kernel/linux.git/drivers/net/wireless/mediatek, branch v6.6.132

wifi: mt76: Fix possible oob access in mt76_connac2_mac_write_txwi_80211()

2026-03-25T10:05:40+00:00

[ Upstream commit 4e10a730d1b511ff49723371ed6d694dd1b2c785 ] Check frame length before accessing the mgmt fields in mt76_connac2_mac_write_txwi_80211 in order to avoid a possible oob access. Fixes: 577dbc6c656d ("mt76: mt7915: enable offloading of sequence number assignment") Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20260226-mt76-addba-req-oob-access-v1-3-b0f6d1ad4850@kernel.org [fix check to also cover mgmt->u.action.u.addba_req.capab, correct Fixes tag] Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

wifi: mt76: mt7996: Fix possible oob access in mt7996_mac_write_txwi_80211()

2026-03-25T10:05:40+00:00

[ Upstream commit 60862846308627e9e15546bb647a00de44deb27b ] Check frame length before accessing the mgmt fields in mt7996_mac_write_txwi_80211 in order to avoid a possible oob access. Fixes: 98686cd21624c ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20260226-mt76-addba-req-oob-access-v1-1-b0f6d1ad4850@kernel.org Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

wifi: mt76: Fix DTS power-limits on little endian systems

2026-01-11T14:22:21+00:00

[ Upstream commit 38b845e1f9e810869b0a0b69f202b877b7b7fb12 ] The power-limits for ru and mcs and stored in the devicetree as bytewise array (often with sizes which are not a multiple of 4). These arrays have a prefix which defines for how many modes a line is applied. This prefix is also only a byte - but the code still tried to fix the endianness of this byte with a be32 operation. As result, loading was mostly failing or was sending completely unexpected values to the firmware. Since the other rates are also stored in the devicetree as bytewise arrays, just drop the u32 access + be32_to_cpu conversion and directly access them as bytes arrays. Cc: stable@vger.kernel.org Fixes: 22b980badc0f ("mt76: add functions for parsing rate power limits from DT") Fixes: a9627d992b5e ("mt76: extend DT rate power limits to support 11ax devices") Signed-off-by: Sven Eckelmann (Plasma Cloud) Signed-off-by: Felix Fietkau [ Adjust context ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

mt76: mt7615: Fix memory leak in mt7615_mcu_wtbl_sta_add()

2026-01-11T14:21:29+00:00

[ Upstream commit 53d1548612670aa8b5d89745116cc33d9d172863 ] In mt7615_mcu_wtbl_sta_add(), an skb sskb is allocated. If the subsequent call to mt76_connac_mcu_alloc_wtbl_req() fails, the function returns an error without freeing sskb, leading to a memory leak. Fix this by calling dev_kfree_skb() on sskb in the error handling path to ensure it is properly released. Fixes: 99c457d902cf9 ("mt76: mt7615: move mt7615_mcu_set_bmc to mt7615_mcu_ops") Signed-off-by: Zilin Guan Acked-by: Lorenzo Bianconi Link: https://patch.msgid.link/20251113062415.103611-1-zilin@seu.edu.cn Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin

wifi: mt76: mt7996: Temporarily disable EPCS

2025-11-24T09:29:38+00:00

[ Upstream commit e6291bb7a5935b2f1d337fd7a58eab7ada6678ad ] EPCS is not yet ready, so do not claim to support it. Signed-off-by: Benjamin Lin Co-developed-by: Lorenzo Bianconi Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20250904-mt7996-mlo-more-fixes-v1-4-89d8fed67f20@kernel.org Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin

wifi: mt76: mt7921: Add 160MHz beamformee capability for mt7922 device

2025-11-24T09:29:38+00:00

[ Upstream commit 25ef5b5d02ac03fe8dd91cf25bd011a570fbeba2 ] Enable 160MHz beamformee support on mt7922 by updating HE capability element configuration. Previously, only 160MHz channel width was set, but beamformee for 160MHz was not properly advertised. This patch adds BEAMFORMEE_MAX_STS_ABOVE_80MHZ_4 capability to allow devices to utilize 160MHz BW for beamforming. Tested by connecting to 160MHz-bandwidth beamforming AP and verified HE capability. Signed-off-by: Quan Zhou Link: https://patch.msgid.link/ae637afaffed387018fdc43709470ef65898ff0b.1756383627.git.quan.zhou@mediatek.com Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin

wifi: mt76: mt7921u: Add VID/PID for Netgear A7500

2025-10-19T14:30:55+00:00

commit fc6627ca8a5f811b601aea74e934cf8a048c88ac upstream. Add VID/PID 0846/9065 for Netgear A7500. Reported-by: Autumn Dececco Tested-by: Autumn Dececco Signed-off-by: Nick Morrow Cc: stable@vger.kernel.org Acked-by: Lorenzo Bianconi Link: https://patch.msgid.link/80bacfd6-6073-4ce5-be32-ae9580832337@gmail.com Signed-off-by: Felix Fietkau Signed-off-by: Greg Kroah-Hartman

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

2025-10-15T09:58:01+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: mt76: mt7996: Initialize hdr before passing to skb_put_data()

2025-09-09T16:56:27+00:00

commit 87b07a1fbc6b5c23d3b3584ab4288bc9106d3274 upstream. A new warning in clang [1] points out a couple of places where a hdr variable is not initialized then passed along to skb_put_data(). drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:1894:21: warning: variable 'hdr' is uninitialized when passed as a const pointer argument here [-Wuninitialized-const-pointer] 1894 | skb_put_data(skb, &hdr, sizeof(hdr)); | ^~~ drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:3386:21: warning: variable 'hdr' is uninitialized when passed as a const pointer argument here [-Wuninitialized-const-pointer] 3386 | skb_put_data(skb, &hdr, sizeof(hdr)); | ^~~ Zero initialize these headers as done in other places in the driver when there is nothing stored in the header. Cc: stable@vger.kernel.org Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Link: https://github.com/llvm/llvm-project/commit/00dacf8c22f065cb52efb14cd091d441f19b319e [1] Closes: https://github.com/ClangBuiltLinux/linux/issues/2104 Signed-off-by: Nathan Chancellor Link: https://patch.msgid.link/20250715-mt7996-fix-uninit-const-pointer-v1-1-b5d8d11d7b78@kernel.org Signed-off-by: Felix Fietkau Signed-off-by: Greg Kroah-Hartman

wifi: mt76: mt7915: mcu: re-init MCU before loading FW patch

2025-08-28T14:28:22+00:00

[ Upstream commit ac9c50c79eaef5fca0f165e45d0c5880606db53e ] Restart the MCU and release the patch semaphore before loading the MCU patch firmware from the host. This fixes failures upon error recovery in case the semaphore was previously taken and never released by the host. This happens from time to time upon triggering a full-chip error recovery. Under this circumstance, the hardware restart fails and the radio is rendered inoperational. Signed-off-by: David Bauer Link: https://patch.msgid.link/20250402004528.1036715-3-mail@david-bauer.net Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin