staging: rtl8723bs: fix OOB read in rtw_action_frame_parse()grafted

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>

1 files changed, 56 insertions, 0 deletions

diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
new file mode 100644
index 000000000..d7aa516bc
--- /dev/null
+++ b/drivers/phy/Makefile
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the phy drivers.
+#
+
+obj-$(CONFIG_PHY_COMMON_PROPS)		+= phy-common-props.o
+obj-$(CONFIG_PHY_COMMON_PROPS_TEST)	+= phy-common-props-test.o
+obj-$(CONFIG_GENERIC_PHY)		+= phy-core.o
+obj-$(CONFIG_GENERIC_PHY_MIPI_DPHY)	+= phy-core-mipi-dphy.o
+obj-$(CONFIG_PHY_AIROHA_PCIE)		+= phy-airoha-pcie.o
+obj-$(CONFIG_PHY_CAN_TRANSCEIVER)	+= phy-can-transceiver.o
+obj-$(CONFIG_PHY_ECONET_PCIE)		+= phy-econet-pcie.o
+obj-$(CONFIG_PHY_EYEQ5_ETH)		+= phy-eyeq5-eth.o
+obj-$(CONFIG_PHY_GOOGLE_USB)		+= phy-google-usb.o
+obj-$(CONFIG_USB_LGM_PHY)		+= phy-lgm-usb.o
+obj-$(CONFIG_PHY_LPC18XX_USB_OTG)	+= phy-lpc18xx-usb-otg.o
+obj-$(CONFIG_PHY_NXP_PTN3222)		+= phy-nxp-ptn3222.o
+obj-$(CONFIG_PHY_NXP_TJA1145)		+= phy-nxp-tja1145.o
+obj-$(CONFIG_PHY_PISTACHIO_USB)		+= phy-pistachio-usb.o
+obj-$(CONFIG_PHY_SNPS_EUSB2)		+= phy-snps-eusb2.o
+obj-$(CONFIG_PHY_XGENE)			+= phy-xgene.o
+
+obj-$(CONFIG_GENERIC_PHY)		+= allwinner/	\
+					   amlogic/	\
+					   apple/	\
+					   axiado/	\
+					   broadcom/	\
+					   cadence/	\
+					   canaan/	\
+					   eswin/	\
+					   freescale/	\
+					   hisilicon/	\
+					   ingenic/	\
+					   intel/	\
+					   lantiq/	\
+					   marvell/	\
+					   mediatek/	\
+					   microchip/	\
+					   motorola/	\
+					   mscc/	\
+					   nuvoton/	\
+					   qualcomm/	\
+					   ralink/	\
+					   realtek/	\
+					   renesas/	\
+					   rockchip/	\
+					   samsung/	\
+					   socionext/	\
+					   sophgo/	\
+					   spacemit/	\
+					   st/		\
+					   starfive/	\
+					   sunplus/	\
+					   tegra/	\
+					   ti/		\
+					   xilinx/