Pull networking fixes from Paolo Abeni:
 "This is again larger than usual: the backlog accumulated in the past weeks
  is not done yet. I'm not aware of any known pending regression.

  Including fixes from netfilter, Bluetooth, WiFi and CAN.

  Current release - regressions:

   - bluetooth: remove unnecessary hci_conn_get in create_conn_sync

   - can: isotp: fix timer drain order, wakeup handling and tx_gen
     ordering

   - eth:
       - tun/vhost: revert avoid ptr_ring tail-drop when a qdisc is
         present

  Previous releases - regressions:

   - core: do not send ICMP/NDISC Redirects when peer allocation fails

   - ipv6: take nexthop lock for f6i_list walks in replace check and
     notify

   - wifi: fix an ath12k MLO regression impacting WCN7850/QCC2072.

   - netfilter: nf_tables: make nft_object rhltable per table

   - af_unix: fix listen() succeeding on sockets in the wrong state

   - openvswitch: fix potential UAF on meter attach failure

   - bluetooth:
       - fix advertising data UAFs
       - avoid deadlocks in iso_sock_timeout

   - smc: fix socket use-after-free during link group termination

   - dpll: use pin owner's dpll ref for pin-level attribute reporting

   - eth:
       - veth: convert frag_list skbs before running XDP
       - ice: wait for reset completion in ice_resume()
       - igc: remove napi_synchronize() in igc_down()
       - vxlan: use pskb_network_may_pull() for transmit path header pulls

  Previous releases - always broken:

   - xsk: fix AF_XDP multi-buffer Tx descriptor reclaim

   - psp: fix NULL genl_sock deref race with concurrent netns teardown

   - netfilter: widen NAT rewrite delta to s32 in sip_help_tcp()

   - can: peak_usb: fix double free of transfer buffer on URB submit error

   - dibs: fix use-after-free of dmb_node in loopback attach/detach/unregister

   - sctp: prevent peer transport count overflow

   - dsa: mt7530: error out on failed reads in MT7531 PHY polling

   - eth:
       - idpf: bound interrupt-vector register fill to the allocated array"

* tag 'net-7.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (156 commits)
  qede: sync udp_tunnel ports outside qede_lock in the recovery path
  net: openvswitch: fix potential UAF on meter attach failure
  octeontx2-pf: Set correct sequence for carrier off and tx queue stop
  net: libwx: fix FDIR ATR queue mismatch for software VLAN packets
  net: dsa: realtek: use devm_mutex_init for l2_lock
  net: dsa: realtek: use devm_mutex_init for vlan_lock
  net: dsa: realtek: use devm_mutex_init for regmap lock
  net: dsa: realtek: rtl8365mb: use devm_mutex_init for mib_lock
  ptp: netc: fix potential interrupt storm caused by incorrect unbind order
  net: mana: Return error code from mana_create_rxq()
  net: openvswitch: fix skb leak on flow key update failure during ct
  net: openvswitch: fix skb leak on flow key update failure during recirculation
  net: stmmac: Fix E2E delay mechanism
  net: dsa: mt7530: error out on failed reads in MT7531 PHY polling
  net: dsa: mt7530: error out on failed reads in ATC/VTCR command polling
  net: dsa: mt7530: check bus->read() errors in the MDIO regmap backend
  Revert "tun/tap: add ptr_ring consume helper with netdev queue wakeup"
  Revert "vhost-net: wake queue of tun/tap after ptr_ring consume"
  Revert "ptr_ring: move free-space check into separate helper"
  Revert "tun/tap & vhost-net: avoid ptr_ring tail-drop when a qdisc is present"
  ...

Marc Kleine-Budde says:

====================
pull-request: can 2026-07-29

this is a pull request of 20 patches for net/main.

The first 2 patches fix problems in the CAN J1939 protocol and are by
Tetsuo Handa and Oleksij Rempel.

The next 2 patches fix problems in the CAN ISOTP protocol and are by
Oliver Hartkopp and Minhong He.

Avi Weiss contributes contributed 4 fixes for the ctucanfd, Pengpeng
Hou's patch adds a missing MODULE_DEVICE_TABLE.

The patches for the peak_usb driver are contributed by James Gao,
Maoyi Xie, Maoyi Xie and add sanity checks for the USB bulk data
parsing and fix a double free.

2 fixes for the kvaser_usb driver are provided by Abdun Nihaal and
Pengpeng Hou, a mem leak is fixed and sanity checks for the USB bulk
data parsing.

Tu Nguyen's patch for the rcar_canfd driver fixes the initializing
flow.

Pengpeng Hou contributes a patch for the softing driver to validate
the firmware record spans.

Lucas Martins Alves's patch for the c_can driver keeps the controller
in init mode until configuration is complete.

A patch by my add missing URB resubmission on skb allocation failure
to the gs_usb driver.

Guangshuo Li's patch for the etas_es58x driver fixes a RX buffer leak.

The last patch is by Pengpeng Hou and adds sanity checks to the USB
bulk data parsing of the ems_usb driver.

linux-can-fixes-for-7.2-20260729

* tag 'linux-can-fixes-for-7.2-20260729' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
  can: ems_usb: validate CPC message lengths
  can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure
  can: gs_usb: gs_usb_receive_bulk_callback(): resubmit URB on skb allocation failure
  can: c_can: c_can_chip_config(): keep controller in init mode until bittiming is configured
  can: softing: fw_parse(): validate firmware record spans
  can: rcar_canfd: change the initializing flow for clocks and resets
  can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents
  can: kvaser_usb: kvaser_usb_hydra_get_busparams(): fix memory leak in kvaser_usb_hydra_get_busparams()
  can: peak_usb: validate uCAN receive record lengths
  can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error
  can: peak_usb: add bounds check for USB channel index
  can: ctucanfd: add missing MODULE_DEVICE_TABLE()
  can: ctucanfd: use self-test mode for PRESUME_ACK
  can: ctucanfd: handle bus error interrupts
  can: ctucanfd: mark error-active controller status valid
  can: ctucanfd: unmap BAR0 using base address
  can: isotp: check register_netdevice_notifier() error in module init
  can: isotp: fix timer drain order, wakeup handling and tx_gen ordering
  can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer
  can: j1939: use netdevice_tracker for j1939_{priv,session,ecu} tracking
====================

Link: https://patch.msgid.link/20260729102802.505168-1-mkl@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

While attaching a newly created meter attach_meter() function makes
the new meter visible to other CPUs but can still fail afterwards.
On failure, it detaches the meter back and returns an error.

However, this is an unexpected behavior for the ovs_meter_cmd_set()
that uses a plain kfree(meter) on attach failure without waiting for
RCU readers to stop using it, assuming it was never visible.

This is never a problem for ovs-vswitchd as it always creates meters
before creating any flows that use them.  But the UAF can be triggered
with a custom application using uAPI:

 BUG: KASAN: slab-use-after-free in ovs_meter_execute (net/openvswitch/meter.c:653)
 Read of size 8 at addr ffff88810d152650 by task meter/2508

 Call Trace:
  ovs_meter_execute (net/openvswitch/meter.c:653)
  do_execute_actions (net/openvswitch/actions.c:1407)
  ovs_execute_actions (net/openvswitch/actions.c:1584)
  ovs_packet_cmd_execute (net/openvswitch/datapath.c:703)
  ...
  netlink_sendmsg (af_netlink.c:1900)

 Allocated by task 2519:
  __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
  ovs_meter_cmd_set (net/openvswitch/meter.c:422)
  ...
  netlink_sendmsg (af_netlink.c:1900)

 Freed by task 2519:
  kfree (mm/slub.c:2705 mm/slub.c:6405 mm/slub.c:6720)
  ovs_meter_cmd_set (net/openvswitch/meter.c:479)
  ...
  netlink_sendmsg (af_netlink.c:1900)

Fix that by making sure attach_meter() doesn't make the meter visible
until all the checks are done and the function can't fail anymore.

This also makes sure the "hash" value is calculated after the potential
re-sizing of the table.

Reported by Trend Micro's Zero Day Initiative as ZDI-CAN-31642.

Fixes: c7c4c44c9a95 ("net: openvswitch: expand the meters supported number")
Cc: stable@vger.kernel.org
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Eelco Chaudron <echaudro@redhat.com>
Link: https://patch.msgid.link/20260727121022.198461-1-i.maximets@ovn.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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: ec0d043d05e6 ("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>

do_execute_actions() returns right away when execute_recirc() fails on
the last action as it assumes this function always takes ownership of
the skb when 'last' is true.  But when the flow key update fails, the
function doesn't free the skb and it ends up leaked.

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: 971427f353f3 ("openvswitch: Add recirc and hash action.")
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/20260727181851.306076-2-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Johannes Berg says:

====================
Much quieter, thankfully:
 - a set of ath12k fixes, including a recent
   MLO regression for WCN7850/QCC2072
 - iwlegacy gets rid of a BUG_ON that triggered
 - a couple more robustness/security fixes

* tag 'wireless-2026-07-29' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
  wifi: iwlegacy: replace BUG_ON() with WARN_ON() on num_stations check
  wifi: mac80211: validate individual TWT params before driver setup
  wifi: cfg80211: publish PMSR request before starting the driver
  wifi: mwifiex: use the subframe length when parsing A-MSDU TDLS frames
  wifi: cfg80211: validate IEs in cfg80211_wext_siwgenie()
  wifi: mac80211: fix tid_tx use-after-free on BA session stop
  wifi: ath12k: resolve PENDING ML peer ID from MLO_PEER_MAP HTT event
  wifi: ath12k: defer dp_peer registration when firmware allocates MLD peer ID
  wifi: ath12k: do not advertise MLD peer ID for firmware-allocate devices
  wifi: ath12k: introduce host_alloc_ml_id hardware parameter
  wifi: ath12k: add support for HTT_T2H_MSG_TYPE_MLO_RX_PEER_MAP
  wifi: ath12k: keep ATH12K_PEER_ML_ID_VALID set in ath12k_sta::ml_peer_id
  wifi: ath12k: factor out peer assoc send-and-wait into a helper
  wifi: ath12k: fix out-of-bounds clear_bit in ath12k_mac_dp_peer_cleanup()
====================

Link: https://patch.msgid.link/20260729071954.45655-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

The Adaptation Layer Indication parameter contains a fixed 32-bit
Adaptation Code Point after its parameter header. However,
sctp_verify_param() accepts a header-only parameter because the generic
parameter walker only requires the header to be present.

sctp_process_param() then reads adaptation_ind beyond the declared
parameter. When the malformed parameter is last in an INIT, the read
starts at the receive skb tail, and the value is copied into the state
cookie returned in the INIT ACK. This may disclose four receive-buffer
tail bytes.

Require the declared parameter length to match the fixed structure size
and abort the association through the existing invalid parameter length
path otherwise.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Charles Vosburgh <trilobyte777@gmail.com>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20260727-sctp-adaptation-length-v1-1-0ab58b2810a5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

When adding a source-specific route creates a new subtree, fib6_add()
installs fib6_null_entry as the temporary leaf of the new subtree root
and takes a fib6_info reference for that holder.

If adding the first source leaf fails, the code frees the just allocated
subtree root but leaves that hold behind. fib6_null_entry is a per-netns
sentinel and is freed directly at netns teardown, so this does not keep
the object alive. However, it leaves its visible refcount permanently
elevated and can eventually saturate the refcount on repeated failures.

Drop the null-entry reference before freeing the unlinked subtree root.

Fixes: 5ea715289af6 ("ipv6: broadly use fib6_info_hold() helper")
Signed-off-by: Shuangpeng Bai <shuangpeng.kernel@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Link: https://patch.msgid.link/20260727185339.1545169-1-shuangpeng.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

The race occurs between network namespace removal and PSP device
unregistration.  When a netns is deleted while a PSP device associated
with that netns is concurrently being removed, psp_dev_unregister()
triggers psp_nl_notify_dev() to send a device change notification.
Concurrently, cleanup_net() running in the netns workqueue calls
genl_pernet_exit(), which sets net->genl_sock to NULL. If
genl_pernet_exit() wins the race, two sites in psp_nl_multicast_per_ns()
then dereference the NULL socket and crash:

CPU 0 (netns teardown)       CPU 1 (PSP device unregister)
======================       =============================
cleanup_net [workqueue]
  genl_pernet_exit()         psp_dev_unregister()
    net->genl_sock = NULL      psp_nl_notify_dev()
                                 psp_nl_multicast_per_ns()
                                   build_ntf()
                                     -> netlink_has_listeners(NULL)
                                     /* crash */
                                   genlmsg_multicast_netns()
                                     -> nlmsg_multicast_filtered(NULL)
                                     /* crash */

Fix by replacing the bare dev_net() calls with maybe_get_net().
maybe_get_net() returns NULL if the namespace is already dying.
Holding the reference ensures genl_sock remains valid across both the
build_ntf() and genlmsg_multicast_netns() calls.

Fixes: 00c94ca2b99e ("psp: base PSP device support")
Fixes: 06c2dce2d0f6 ("psp: add new netlink cmd for dev-assoc and dev-disassoc")
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Akhilesh Samineni <akhilesh.samineni@broadcom.com>
Signed-off-by: Kiran Kella <kiran.kella@broadcom.com>
Link: https://patch.msgid.link/20260727101628.502042-1-kiran.kella@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Register the netdevice notifier before can_proto_register() and check the
return value. If protocol registration fails, unregister the notifier
before returning the error.

Align isotp_module_init() with the reordering already done for raw.c
(commit c28b3bffe49e ("can: raw: process optimization in raw_init()")) and
bcm.c (commit edd1a7e42f1d ("can: bcm: registration process optimization
in bcm_module_init()")).

Fixes: 8d0caedb7596 ("can: bcm/raw/isotp: use per module netdevice notifier")
Signed-off-by: Minhong He <heminhong@kylinos.cn>
Link: https://patch.msgid.link/20260729085656.134523-1-heminhong@kylinos.cn
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>