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/net/team/Kconfig | 77 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 drivers/net/team/Kconfig (limited to 'drivers/net/team/Kconfig') diff --git a/drivers/net/team/Kconfig b/drivers/net/team/Kconfig new file mode 100644 index 000000000..4d449845d --- /dev/null +++ b/drivers/net/team/Kconfig @@ -0,0 +1,77 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig NET_TEAM + tristate "Ethernet team driver support" + help + This allows one to create virtual interfaces that teams together + multiple ethernet devices. + + Team devices can be added using the "ip" command from the + iproute2 package: + + "ip link add link [ address MAC ] [ NAME ] type team" + + To compile this driver as a module, choose M here: the module + will be called team. + +if NET_TEAM + +config NET_TEAM_MODE_BROADCAST + tristate "Broadcast mode support" + depends on NET_TEAM + help + Basic mode where packets are transmitted always by all suitable ports. + + All added ports are setup to have team's device address. + + To compile this team mode as a module, choose M here: the module + will be called team_mode_broadcast. + +config NET_TEAM_MODE_ROUNDROBIN + tristate "Round-robin mode support" + depends on NET_TEAM + help + Basic mode where port used for transmitting packets is selected in + round-robin fashion using packet counter. + + All added ports are setup to have team's device address. + + To compile this team mode as a module, choose M here: the module + will be called team_mode_roundrobin. + +config NET_TEAM_MODE_RANDOM + tristate "Random mode support" + depends on NET_TEAM + help + Basic mode where port used for transmitting packets is selected + randomly. + + All added ports are setup to have team's device address. + + To compile this team mode as a module, choose M here: the module + will be called team_mode_random. + +config NET_TEAM_MODE_ACTIVEBACKUP + tristate "Active-backup mode support" + depends on NET_TEAM + help + Only one port is active at a time and the rest of ports are used + for backup. + + Mac addresses of ports are not modified. Userspace is responsible + to do so. + + To compile this team mode as a module, choose M here: the module + will be called team_mode_activebackup. + +config NET_TEAM_MODE_LOADBALANCE + tristate "Load-balance mode support" + depends on NET_TEAM + help + This mode provides load balancing functionality. Tx port selection + is done using BPF function set up from userspace (bpf_hash_func + option) + + To compile this team mode as a module, choose M here: the module + will be called team_mode_loadbalance. + +endif # NET_TEAM -- cgit v1.3.1