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/netdevsim/Makefile | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 drivers/net/netdevsim/Makefile (limited to 'drivers/net/netdevsim/Makefile') diff --git a/drivers/net/netdevsim/Makefile b/drivers/net/netdevsim/Makefile new file mode 100644 index 000000000..87718204f --- /dev/null +++ b/drivers/net/netdevsim/Makefile @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_NETDEVSIM) += netdevsim.o + +netdevsim-objs := \ + netdev.o dev.o ethtool.o fib.o bus.o health.o hwstats.o udp_tunnels.o tc.o + +ifeq ($(CONFIG_BPF_SYSCALL),y) +netdevsim-objs += \ + bpf.o +endif + +ifneq ($(CONFIG_XFRM_OFFLOAD),) +netdevsim-objs += ipsec.o +endif + +ifneq ($(CONFIG_PSAMPLE),) +netdevsim-objs += psample.o +endif + +ifneq ($(CONFIG_INET_PSP),) +netdevsim-objs += psp.o +endif + +ifneq ($(CONFIG_MACSEC),) +netdevsim-objs += macsec.o +endif -- cgit v1.3.1