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 --- drivers/base/regmap/Kconfig | 93 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 drivers/base/regmap/Kconfig (limited to 'drivers/base/regmap/Kconfig') diff --git a/drivers/base/regmap/Kconfig b/drivers/base/regmap/Kconfig new file mode 100644 index 000000000..3c76a5bf6 --- /dev/null +++ b/drivers/base/regmap/Kconfig @@ -0,0 +1,93 @@ +# SPDX-License-Identifier: GPL-2.0 +# Generic register map support. There are no user servicable options here, +# this is an API intended to be used by other kernel subsystems. These +# subsystems should select the appropriate symbols. + +config REGMAP + bool + default y if (REGMAP_I2C || REGMAP_SLIMBUS || REGMAP_SPI || REGMAP_SPMI || REGMAP_W1 || REGMAP_AC97 || REGMAP_MMIO || REGMAP_IRQ || REGMAP_SOUNDWIRE || REGMAP_SOUNDWIRE_MBQ || REGMAP_SCCB || REGMAP_I3C || REGMAP_SPI_AVMM || REGMAP_MDIO || REGMAP_FSI) + help + Enable support for the Register Map (regmap) access API. + + Usually, this option is automatically selected when needed. + However, you may want to enable it manually for running the regmap + KUnit tests. + + If unsure, say N. + +config REGMAP_KUNIT + tristate "KUnit tests for regmap" + depends on KUNIT && REGMAP + default KUNIT_ALL_TESTS + select REGMAP_RAM + +config REGMAP_BUILD + bool "Enable regmap build" + depends on KUNIT + select REGMAP + help + This option exists purely to allow the regmap KUnit tests to + be enabled without having to enable some driver that uses + regmap due to unfortunate issues with how KUnit tests are + normally enabled. + +config REGMAP_AC97 + tristate + +config REGMAP_I2C + tristate + depends on I2C + +config REGMAP_SLIMBUS + tristate + depends on SLIMBUS + +config REGMAP_SPI + tristate + depends on SPI + +config REGMAP_SPMI + tristate + depends on SPMI + +config REGMAP_W1 + tristate + depends on W1 + +config REGMAP_MDIO + tristate + depends on PHYLIB + +config REGMAP_MMIO + tristate + +config REGMAP_IRQ + bool + select IRQ_DOMAIN + +config REGMAP_RAM + tristate + +config REGMAP_SOUNDWIRE + tristate + depends on SOUNDWIRE + +config REGMAP_SOUNDWIRE_MBQ + tristate + depends on SOUNDWIRE + +config REGMAP_SCCB + tristate + depends on I2C + +config REGMAP_I3C + tristate + depends on I3C + +config REGMAP_SPI_AVMM + tristate + depends on SPI + +config REGMAP_FSI + tristate + depends on FSI -- cgit v1.3.1