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, 32 insertions, 0 deletions

diff --git a/sound/hda/codecs/Makefile b/sound/hda/codecs/Makefile
new file mode 100644
index 000000000..88d2f8a79
--- /dev/null
+++ b/sound/hda/codecs/Makefile
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: GPL-2.0
+subdir-ccflags-y += -I$(src)/../common
+
+snd-hda-codec-generic-y :=	generic.o
+snd-hda-codec-cmedia-y :=	cmedia.o
+snd-hda-codec-cm9825-y :=	cm9825.o
+snd-hda-codec-analog-y :=	analog.o
+snd-hda-codec-ca0110-y :=	ca0110.o
+snd-hda-codec-ca0132-y :=	ca0132.o
+snd-hda-codec-conexant-y :=	conexant.o
+snd-hda-codec-idt-y :=		sigmatel.o
+snd-hda-codec-senarytech-y :=	senarytech.o
+snd-hda-codec-si3054-y :=	si3054.o
+snd-hda-codec-via-y :=		via.o
+
+obj-y += cirrus/
+obj-y += hdmi/
+obj-y += realtek/
+obj-y += side-codecs/
+
+# codec drivers
+obj-$(CONFIG_SND_HDA_GENERIC) += snd-hda-codec-generic.o
+obj-$(CONFIG_SND_HDA_CODEC_CMEDIA) += snd-hda-codec-cmedia.o
+obj-$(CONFIG_SND_HDA_CODEC_CM9825) += snd-hda-codec-cm9825.o
+obj-$(CONFIG_SND_HDA_CODEC_ANALOG) += snd-hda-codec-analog.o
+obj-$(CONFIG_SND_HDA_CODEC_CA0110) += snd-hda-codec-ca0110.o
+obj-$(CONFIG_SND_HDA_CODEC_CA0132) += snd-hda-codec-ca0132.o
+obj-$(CONFIG_SND_HDA_CODEC_CONEXANT) += snd-hda-codec-conexant.o
+obj-$(CONFIG_SND_HDA_CODEC_SIGMATEL) += snd-hda-codec-idt.o
+obj-$(CONFIG_SND_HDA_CODEC_SENARYTECH) += snd-hda-codec-senarytech.o
+obj-$(CONFIG_SND_HDA_CODEC_SI3054) += snd-hda-codec-si3054.o
+obj-$(CONFIG_SND_HDA_CODEC_VIA) += snd-hda-codec-via.o