From ff917923f4fb9c83717ba135ee47d7e4c1567bb7 Mon Sep 17 00:00:00 2001 From: Muhammad Bilal Date: Tue, 28 Jul 2026 17:54:55 +0500 Subject: staging: rtl8723bs: fix OOB read in rtw_action_frame_parse() rtw_action_frame_parse() takes a frame_len parameter but never actually checks it before indexing into the frame body: const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr); ... c = frame_body[0]; ... a = frame_body[1]; frame_body already points 24 bytes (sizeof(struct ieee80211_hdr_3addr)) into frame, so reading frame_body[0] and frame_body[1] requires frame_len >= 26. A management action frame shorter than that (e.g. exactly 24 bytes, the minimum a malicious peer can send) causes a 1-2 byte out-of-bounds read. This is reachable from rtw_cfg80211_monitor_if_xmit_entry() and cfg80211_rtw_mgmt_tx() in ioctl_cfg80211.c, both of which pass attacker/user-influenced frame buffers and lengths straight through. Add the missing length check before frame_body is dereferenced. Fixes: 554c0a3abf216 ("staging: Add rtl8723bs sdio wifi driver") Cc: stable@vger.kernel.org Signed-off-by: Muhammad Bilal Link: https://patch.msgid.link/20260728125456.32359-3-meatuni001@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/net/pse-pd/Kconfig | 83 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 drivers/net/pse-pd/Kconfig (limited to 'drivers/net/pse-pd/Kconfig') diff --git a/drivers/net/pse-pd/Kconfig b/drivers/net/pse-pd/Kconfig new file mode 100644 index 000000000..a0f2ae668 --- /dev/null +++ b/drivers/net/pse-pd/Kconfig @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Ethernet Power Sourcing Equipment drivers +# + +menuconfig PSE_CONTROLLER + bool "Ethernet Power Sourcing Equipment Support" + depends on REGULATOR + help + Generic Power Sourcing Equipment Controller support. + + If unsure, say no. + +if PSE_CONTROLLER + +config PSE_REALTEK_MCU + tristate + help + Shared core for the Realtek PSE MCU driver. This is selected + automatically by the transport options below. + +config PSE_REALTEK_MCU_I2C + tristate "Realtek PSE MCU driver (I2C transport)" + depends on I2C + select PSE_REALTEK_MCU + help + Driver for the microcontroller (MCU) that fronts the PSE + hardware on various Realtek-based managed switches, attached + via I2C/SMBus. The MCU exposes a message-based protocol; the actual + PSE silicon is not accessed directly. To compile this driver as a + module, choose M here: the module will be called realtek-pse-mcu-i2c. + +config PSE_REALTEK_MCU_UART + tristate "Realtek PSE MCU driver (UART transport)" + depends on SERIAL_DEV_BUS + select PSE_REALTEK_MCU + help + Driver for the microcontroller (MCU) that fronts the PSE + hardware on various Realtek-based managed switches, attached + via UART. The MCU exposes a message-based protocol; the actual PSE + silicon is not accessed directly. To compile this driver as a + module, choose M here: the module will be called realtek-pse-mcu-uart. + +config PSE_REGULATOR + tristate "Regulator based PSE controller" + help + This module provides support for simple regulator based Ethernet Power + Sourcing Equipment without automatic classification support. For + example for basic implementation of PoDL (802.3bu) specification. + +config PSE_PD692X0 + tristate "PD692X0 PSE controller" + depends on I2C + select FW_LOADER + select FW_UPLOAD + help + This module provides support for PD692x0 regulator based Ethernet + Power Sourcing Equipment. + + To compile this driver as a module, choose M here: the + module will be called pd692x0. + +config PSE_SI3474 + tristate "Si3474 PSE controller" + depends on I2C + help + This module provides support for Si3474 regulator based Ethernet + Power Sourcing Equipment. + Only 4-pair PSE configurations are supported. + + To compile this driver as a module, choose M here: the + module will be called si3474. + +config PSE_TPS23881 + tristate "TPS23881 PSE controller" + depends on I2C + help + This module provides support for TPS23881 regulator based Ethernet + Power Sourcing Equipment. + + To compile this driver as a module, choose M here: the + module will be called tps23881. +endif -- cgit v1.3.1