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/media/Makefile | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 drivers/media/Makefile (limited to 'drivers/media/Makefile') diff --git a/drivers/media/Makefile b/drivers/media/Makefile new file mode 100644 index 000000000..20fac24e4 --- /dev/null +++ b/drivers/media/Makefile @@ -0,0 +1,34 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the kernel multimedia device drivers. +# + +# +# I2C drivers should come before other drivers, otherwise they'll fail +# when compiled as builtin drivers +# +obj-y += i2c/ tuners/ +obj-$(CONFIG_DVB_CORE) += dvb-frontends/ + +# +# Now, let's link-in the media controller core +# +ifeq ($(CONFIG_MEDIA_CONTROLLER),y) + obj-$(CONFIG_MEDIA_SUPPORT) += mc/ +endif + +obj-$(CONFIG_VIDEO_DEV) += v4l2-core/ +obj-$(CONFIG_DVB_CORE) += dvb-core/ + +# There are both core and drivers at RC subtree - merge before drivers +obj-y += rc/ + +obj-$(CONFIG_CEC_CORE) += cec/ + +# +# Finally, merge the drivers that require the core +# + +obj-y += common/ platform/ pci/ usb/ mmc/ firewire/ spi/ test-drivers/ +obj-$(CONFIG_VIDEO_DEV) += radio/ + -- cgit v1.3.1