsrc in IPv6 segment routing

   - Start work of switching sockopt handling to iov_iter

   - Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid
     buffer size drifting up

   - Support MSG_EOR in MPTCP

   - Add stp_mode attribute to the bridge driver for STP mode selection.
     This addresses concerns about call_usermodehelper() usage

   - Remove UDP-Lite support (as announced in 2023)

   - Remove support for building IPv6 as a module. Remove the now
     unnecessary function calling indirection

  Cross-tree stuff:

   - Move Michael MIC code from generic crypto into wireless, it's
     considered insecure but some WiFi networks still need it

  Netfilter:

   - Switch nft_fib_ipv6 module to no longer need temporary dst_entry
     object allocations by using fib6_lookup() + RCU.

     Florian W reports this gets us ~13% higher packet rate

   - Convert IPVS's global __ip_vs_mutex to per-net service_mutex and
     switch the service tables to be per-net. Convert some code that
     walks the service lists to use RCU instead of the service_mutex

   - Add more opinionated input validation to lower security exposure

   - Make IPVS hash tables to be per-netns and resizable

  Wireless:

   - Finished assoc frame encryption/EPPKE/802.1X-over-auth

   - Radar detection improvements

   - Add 6 GHz incumbent signal detection APIs

   - Multi-link support for FILS, probe response templates and client
     probing

   - New APIs and mac80211 support for NAN (Neighbor Aware Networking,
     aka Wi-Fi Aware) so less work must be in firmware

  Driver API:

   - Add numerical ID for devlink instances (to avoid having to create
     fake bus/device pairs just to have an ID). Support shared devlink
     instances which span multiple PFs

   - Add standard counters for reporting pause storm events (implement
     in mlx5 and fbnic)

   - Add configuration API for completion writeback buffering (implement
     in mana)

   - Support driver-initiated change of RSS context sizes

   - Support DPLL monitoring input frequency (implement in zl3073x)

   - Support per-port resources in devlink (implement in mlx5)

  Misc:

   - Expand the YAML spec for Netfilter

  Drivers

   - Software:
      - macvlan: support multicast rx for bridge ports with shared
        source MAC address
      - team: decouple receive and transmit enablement for IEEE 802.3ad
        LACP "independent control"

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - support high order pages in zero-copy mode (for payload
           coalescing)
         - support multiple packets in a page (for systems with 64kB
           pages)
      - Broadcom 25-400GE (bnxt):
         - implement XDP RSS hash metadata extraction
         - add software fallback for UDP GSO, lowering the IOMMU cost
      - Broadcom 800GE (bnge):
         - add link status and configuration handling
         - add various HW and SW statistics
      - Marvell/Cavium:
         - NPC HW block support for cn20k
      - Huawei (hinic3):
         - add mailbox / control queue
         - add rx VLAN offload
         - add driver info and link management

   - Ethernet NICs:
      - Marvell/Aquantia:
         - support reading SFP module info on some AQC100 cards
      - Realtek PCI (r8169):
         - add support for RTL8125cp
      - Realtek USB (r8152):
         - support for the RTL8157 5Gbit chip
         - add 2500baseT EEE status/configuration support

   - Ethernet NICs embedded and off-the-shelf IP:
      - Synopsys (stmmac):
         - cleanup and reorganize SerDes handling and PCS support
         - cleanup descriptor handling and per-platform data
         - cleanup and consolidate MDIO defines and handling
         - shrink driver memory use for internal structures
         - improve Tx IRQ coalescing
         - improve TCP segmentation handling
         - add support for Spacemit K3
      - Cadence (macb):
         - support PHYs that have inband autoneg disabled with GEM
         - support IEEE 802.3az EEE
         - rework usrio capabilities and handling
      - AMD (xgbe):
         - improve power management for S0i3
         - improve TX resilience for link-down handling

   - Virtual:
      - Google cloud vNIC:
         - support larger ring sizes in DQO-QPL mode
         - improve HW-GRO handling
         - support UDP GSO for DQO format
      - PCIe NTB:
         - support queue count configuration

   - Ethernet PHYs:
      - automatically disable PHY autonomous EEE if MAC is in charge
      - Broadcom:
         - add BCM84891/BCM84892 support
      - Micrel:
         - support for LAN9645X internal PHY
      - Realtek:
         - add RTL8224 pair order support
         - support PHY LEDs on RTL8211F-VD
         - support spread spectrum clocking (SSC)
      - Maxlinear:
         - add PHY-level statistics via ethtool

   - Ethernet switches:
      - Maxlinear (mxl862xx):
         - support for bridge offloading
         - support for VLANs
         - support driver statistics

   - Bluetooth:
      - large number of fixes and new device IDs
      - Mediatek:
         - support MT6639 (MT7927)
         - support MT7902 SDIO

   - WiFi:
      - Intel (iwlwifi):
         - UNII-9 and continuing UHR work
      - MediaTek (mt76):
         - mt7996/mt7925 MLO fixes/improvements
         - mt7996 NPU support (HW eth/wifi traffic offload)
      - Qualcomm (ath12k):
         - monitor mode support on IPQ5332
         - basic hwmon temperature reporting
         - support IPQ5424
      - Realtek:
         - add USB RX aggregation to improve performance
         - add USB TX flow control by tracking in-flight URBs

   - Cellular:
      - IPA v5.2 support"

* tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1561 commits)
  net: pse-pd: fix kernel-doc function name for pse_control_find_by_id()
  wireguard: device: use exit_rtnl callback instead of manual rtnl_lock in pre_exit
  wireguard: allowedips: remove redundant space
  tools: ynl: add sample for wireguard
  wireguard: allowedips: Use kfree_rcu() instead of call_rcu()
  MAINTAINERS: Add netkit selftest files
  selftests/net: Add additional test coverage in nk_qlease
  selftests/net: Split netdevsim tests from HW tests in nk_qlease
  tools/ynl: Make YnlFamily closeable as a context manager
  net: airoha: Add missing PPE configurations in airoha_ppe_hw_init()
  net: airoha: Fix VIP configuration for AN7583 SoC
  net: caif: clear client service pointer on teardown
  net: strparser: fix skb_head leak in strp_abort_strp()
  net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
  selftests/bpf: add test for xdp_master_redirect with bond not up
  net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master
  net: airoha: Remove PCE_MC_EN_MASK bit in REG_FE_PCE_CFG configuration
  sctp: disable BH before calling udp_tunnel_xmit_skb()
  sctp: fix missing encap_port propagation for GSO fragments
  net: airoha: Rely on net_device pointer in ETS callbacks
  ...

kernfs has historically used const void * to pass around namespace tags
used for directory-level namespace filtering. The only current user of
this is sysfs network namespace tagging where struct net pointers are
cast to void *.

Replace all const void * namespace parameters with const struct
ns_common * throughout the kernfs, sysfs, and kobject namespace layers.
This includes the kobj_ns_type_operations callbacks, kobject_namespace(),
and all sysfs/kernfs APIs that accept or return namespace tags.

Passing struct ns_common is needed because various codepaths require
access to the underlying namespace. A struct ns_common can always be
converted back to the concrete namespace type (e.g., struct net) via
container_of() or to_ns_common() in the reverse direction.

This is a preparatory change for switching to ns_id-based directory
iteration to prevent a KASLR pointer leak through the current use of
raw namespace pointers as hash seeds and comparison keys.

Signed-off-by: Christian Brauner <brauner@kernel.org>

This happened to be included transitively via a long chain starting with
<linux/bitops.h>, but it's less fragile to include it explicitly.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Link: https://patch.msgid.link/20260409030333.13024-1-ebiggers@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Export michael_mic() so that the ath11k and ath12k drivers can call it.
In addition, move it from mac80211 to cfg80211 so that the ipw2x00
drivers, which depend on cfg80211 but not mac80211, can also call it.

Currently these drivers have their own local implementations of
michael_mic() based on crypto_shash, which is redundant and inefficient.
By consolidating all the Michael MIC code into cfg80211, we'll be able
to remove the duplicate Michael MIC code in the crypto/ directory.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Link: https://patch.msgid.link/20260408030651.80336-3-ebiggers@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Johannes Berg says:

====================
A fairly big set of changes all over, notably with:
 - cfg80211: new APIs for NAN (Neighbor Aware Networking,
   aka Wi-Fi Aware) so less work must be in firmware
 - mt76:
   - mt7996/mt7925 MLO fixes/improvements
   - mt7996 NPU support (HW eth/wifi traffic offload)
 - iwlwifi: UNII-9 and continuing UHR work

* tag 'wireless-next-2026-03-26' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (230 commits)
  wifi: mac80211: ignore reserved bits in reconfiguration status
  wifi: cfg80211: allow protected action frame TX for NAN
  wifi: ieee80211: Add some missing NAN definitions
  wifi: nl80211: Add a notification to notify NAN channel evacuation
  wifi: nl80211: add NL80211_CMD_NAN_ULW_UPDATE notification
  wifi: nl80211: allow reporting spurious NAN Data frames
  wifi: cfg80211: allow ToDS=0/FromDS=0 data frames on NAN data interfaces
  wifi: nl80211: define an API for configuring the NAN peer's schedule
  wifi: nl80211: add support for NAN stations
  wifi: cfg80211: separately store HT, VHT and HE capabilities for NAN
  wifi: cfg80211: add support for NAN data interface
  wifi: cfg80211: make sure NAN chandefs are valid
  wifi: cfg80211: Add an API to configure local NAN schedule
  wifi: mac80211: cleanup error path of ieee80211_do_open
  wifi: mac80211: extract channel logic from link logic
  wifi: iwlwifi: mld: set RX_FLAG_RADIOTAP_TLV_AT_END generically
  wifi: iwlwifi: reduce the number of prints upon firmware crash
  wifi: iwlwifi: fix the description of SESSION_PROTECTION_CMD
  wifi: iwlwifi: mld: introduce iwl_mld_vif_fw_id_valid
  wifi: iwlwifi: mld: block EMLSR during TDLS connections
  ...
====================

Link: https://patch.msgid.link/20260326152021.305959-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Allow transmitting protected dual of public action frames on
NAN device and NAN data interfaces, since NAN action frames
may be protected and can be sent on both.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20260318143604.73801a92180c.I16000c3e1e2bbc320457db1ac728d789bb2f36c6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>