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, 19 insertions, 0 deletions

diff --git a/drivers/clk/bcm/Makefile b/drivers/clk/bcm/Makefile
new file mode 100644
index 000000000..d0b6f4b1f
--- /dev/null
+++ b/drivers/clk/bcm/Makefile
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_CLK_BCM_63XX)	+= clk-bcm63xx.o
+obj-$(CONFIG_CLK_BCM_63XX_GATE)	+= clk-bcm63xx-gate.o
+obj-$(CONFIG_CLK_BCM63268_TIMER) += clk-bcm63268-timer.o
+obj-$(CONFIG_CLK_BCM_KONA)	+= clk-kona.o
+obj-$(CONFIG_CLK_BCM_KONA)	+= clk-kona-setup.o
+obj-$(CONFIG_CLK_BCM_KONA)	+= clk-bcm281xx.o
+obj-$(CONFIG_CLK_BCM_KONA)	+= clk-bcm21664.o
+obj-$(CONFIG_COMMON_CLK_IPROC)	+= clk-iproc-armpll.o clk-iproc-pll.o clk-iproc-asiu.o
+obj-$(CONFIG_CLK_BCM2711_DVP)	+= clk-bcm2711-dvp.o
+obj-$(CONFIG_CLK_BCM2835)	+= clk-bcm2835.o
+obj-$(CONFIG_CLK_BCM2835)	+= clk-bcm2835-aux.o
+obj-$(CONFIG_CLK_RASPBERRYPI)	+= clk-raspberrypi.o
+obj-$(CONFIG_ARCH_BCM_53573)	+= clk-bcm53573-ilp.o
+obj-$(CONFIG_CLK_BCM_CYGNUS)	+= clk-cygnus.o
+obj-$(CONFIG_CLK_BCM_HR2)	+= clk-hr2.o
+obj-$(CONFIG_CLK_BCM_NSP)	+= clk-nsp.o
+obj-$(CONFIG_CLK_BCM_NS2)	+= clk-ns2.o
+obj-$(CONFIG_CLK_BCM_SR)	+= clk-sr.o