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/firmware/broadcom/Kconfig | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 drivers/firmware/broadcom/Kconfig (limited to 'drivers/firmware/broadcom/Kconfig') diff --git a/drivers/firmware/broadcom/Kconfig b/drivers/firmware/broadcom/Kconfig new file mode 100644 index 000000000..8e3d355a6 --- /dev/null +++ b/drivers/firmware/broadcom/Kconfig @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0-only +config BCM47XX_NVRAM + bool "Broadcom NVRAM driver" + depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST + help + Broadcom home routers contain flash partition called "nvram" with all + important hardware configuration as well as some minor user setup. + NVRAM partition contains a text-like data representing name=value + pairs. + This driver provides an easy way to get value of requested parameter. + It simply reads content of NVRAM and parses it. It doesn't control any + hardware part itself. + +config BCM47XX_SPROM + bool "Broadcom SPROM driver" + depends on BCM47XX_NVRAM + select GENERIC_NET_UTILS + help + Broadcom devices store configuration data in SPROM. Accessing it is + specific to the bus host type, e.g. PCI(e) devices have it mapped in + a PCI BAR. + In case of SoC devices SPROM content is stored on a flash used by + bootloader firmware CFE. This driver provides method to ssb and bcma + drivers to read SPROM on SoC. + +config TEE_BNXT_FW + tristate "Broadcom BNXT firmware manager" + depends on (ARCH_BCM_IPROC && OPTEE) || (COMPILE_TEST && TEE) + default ARCH_BCM_IPROC + help + This module help to manage firmware on Broadcom BNXT device. The module + registers on tee bus and invoke calls to manage firmware on BNXT device. -- cgit v1.3.1