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, 27 insertions, 0 deletions

diff --git a/drivers/pinctrl/intel/Makefile b/drivers/pinctrl/intel/Makefile
new file mode 100644
index 000000000..d0d868c9a
--- /dev/null
+++ b/drivers/pinctrl/intel/Makefile
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0
+# Intel pin control drivers
+
+obj-$(CONFIG_PINCTRL_BAYTRAIL)		+= pinctrl-baytrail.o
+obj-$(CONFIG_PINCTRL_CHERRYVIEW)	+= pinctrl-cherryview.o
+obj-$(CONFIG_PINCTRL_LYNXPOINT)		+= pinctrl-lynxpoint.o
+obj-$(CONFIG_PINCTRL_TANGIER)		+= pinctrl-tangier.o
+obj-$(CONFIG_PINCTRL_MERRIFIELD)	+= pinctrl-merrifield.o
+obj-$(CONFIG_PINCTRL_MOOREFIELD)	+= pinctrl-moorefield.o
+obj-$(CONFIG_PINCTRL_INTEL)		+= pinctrl-intel.o
+obj-$(CONFIG_PINCTRL_INTEL_PLATFORM)	+= pinctrl-intel-platform.o
+obj-$(CONFIG_PINCTRL_ALDERLAKE)		+= pinctrl-alderlake.o
+obj-$(CONFIG_PINCTRL_BROXTON)		+= pinctrl-broxton.o
+obj-$(CONFIG_PINCTRL_CANNONLAKE)	+= pinctrl-cannonlake.o
+obj-$(CONFIG_PINCTRL_CEDARFORK)		+= pinctrl-cedarfork.o
+obj-$(CONFIG_PINCTRL_DENVERTON)		+= pinctrl-denverton.o
+obj-$(CONFIG_PINCTRL_ELKHARTLAKE)	+= pinctrl-elkhartlake.o
+obj-$(CONFIG_PINCTRL_EMMITSBURG)	+= pinctrl-emmitsburg.o
+obj-$(CONFIG_PINCTRL_GEMINILAKE)	+= pinctrl-geminilake.o
+obj-$(CONFIG_PINCTRL_ICELAKE)		+= pinctrl-icelake.o
+obj-$(CONFIG_PINCTRL_JASPERLAKE)	+= pinctrl-jasperlake.o
+obj-$(CONFIG_PINCTRL_LAKEFIELD)		+= pinctrl-lakefield.o
+obj-$(CONFIG_PINCTRL_LEWISBURG)		+= pinctrl-lewisburg.o
+obj-$(CONFIG_PINCTRL_METEORLAKE)	+= pinctrl-meteorlake.o
+obj-$(CONFIG_PINCTRL_METEORPOINT)	+= pinctrl-meteorpoint.o
+obj-$(CONFIG_PINCTRL_SUNRISEPOINT)	+= pinctrl-sunrisepoint.o
+obj-$(CONFIG_PINCTRL_TIGERLAKE)		+= pinctrl-tigerlake.o