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nxpwifi_uap_event_sta_assoc() exposes the association request IEs that
the firmware reports in the uAP association event, which the driver
copies into the fixed-size event_body[] buffer.
event->len is supplied by firmware and is not validated. A value smaller
than the header underflows the subtraction used for assoc_req_ies_len,
while a larger value can make the IE range extend beyond event_body[].
Subsequent IE parsing can then read past the adapter object.
Validate both bounds before using the firmware-reported length.
nxpwifi was derived from mwifiex before commit f0858bfc7d3c ("wifi:
mwifiex: bound uAP association event IEs to the event buffer") and
retains the same unchecked length. Apply the equivalent bounds check
here.
Fixes: 73b01e57ed3e ("wifi: nxp: add nxpwifi driver for IW61x")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Reviewed-by: Jeff Chen <jeff.chen_1@nxp.com>
Link: https://patch.msgid.link/20260729082457.1897303-1-lilinmao@kylinos.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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nxpwifi synchronous commands keep the caller-provided data buffer in
cmd_node->data_buf. Several callers pass stack-allocated objects there,
for example nxpwifi_get_chan_type() and the timeshare_coex debugfs
handlers.
If wait_event_interruptible_timeout() is interrupted or times out, the
caller can return and release that stack object while the command is still
current. nxpwifi_cancel_all_pending_cmd() deliberately keeps the current
command because a response may still arrive. A late firmware response can
then write through cmd_node->data_buf into the stale stack address.
After cancelling pending commands, detach the caller-owned buffer from the
still-current command under nxpwifi_cmd_lock.
Unlike the host command response path, several command response callbacks
do not tolerate a NULL data buffer. Most of them ignore it or check it
already, but nxpwifi_ret_sta_get_chan_info(),
nxpwifi_ret_sta_hs_wakeup_reason() and nxpwifi_ret_sta_robust_coex()
dereference it unconditionally, so let them discard a detached response.
No caller passes a NULL buffer to these commands today, so this only
affects the newly introduced detached state.
nxpwifi was derived from mwifiex before commit ef06882c7d8a ("wifi:
mwifiex: Detach sync cmd buffer on interrupted wait") and retains the same
lifetime bug. Apply the equivalent buffer detachment here.
Fixes: 73b01e57ed3e ("wifi: nxp: add nxpwifi driver for IW61x")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Link: https://patch.msgid.link/20260729124713.2849018-1-lilinmao@kylinos.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Fix various development-phase bugs, code quality, and logical issues
reported by the kernel test robot (using the Smatch static analysis tool).
The following addressable fixes are included:
- 11n.c & 11ax.c: Fix potential NULL pointer dereferences by correcting
logical operators (&& to ||) in 11n.c and hoisting the bss_desc
verification to the top of the function in 11ax.c.
- 11n.c: Fix a severe Use-After-Free (UAF) memory corruption during RCU
list traversal. Restore the proper list_for_each_entry_safe() loop
structure along with the required array index [i] within the locked
writer path.
- sdio.c: Fix a missing unwind resource cleanup pathway where a protocol
error branch returned directly via -EINVAL instead of using
'goto term_cmd', leaving the SDIO hardware state machine out of sync.
- main.h: Fix a signedness mismatch bug where nxpwifi_get_unused_bss_num()
could return -2 as an unsigned integer fallback.
- util.c: Remove a redundant and dead condition check (position <= 15)
which was always true for a 4-bit unsigned bit-field member variable.
- cfg80211.c: Clean up a dead unreachable 'return 0' at the bottom of the
switch-case logic.
- uap_txrx.c: Clean up mismatched and inconsistent indentations within the
handling of multicast RX forward paths.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202608020855.QwN5n7i5-lkp@intel.com/
Assisted-by: Gemini:unknown-model
Signed-off-by: Jeff Chen <jeff.chen_1@nxp.com>
Link: https://patch.msgid.link/20260803162741.438820-1-chunfan.chen@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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All supported NXP WiFi wireless adapters have an SDIO interface.
Hence there is no point in asking the user about these adapters when
configuring a kernel without MMC support.
Fix this by making the core driver symbol invisible, and selecting it by
its user when needed.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/aefb37d8398175cb2fb520cb5f725a85bcd3049d.1786010763.git.geert+renesas@glider.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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rx_reorder_ptr is a dynamically allocated array which is done near the
main struct allocation. Combine the two to avoid freeing separately.
Also fix the type to what it actually is. void is normally used to avoid
casting but there's no need here.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Tested-by: Jeff Chen <jeff.chen_1@nxp.com>
Reviewed-by: Jeff Chen <jeff.chen_1@nxp.com>
Link: https://patch.msgid.link/20260729183715.691287-1-rosenp@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The remain_on_channel, mgmt_tx, and probe_peer ops previously used
a u64 *cookie output parameter. Now that cfg80211 pre-assigns the
cookie value before invoking drivers, the parameter conveys a value
from caller to driver, not the other way around. Convert it to a
plain u64 input parameter across the ops struct (cfg80211.h),
rdev-ops.h wrappers, nl80211.c/mlme.c call sites, mac80211, and
all driver implementations.
The tx_control_port op is excluded: its cookie pointer is nullable
(passed as NULL when dont_wait_for_ack is set), so the nullable
pointer semantics are still required.
Internal mac80211 helpers ieee80211_start_roc_work() and
ieee80211_attach_ack_skb() still take u64 *cookie because they
assign to the pointee; their callers now pass &cookie to take the
address of the local value parameter.
wil6210's internal wil_p2p_listen() is also updated to take u64
cookie since it is called directly from the remain_on_channel
callback.
Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260731123509.1975281-12-arend.vanspriel@broadcom.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Stop calling nxpwifi_roc_cookie() to generate cookies in
nxpwifi_cfg80211_remain_on_channel() and nxpwifi_cfg80211_mgmt_tx().
Use the pre-assigned cookie from cfg80211 instead.
Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260731123509.1975281-9-arend.vanspriel@broadcom.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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nxpwifi_update_bss_desc_with_ie() dispatches on elem->data[0] for
WLAN_EID_EXTENSION without checking that the element has a payload.
A well-formed extension element carries at least the element ID
extension byte, but nothing enforces that in the IE stream, and the
loop accepts a zero-length element because its header alone fits.
elem->data[0] then reads the byte after the element, which is past the
kmemdup()ed IE buffer when that element ends the stream.
Fixes: 73b01e57ed3e ("wifi: nxp: add nxpwifi driver for IW61x")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Link: https://patch.msgid.link/20260724103656.2494129-1-lilinmao@kylinos.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add support for the NXP IW61x wireless devices.
The nxpwifi driver implements a full-MAC design and integrates with
cfg80211 for configuration and control, supporting both station (STA)
and access point (AP) modes.
The driver provides a firmware-based command/event interface using TLV
messages, with the core handling command processing, event dispatching,
and device lifecycle management. A SDIO transport layer is implemented
to support IW61x devices.
Key features include:
- 802.11n/ac/ax (HT/VHT/HE) capability support
- Scan, association, and connection management
- Data path handling for TX/RX, including aggregation and reorder
- WMM QoS support and traffic prioritization
- 802.11h (DFS/TPC) support for regulatory compliance
- cfg80211 integration for STA and AP operations
- Debugfs and ethtool support
- Wake-on-LAN support
The driver translates cfg80211 configuration into firmware commands
and implements required data path processing in software where needed.
Signed-off-by: Jeff Chen <jeff.chen_1@nxp.com>
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