linux.git/drivers/net/wireless, branch v7.0 Linux kernel source tree wifi: rt2x00usb: fix devres lifetime 2026-04-07T10:34:52+00:00 Johan Hovold johan@kernel.org 2026-03-27T11:32:19+00:00 25369b22223d1c56e42a0cd4ac9137349d5a898e USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the USB anchor lifetime so that it is released on driver unbind. Fixes: 8b4c0009313f ("rt2x00usb: Use usb anchor to manage URB") Cc: stable@vger.kernel.org # 4.7 Cc: Vishal Thanki <vishalthanki@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: Stanislaw Gruszka <stf_xl@wp.pl> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260327113219.1313748-1-johan@kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
USB drivers bind to USB interfaces and any device managed resources
should have their lifetime tied to the interface rather than parent USB
device. This avoids issues like memory leaks when drivers are unbound
without their devices being physically disconnected (e.g. on probe
deferral or configuration changes).

Fix the USB anchor lifetime so that it is released on driver unbind.

Fixes: 8b4c0009313f ("rt2x00usb: Use usb anchor to manage URB")
Cc: stable@vger.kernel.org	# 4.7
Cc: Vishal Thanki <vishalthanki@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20260327113219.1313748-1-johan@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
wifi: brcmfmac: validate bsscfg indices in IF events 2026-04-07T10:34:20+00:00 Pengpeng Hou pengpeng@iscas.ac.cn 2026-03-23T07:45:51+00:00 304950a467d83678bd0b0f46331882e2ac23b12d brcmf_fweh_handle_if_event() validates the firmware-provided interface index before it touches drvr->iflist[], but it still uses the raw bsscfgidx field as an array index without a matching range check. Reject IF events whose bsscfg index does not fit in drvr->iflist[] before indexing the interface array. Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn> Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com> Link: https://patch.msgid.link/20260323074551.93530-1-pengpeng@iscas.ac.cn [add missing wifi prefix] Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
brcmf_fweh_handle_if_event() validates the firmware-provided interface
index before it touches drvr->iflist[], but it still uses the raw
bsscfgidx field as an array index without a matching range check.

Reject IF events whose bsscfg index does not fit in drvr->iflist[]
before indexing the interface array.

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260323074551.93530-1-pengpeng@iscas.ac.cn
[add missing wifi prefix]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
wifi: brcmsmac: Fix dma_free_coherent() size 2026-04-07T10:34:03+00:00 Thomas Fourier fourier.thomas@gmail.com 2026-02-18T13:07:37+00:00 12cd7632757a54ce586e36040210b1a738a0fc53 dma_alloc_consistent() may change the size to align it. The new size is saved in alloced. Change the free size to match the allocation size. Fixes: 5b435de0d786 ("net: wireless: add brcm80211 drivers") Cc: <stable@vger.kernel.org> Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com> Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com> Link: https://patch.msgid.link/20260218130741.46566-3-fourier.thomas@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
dma_alloc_consistent() may change the size to align it. The new size is
saved in alloced.

Change the free size to match the allocation size.

Fixes: 5b435de0d786 ("net: wireless: add brcm80211 drivers")
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260218130741.46566-3-fourier.thomas@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
wifi: virt_wifi: remove SET_NETDEV_DEV to avoid use-after-free 2026-03-25T19:46:57+00:00 Alexander Popov alex.popov@linux.com 2026-03-24T22:46:02+00:00 789b06f9f39cdc7e895bdab2c034e39c41c8f8d6 Currently we execute `SET_NETDEV_DEV(dev, &priv->lowerdev->dev)` for the virt_wifi net devices. However, unregistering a virt_wifi device in netdev_run_todo() can happen together with the device referenced by SET_NETDEV_DEV(). It can result in use-after-free during the ethtool operations performed on a virt_wifi device that is currently being unregistered. Such a net device can have the `dev.parent` field pointing to the freed memory, but ethnl_ops_begin() calls `pm_runtime_get_sync(dev->dev.parent)`. Let's remove SET_NETDEV_DEV for virt_wifi to avoid bugs like this: ================================================================== BUG: KASAN: slab-use-after-free in __pm_runtime_resume+0xe2/0xf0 Read of size 2 at addr ffff88810cfc46f8 by task pm/606 Call Trace: <TASK> dump_stack_lvl+0x4d/0x70 print_report+0x170/0x4f3 ? __pfx__raw_spin_lock_irqsave+0x10/0x10 kasan_report+0xda/0x110 ? __pm_runtime_resume+0xe2/0xf0 ? __pm_runtime_resume+0xe2/0xf0 __pm_runtime_resume+0xe2/0xf0 ethnl_ops_begin+0x49/0x270 ethnl_set_features+0x23c/0xab0 ? __pfx_ethnl_set_features+0x10/0x10 ? kvm_sched_clock_read+0x11/0x20 ? local_clock_noinstr+0xf/0xf0 ? local_clock+0x10/0x30 ? kasan_save_track+0x25/0x60 ? __kasan_kmalloc+0x7f/0x90 ? genl_family_rcv_msg_attrs_parse.isra.0+0x150/0x2c0 genl_family_rcv_msg_doit+0x1e7/0x2c0 ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 ? __pfx_cred_has_capability.isra.0+0x10/0x10 ? stack_trace_save+0x8e/0xc0 genl_rcv_msg+0x411/0x660 ? __pfx_genl_rcv_msg+0x10/0x10 ? __pfx_ethnl_set_features+0x10/0x10 netlink_rcv_skb+0x121/0x380 ? __pfx_genl_rcv_msg+0x10/0x10 ? __pfx_netlink_rcv_skb+0x10/0x10 ? __pfx_down_read+0x10/0x10 genl_rcv+0x23/0x30 netlink_unicast+0x60f/0x830 ? __pfx_netlink_unicast+0x10/0x10 ? __pfx___alloc_skb+0x10/0x10 netlink_sendmsg+0x6ea/0xbc0 ? __pfx_netlink_sendmsg+0x10/0x10 ? __futex_queue+0x10b/0x1f0 ____sys_sendmsg+0x7a2/0x950 ? copy_msghdr_from_user+0x26b/0x430 ? __pfx_____sys_sendmsg+0x10/0x10 ? __pfx_copy_msghdr_from_user+0x10/0x10 ___sys_sendmsg+0xf8/0x180 ? __pfx____sys_sendmsg+0x10/0x10 ? __pfx_futex_wait+0x10/0x10 ? fdget+0x2e4/0x4a0 __sys_sendmsg+0x11f/0x1c0 ? __pfx___sys_sendmsg+0x10/0x10 do_syscall_64+0xe2/0x570 ? exc_page_fault+0x66/0xb0 entry_SYSCALL_64_after_hwframe+0x77/0x7f </TASK> This fix may be combined with another one in the ethtool subsystem: https://lore.kernel.org/all/20260322075917.254874-1-alex.popov@linux.com/T/#u Fixes: d43c65b05b848e0b ("ethtool: runtime-resume netdev parent in ethnl_ops_begin") Cc: stable@vger.kernel.org Signed-off-by: Alexander Popov <alex.popov@linux.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20260324224607.374327-1-alex.popov@linux.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
Currently we execute `SET_NETDEV_DEV(dev, &priv->lowerdev->dev)` for
the virt_wifi net devices. However, unregistering a virt_wifi device in
netdev_run_todo() can happen together with the device referenced by
SET_NETDEV_DEV().

It can result in use-after-free during the ethtool operations performed
on a virt_wifi device that is currently being unregistered. Such a net
device can have the `dev.parent` field pointing to the freed memory,
but ethnl_ops_begin() calls `pm_runtime_get_sync(dev->dev.parent)`.

Let's remove SET_NETDEV_DEV for virt_wifi to avoid bugs like this:

 ==================================================================
 BUG: KASAN: slab-use-after-free in __pm_runtime_resume+0xe2/0xf0
 Read of size 2 at addr ffff88810cfc46f8 by task pm/606

 Call Trace:
  <TASK>
  dump_stack_lvl+0x4d/0x70
  print_report+0x170/0x4f3
  ? __pfx__raw_spin_lock_irqsave+0x10/0x10
  kasan_report+0xda/0x110
  ? __pm_runtime_resume+0xe2/0xf0
  ? __pm_runtime_resume+0xe2/0xf0
  __pm_runtime_resume+0xe2/0xf0
  ethnl_ops_begin+0x49/0x270
  ethnl_set_features+0x23c/0xab0
  ? __pfx_ethnl_set_features+0x10/0x10
  ? kvm_sched_clock_read+0x11/0x20
  ? local_clock_noinstr+0xf/0xf0
  ? local_clock+0x10/0x30
  ? kasan_save_track+0x25/0x60
  ? __kasan_kmalloc+0x7f/0x90
  ? genl_family_rcv_msg_attrs_parse.isra.0+0x150/0x2c0
  genl_family_rcv_msg_doit+0x1e7/0x2c0
  ? __pfx_genl_family_rcv_msg_doit+0x10/0x10
  ? __pfx_cred_has_capability.isra.0+0x10/0x10
  ? stack_trace_save+0x8e/0xc0
  genl_rcv_msg+0x411/0x660
  ? __pfx_genl_rcv_msg+0x10/0x10
  ? __pfx_ethnl_set_features+0x10/0x10
  netlink_rcv_skb+0x121/0x380
  ? __pfx_genl_rcv_msg+0x10/0x10
  ? __pfx_netlink_rcv_skb+0x10/0x10
  ? __pfx_down_read+0x10/0x10
  genl_rcv+0x23/0x30
  netlink_unicast+0x60f/0x830
  ? __pfx_netlink_unicast+0x10/0x10
  ? __pfx___alloc_skb+0x10/0x10
  netlink_sendmsg+0x6ea/0xbc0
  ? __pfx_netlink_sendmsg+0x10/0x10
  ? __futex_queue+0x10b/0x1f0
  ____sys_sendmsg+0x7a2/0x950
  ? copy_msghdr_from_user+0x26b/0x430
  ? __pfx_____sys_sendmsg+0x10/0x10
  ? __pfx_copy_msghdr_from_user+0x10/0x10
  ___sys_sendmsg+0xf8/0x180
  ? __pfx____sys_sendmsg+0x10/0x10
  ? __pfx_futex_wait+0x10/0x10
  ? fdget+0x2e4/0x4a0
  __sys_sendmsg+0x11f/0x1c0
  ? __pfx___sys_sendmsg+0x10/0x10
  do_syscall_64+0xe2/0x570
  ? exc_page_fault+0x66/0xb0
  entry_SYSCALL_64_after_hwframe+0x77/0x7f
  </TASK>

This fix may be combined with another one in the ethtool subsystem:
https://lore.kernel.org/all/20260322075917.254874-1-alex.popov@linux.com/T/#u

Fixes: d43c65b05b848e0b ("ethtool: runtime-resume netdev parent in ethnl_ops_begin")
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Popov <alex.popov@linux.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260324224607.374327-1-alex.popov@linux.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
wifi: iwlwifi: mvm: fix potential out-of-bounds read in iwl_mvm_nd_match_info_handler() 2026-03-24T15:03:48+00:00 Alexey Velichayshiy a.velichayshiy@ispras.ru 2026-02-07T15:03:22+00:00 744fabc338e87b95c4d1ff7c95bc8c0f834c6d99 The memcpy function assumes the dynamic array notif->matches is at least as large as the number of bytes to copy. Otherwise, results->matches may contain unwanted data. To guarantee safety, extend the validation in one of the checks to ensure sufficient packet length. Found by Linux Verification Center (linuxtesting.org) with SVACE. Cc: stable@vger.kernel.org Fixes: 5ac54afd4d97 ("wifi: iwlwifi: mvm: Add handling for scan offload match info notification") Signed-off-by: Alexey Velichayshiy <a.velichayshiy@ispras.ru> Link: https://patch.msgid.link/20260207150335.1013646-1-a.velichayshiy@ispras.ru Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
The memcpy function assumes the dynamic array notif->matches is at least
as large as the number of bytes to copy. Otherwise, results->matches may
contain unwanted data. To guarantee safety, extend the validation in one
of the checks to ensure sufficient packet length.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Cc: stable@vger.kernel.org
Fixes: 5ac54afd4d97 ("wifi: iwlwifi: mvm: Add handling for scan offload match info notification")
Signed-off-by: Alexey Velichayshiy <a.velichayshiy@ispras.ru>
Link: https://patch.msgid.link/20260207150335.1013646-1-a.velichayshiy@ispras.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Merge tag 'ath-current-20260324' of git://git.kernel.org/pub/scm/linux/kernel/git/ath/ath 2026-03-24T14:41:09+00:00 Johannes Berg johannes.berg@intel.com 2026-03-24T14:40:54+00:00 6525a549ecba71e3c48a68a5250da830cf9db2cc Jeff Johnson says: ================== ath.git update for v7.0-rc6 For both ath11k and ath12k use the correct TID when stopping an AMPDU session. ================== Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
Jeff Johnson says:
==================
ath.git update for v7.0-rc6

For both ath11k and ath12k use the correct TID when stopping an AMPDU
session.
==================

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Merge tag 'iwlwifi-fixes-2026-03-24' of https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next 2026-03-24T14:40:34+00:00 Johannes Berg johannes.berg@intel.com 2026-03-24T14:40:11+00:00 249ddd5fe21fb1a29430a1ef0dff818689235f6a Miri Korenblit says: ==================== wifi: iwlwifi: fixes - 2026-03-24 - Fix MLO scan timing (record the scan start in FW) - don't send a 6E related command when not supported - correctly set wifi generation data ==================== Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
Miri Korenblit says:
====================
wifi: iwlwifi: fixes - 2026-03-24

- Fix MLO scan timing (record the scan start in FW)
- don't send a 6E related command when not supported
- correctly set wifi generation data
====================

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
wifi: wl1251: validate packet IDs before indexing tx_frames 2026-03-24T14:32:31+00:00 Pengpeng Hou pengpeng@iscas.ac.cn 2026-03-23T08:08:45+00:00 0fd56fad9c56356e7fa7a7c52e7ecbf807a44eb0 wl1251_tx_packet_cb() uses the firmware completion ID directly to index the fixed 16-entry wl->tx_frames[] array. The ID is a raw u8 from the completion block, and the callback does not currently verify that it fits the array before dereferencing it. Reject completion IDs that fall outside wl->tx_frames[] and keep the existing NULL check in the same guard. This keeps the fix local to the trust boundary and avoids touching the rest of the completion flow. Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn> Link: https://patch.msgid.link/20260323080845.40033-1-pengpeng@iscas.ac.cn Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
wl1251_tx_packet_cb() uses the firmware completion ID directly to index
the fixed 16-entry wl->tx_frames[] array. The ID is a raw u8 from the
completion block, and the callback does not currently verify that it
fits the array before dereferencing it.

Reject completion IDs that fall outside wl->tx_frames[] and keep the
existing NULL check in the same guard. This keeps the fix local to the
trust boundary and avoids touching the rest of the completion flow.

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260323080845.40033-1-pengpeng@iscas.ac.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
wifi: wilc1000: fix u8 overflow in SSID scan buffer size calculation 2026-03-24T14:32:14+00:00 Yasuaki Torimaru yasuakitorimaru@gmail.com 2026-03-24T10:06:24+00:00 d049e56b1739101d1c4d81deedb269c52a8dbba0 The variable valuesize is declared as u8 but accumulates the total length of all SSIDs to scan. Each SSID contributes up to 33 bytes (IEEE80211_MAX_SSID_LEN + 1), and with WILC_MAX_NUM_PROBED_SSID (10) SSIDs the total can reach 330, which wraps around to 74 when stored in a u8. This causes kmalloc to allocate only 75 bytes while the subsequent memcpy writes up to 331 bytes into the buffer, resulting in a 256-byte heap buffer overflow. Widen valuesize from u8 to u32 to accommodate the full range. Fixes: c5c77ba18ea6 ("staging: wilc1000: Add SDIO/SPI 802.11 driver") Cc: stable@vger.kernel.org Signed-off-by: Yasuaki Torimaru <yasuakitorimaru@gmail.com> Link: https://patch.msgid.link/20260324100624.983458-1-yasuakitorimaru@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> 
The variable valuesize is declared as u8 but accumulates the total
length of all SSIDs to scan. Each SSID contributes up to 33 bytes
(IEEE80211_MAX_SSID_LEN + 1), and with WILC_MAX_NUM_PROBED_SSID (10)
SSIDs the total can reach 330, which wraps around to 74 when stored
in a u8.

This causes kmalloc to allocate only 75 bytes while the subsequent
memcpy writes up to 331 bytes into the buffer, resulting in a 256-byte
heap buffer overflow.

Widen valuesize from u8 to u32 to accommodate the full range.

Fixes: c5c77ba18ea6 ("staging: wilc1000: Add SDIO/SPI 802.11 driver")
Cc: stable@vger.kernel.org
Signed-off-by: Yasuaki Torimaru <yasuakitorimaru@gmail.com>
Link: https://patch.msgid.link/20260324100624.983458-1-yasuakitorimaru@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
wifi: ath12k: Pass the correct value of each TID during a stop AMPDU session 2026-03-24T13:44:00+00:00 Reshma Immaculate Rajkumar reshma.rajkumar@oss.qualcomm.com 2026-02-27T11:01:23+00:00 4242625f272974dd1947f73b10d884eab3b277cd With traffic ongoing for data TID [TID 0], an DELBA request to stop AMPDU for the BA session was received on management TID [TID 4]. The corresponding TID number was incorrectly passed to stop the BA session, resulting in the BA session for data TIDs being stopped and the BA size being reduced to 1, causing an overall dip in TCP throughput. Fix this issue by passing the correct argument from ath12k_dp_rx_ampdu_stop() to ath12k_dp_arch_peer_rx_tid_reo_update() during an AMPDU stop session. Instead of passing peer->dp_peer->rx_tid, which is the base address of the array, corresponding to TID 0, pass the value of &peer->dp_peer->rx_tid[params->tid]. With this, the different TID numbers are accounted for. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1 Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices") Signed-off-by: Reshma Immaculate Rajkumar <reshma.rajkumar@oss.qualcomm.com> Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com> Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com> Link: https://patch.msgid.link/20260227110123.3726354-1-reshma.rajkumar@oss.qualcomm.com Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com> 
With traffic ongoing for data TID [TID 0], an DELBA request to
stop AMPDU for the BA session was received on management TID [TID 4].
The corresponding TID number was incorrectly passed to stop the BA session,
resulting in the BA session for data TIDs being stopped and the BA size
being reduced to 1, causing an overall dip in TCP throughput.

Fix this issue by passing the correct argument from
ath12k_dp_rx_ampdu_stop() to ath12k_dp_arch_peer_rx_tid_reo_update()
during an AMPDU stop session. Instead of passing peer->dp_peer->rx_tid,
which is the base address of the array, corresponding to TID 0, pass
the value of &peer->dp_peer->rx_tid[params->tid]. With this, the
different TID numbers are accounted for.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1

Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Signed-off-by: Reshma Immaculate Rajkumar <reshma.rajkumar@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20260227110123.3726354-1-reshma.rajkumar@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>