From ff917923f4fb9c83717ba135ee47d7e4c1567bb7 Mon Sep 17 00:00:00 2001
From: Muhammad Bilal <meatuni001@gmail.com>
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 <meatuni001@gmail.com>
Link: https://patch.msgid.link/20260728125456.32359-3-meatuni001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/soc/Kconfig | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 drivers/soc/Kconfig

(limited to 'drivers/soc/Kconfig')

diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
new file mode 100644
index 000000000..a2d65adff
--- /dev/null
+++ b/drivers/soc/Kconfig
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menu "SOC (System On Chip) specific Drivers"
+
+source "drivers/soc/amlogic/Kconfig"
+source "drivers/soc/apple/Kconfig"
+source "drivers/soc/aspeed/Kconfig"
+source "drivers/soc/atmel/Kconfig"
+source "drivers/soc/bcm/Kconfig"
+source "drivers/soc/canaan/Kconfig"
+source "drivers/soc/cirrus/Kconfig"
+source "drivers/soc/fsl/Kconfig"
+source "drivers/soc/fujitsu/Kconfig"
+source "drivers/soc/hisilicon/Kconfig"
+source "drivers/soc/imx/Kconfig"
+source "drivers/soc/ixp4xx/Kconfig"
+source "drivers/soc/litex/Kconfig"
+source "drivers/soc/loongson/Kconfig"
+source "drivers/soc/mediatek/Kconfig"
+source "drivers/soc/microchip/Kconfig"
+source "drivers/soc/nuvoton/Kconfig"
+source "drivers/soc/pxa/Kconfig"
+source "drivers/soc/qcom/Kconfig"
+source "drivers/soc/renesas/Kconfig"
+source "drivers/soc/rockchip/Kconfig"
+source "drivers/soc/samsung/Kconfig"
+source "drivers/soc/sophgo/Kconfig"
+source "drivers/soc/sunxi/Kconfig"
+source "drivers/soc/tegra/Kconfig"
+source "drivers/soc/ti/Kconfig"
+source "drivers/soc/ux500/Kconfig"
+source "drivers/soc/versatile/Kconfig"
+source "drivers/soc/vt8500/Kconfig"
+source "drivers/soc/xilinx/Kconfig"
+
+endmenu
-- 
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