From ff917923f4fb9c83717ba135ee47d7e4c1567bb7 Mon Sep 17 00:00:00 2001 From: Muhammad Bilal 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 Link: https://patch.msgid.link/20260728125456.32359-3-meatuni001@gmail.com Signed-off-by: Greg Kroah-Hartman --- net/rfkill/Kconfig | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 net/rfkill/Kconfig (limited to 'net/rfkill/Kconfig') diff --git a/net/rfkill/Kconfig b/net/rfkill/Kconfig new file mode 100644 index 000000000..83a7af898 --- /dev/null +++ b/net/rfkill/Kconfig @@ -0,0 +1,34 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# RF switch subsystem configuration +# +menuconfig RFKILL + tristate "RF switch subsystem support" + help + Say Y here if you want to have control over RF switches + found on many WiFi and Bluetooth cards. + + To compile this driver as a module, choose M here: the + module will be called rfkill. + +# LED trigger support +config RFKILL_LEDS + bool + depends on RFKILL + depends on LEDS_TRIGGERS = y || RFKILL = LEDS_TRIGGERS + default y + +config RFKILL_INPUT + bool "RF switch input support" if EXPERT + depends on RFKILL + depends on INPUT = y || RFKILL = INPUT + default y if !EXPERT + +config RFKILL_GPIO + tristate "GPIO RFKILL driver" + depends on RFKILL + depends on GPIOLIB || COMPILE_TEST + default n + help + If you say yes here you get support of a generic gpio RFKILL + driver. -- cgit v1.3.1