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/mac80211/Makefile | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 net/mac80211/Makefile (limited to 'net/mac80211/Makefile') diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile new file mode 100644 index 000000000..36f1e3e22 --- /dev/null +++ b/net/mac80211/Makefile @@ -0,0 +1,71 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_MAC80211) += mac80211.o + +# mac80211 objects +mac80211-y := \ + main.o status.o \ + driver-ops.o \ + sta_info.o \ + wep.o \ + aead_api.o \ + wpa.o \ + scan.o offchannel.o \ + ht.o agg-tx.o agg-rx.o \ + vht.o \ + he.o \ + s1g.o \ + ibss.o \ + iface.o \ + link.o \ + rate.o \ + tkip.o \ + aes_cmac.o \ + aes_gmac.o \ + fils_aead.o \ + cfg.o \ + ethtool.o \ + rx.o \ + spectmgmt.o \ + tx.o \ + key.o \ + util.o parse.o \ + wme.o \ + chan.o ap.o \ + trace.o mlme.o \ + tdls.o \ + ocb.o \ + airtime.o \ + eht.o uhr.o nan.o + +mac80211-$(CONFIG_MAC80211_LEDS) += led.o +mac80211-$(CONFIG_MAC80211_DEBUGFS) += \ + debugfs.o \ + debugfs_sta.o \ + debugfs_netdev.o \ + debugfs_key.o + +mac80211-$(CONFIG_MAC80211_MESH) += \ + mesh.o \ + mesh_pathtbl.o \ + mesh_plink.o \ + mesh_hwmp.o \ + mesh_sync.o \ + mesh_ps.o + +mac80211-$(CONFIG_PM) += pm.o + +CFLAGS_trace.o := -I$(src) + +rc80211_minstrel-y := \ + rc80211_minstrel_ht.o + +rc80211_minstrel-$(CONFIG_MAC80211_DEBUGFS) += \ + rc80211_minstrel_ht_debugfs.o + +mac80211-$(CONFIG_MAC80211_RC_MINSTREL) += $(rc80211_minstrel-y) + +obj-y += tests/ + +mac80211-y += wbrf.o + +ccflags-y += -DDEBUG -- cgit v1.3.1