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/video/fbdev/mmp/Kconfig | 12 + drivers/video/fbdev/mmp/Makefile | 4 + drivers/video/fbdev/mmp/core.c | 239 ++++ drivers/video/fbdev/mmp/fb/Kconfig | 8 + drivers/video/fbdev/mmp/fb/Makefile | 2 + drivers/video/fbdev/mmp/fb/mmpfb.c | 661 ++++++++++ drivers/video/fbdev/mmp/fb/mmpfb.h | 41 + drivers/video/fbdev/mmp/hw/Kconfig | 17 + drivers/video/fbdev/mmp/hw/Makefile | 3 + drivers/video/fbdev/mmp/hw/mmp_ctrl.c | 575 +++++++++ drivers/video/fbdev/mmp/hw/mmp_ctrl.h | 1456 +++++++++++++++++++++++ drivers/video/fbdev/mmp/hw/mmp_spi.c | 167 +++ drivers/video/fbdev/mmp/panel/Kconfig | 6 + drivers/video/fbdev/mmp/panel/Makefile | 2 + drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c | 172 +++ 15 files changed, 3365 insertions(+) create mode 100644 drivers/video/fbdev/mmp/Kconfig create mode 100644 drivers/video/fbdev/mmp/Makefile create mode 100644 drivers/video/fbdev/mmp/core.c create mode 100644 drivers/video/fbdev/mmp/fb/Kconfig create mode 100644 drivers/video/fbdev/mmp/fb/Makefile create mode 100644 drivers/video/fbdev/mmp/fb/mmpfb.c create mode 100644 drivers/video/fbdev/mmp/fb/mmpfb.h create mode 100644 drivers/video/fbdev/mmp/hw/Kconfig create mode 100644 drivers/video/fbdev/mmp/hw/Makefile create mode 100644 drivers/video/fbdev/mmp/hw/mmp_ctrl.c create mode 100644 drivers/video/fbdev/mmp/hw/mmp_ctrl.h create mode 100644 drivers/video/fbdev/mmp/hw/mmp_spi.c create mode 100644 drivers/video/fbdev/mmp/panel/Kconfig create mode 100644 drivers/video/fbdev/mmp/panel/Makefile create mode 100644 drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c (limited to 'drivers/video/fbdev/mmp') diff --git a/drivers/video/fbdev/mmp/Kconfig b/drivers/video/fbdev/mmp/Kconfig new file mode 100644 index 000000000..5c6cc97c9 --- /dev/null +++ b/drivers/video/fbdev/mmp/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig MMP_DISP + tristate "Marvell MMP Display Subsystem support" + depends on CPU_PXA910 || CPU_MMP2 || COMPILE_TEST + help + Marvell Display Subsystem support. + +if MMP_DISP +source "drivers/video/fbdev/mmp/hw/Kconfig" +source "drivers/video/fbdev/mmp/panel/Kconfig" +source "drivers/video/fbdev/mmp/fb/Kconfig" +endif diff --git a/drivers/video/fbdev/mmp/Makefile b/drivers/video/fbdev/mmp/Makefile new file mode 100644 index 000000000..84204c04e --- /dev/null +++ b/drivers/video/fbdev/mmp/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_MMP_DISP) += mmp_disp.o hw/ panel/ fb/ + +mmp_disp-y += core.o diff --git a/drivers/video/fbdev/mmp/core.c b/drivers/video/fbdev/mmp/core.c new file mode 100644 index 000000000..3c35b0a3e --- /dev/null +++ b/drivers/video/fbdev/mmp/core.c @@ -0,0 +1,239 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * linux/drivers/video/mmp/common.c + * This driver is a common framework for Marvell Display Controller + * + * Copyright (C) 2012 Marvell Technology Group Ltd. + * Authors: Zhou Zhu + */ + +#include +#include +#include +#include +#include