linux-stable.git/drivers/net/wireless, branch v5.4.301

wifi: mt76: fix potential memory leak in mt76_wmac_probe()

2025-10-29T12:59:48+00:00

[ Upstream commit 42754b7de2b1a2cf116c5e3f1e8e78392f4ed700 ]

In mt76_wmac_probe(), when the mt76_alloc_device() call succeeds, memory
is allocated for both struct ieee80211_hw and a workqueue. However, on
the error path, the workqueue is not freed. Fix that by calling
mt76_free_device() on the error path.

Fixes: c8846e101502 ("mt76: add driver for MT7603E and MT7628/7688")
Signed-off-by: Abdun Nihaal 
Reviewed-by: Jiri Slaby 
Link: https://patch.msgid.link/20250709145532.41246-1-abdun.nihaal@gmail.com
Signed-off-by: Felix Fietkau 
Signed-off-by: Sasha Levin

wifi: mwifiex: send world regulatory domain to driver

2025-10-29T12:59:47+00:00

[ Upstream commit 56819d00bc2ebaa6308913c28680da5d896852b8 ]

The world regulatory domain is a restrictive subset of channel
configurations which allows legal operation of the adapter all over the
world. Changing to this domain should not be prevented.

Fixes: dd4a9ac05c8e1 ("mwifiex: send regulatory domain info to firmware only if alpha2 changed") changed
Signed-off-by: Stefan Kerkmann 
Reviewed-by: Jeff Chen 
Link: https://patch.msgid.link/20250804-fix-mwifiex-regulatory-domain-v1-1-e4715c770c4d@pengutronix.de
Signed-off-by: Johannes Berg 
Signed-off-by: Sasha Levin

wifi: rtlwifi: rtl8192cu: Don't claim USB ID 07b8:8188

2025-10-29T12:59:45+00:00

commit e798f2ac6040f46a04795d7de977341fa9aeabae upstream.

This ID appears to be RTL8188SU, not RTL8188CU. This is the wrong driver
for RTL8188SU. The r8712u driver from staging used to handle this ID.

Closes: https://lore.kernel.org/linux-wireless/ee0acfef-a753-4f90-87df-15f8eaa9c3a8@gmx.de/
Cc: stable@vger.kernel.org
Signed-off-by: Bitterblue Smith 
Acked-by: Ping-Ke Shih 
Signed-off-by: Ping-Ke Shih 
Link: https://patch.msgid.link/2e5e2348-bdb3-44b2-92b2-0231dbf464b0@gmail.com
Signed-off-by: Greg Kroah-Hartman

wifi: mwifiex: Initialize the chan_stats array to zero

2025-09-09T16:43:59+00:00

commit 0e20450829ca3c1dbc2db536391537c57a40fe0b upstream.

The adapter->chan_stats[] array is initialized in
mwifiex_init_channel_scan_gap() with vmalloc(), which doesn't zero out
memory.  The array is filled in mwifiex_update_chan_statistics()
and then the user can query the data in mwifiex_cfg80211_dump_survey().

There are two potential issues here.  What if the user calls
mwifiex_cfg80211_dump_survey() before the data has been filled in.
Also the mwifiex_update_chan_statistics() function doesn't necessarily
initialize the whole array.  Since the array was not initialized at
the start that could result in an information leak.

Also this array is pretty small.  It's a maximum of 900 bytes so it's
more appropriate to use kcalloc() instead vmalloc().

Cc: stable@vger.kernel.org
Fixes: bf35443314ac ("mwifiex: channel statistics support for mwifiex")
Suggested-by: Dan Carpenter 
Signed-off-by: Qianfeng Rong 
Reviewed-by: Dan Carpenter 
Link: https://patch.msgid.link/20250815023055.477719-1-rongqianfeng@vivo.com
Signed-off-by: Johannes Berg 
Signed-off-by: Greg Kroah-Hartman

wifi: libertas: cap SSID len in lbs_associate()

2025-09-09T16:43:58+00:00

[ Upstream commit c786794bd27b0d7a5fd9063695df83206009be59 ]

If the ssid_eid[1] length is more that 32 it leads to memory corruption.

Fixes: a910e4a94f69 ("cw1200: add driver for the ST-E CW1100 & CW1200 WLAN chipsets")
Signed-off-by: Dan Carpenter 
Link: https://patch.msgid.link/2a40f5ec7617144aef412034c12919a4927d90ad.1756456951.git.dan.carpenter@linaro.org
Signed-off-by: Johannes Berg 
Signed-off-by: Sasha Levin

wifi: cw1200: cap SSID length in cw1200_do_join()

2025-09-09T16:43:57+00:00

[ Upstream commit f8f15f6742b8874e59c9c715d0af3474608310ad ]

If the ssidie[1] length is more that 32 it leads to memory corruption.

Fixes: a910e4a94f69 ("cw1200: add driver for the ST-E CW1100 & CW1200 WLAN chipsets")
Signed-off-by: Dan Carpenter 
Link: https://patch.msgid.link/e91fb43fcedc4893b604dfb973131661510901a7.1756456951.git.dan.carpenter@linaro.org
Signed-off-by: Johannes Berg 
Signed-off-by: Sasha Levin

wifi: brcmsmac: Remove const from tbl_ptr parameter in wlc_lcnphy_common_read_table()

2025-08-28T14:21:31+00:00

commit 81284e86bf8849f8e98e8ead3ff5811926b2107f upstream.

A new warning in clang [1] complains that diq_start in
wlc_lcnphy_tx_iqlo_cal() is passed uninitialized as a const pointer to
wlc_lcnphy_common_read_table():

  drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c:2728:13: error: variable 'diq_start' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer]
   2728 |                                                      &diq_start, 1, 16, 69);
        |                                                       ^~~~~~~~~

The table pointer passed to wlc_lcnphy_common_read_table() should not be
considered constant, as wlc_phy_read_table() is ultimately going to
update it. Remove the const qualifier from the tbl_ptr to clear up the
warning.

Cc: stable@vger.kernel.org
Closes: https://github.com/ClangBuiltLinux/linux/issues/2108
Fixes: 5b435de0d786 ("net: wireless: add brcm80211 drivers")
Link: https://github.com/llvm/llvm-project/commit/00dacf8c22f065cb52efb14cd091d441f19b319e [1]
Signed-off-by: Nathan Chancellor 
Acked-by: Arend van Spriel >
Link: https://patch.msgid.link/20250715-brcmsmac-fix-uninit-const-pointer-v1-1-16e6a51a8ef4@kernel.org
Signed-off-by: Johannes Berg 
Signed-off-by: Greg Kroah-Hartman

wifi: iwlegacy: Check rate_idx range after addition

2025-08-28T14:21:27+00:00

[ Upstream commit 0de19d5ae0b2c5b18b88c5c7f0442f707a207409 ]

Limit rate_idx to IL_LAST_OFDM_RATE for 5GHz band for thinkable case
the index is incorrect.

Reported-by: Fedor Pchelkin 
Reported-by: Alexei Safin 
Signed-off-by: Stanislaw Gruszka 
Reviewed-by: Fedor Pchelkin 
Link: https://patch.msgid.link/20250525144524.GA172583@wp.pl
Signed-off-by: Johannes Berg 
Signed-off-by: Sasha Levin

wifi: rtlwifi: fix possible skb memory leak in `_rtl_pci_rx_interrupt()`.

2025-08-28T14:21:27+00:00

[ Upstream commit 44c0e191004f0e3aa1bdee3be248be14dbe5b020 ]

The function `_rtl_pci_init_one_rxdesc()` can fail even when the new
`skb` is passed because of a DMA mapping error.  If it fails, the `skb`
is not saved in the rx ringbuffer and thus lost.

Compile tested only

Signed-off-by: Thomas Fourier 
Acked-by: Ping-Ke Shih 
Signed-off-by: Ping-Ke Shih 
Link: https://patch.msgid.link/20250616105631.444309-4-fourier.thomas@gmail.com
Signed-off-by: Sasha Levin

wifi: iwlwifi: fw: Fix possible memory leak in iwl_fw_dbg_collect

2025-08-28T14:21:27+00:00

[ Upstream commit cc8d9cbf269dab363c768bfa9312265bc807fca5 ]

Ensure descriptor is freed on error to avoid memory leak.

Signed-off-by: Pagadala Yesu Anjaneyulu 
Signed-off-by: Miri Korenblit 
Link: https://patch.msgid.link/20250611222325.8158d15ec866.Ifa3e422c302397111f20a16da7509e6574bc19e3@changeid
Signed-off-by: Sasha Levin