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/sunrpc/Makefile | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 net/sunrpc/Makefile (limited to 'net/sunrpc/Makefile') diff --git a/net/sunrpc/Makefile b/net/sunrpc/Makefile new file mode 100644 index 000000000..96727df3a --- /dev/null +++ b/net/sunrpc/Makefile @@ -0,0 +1,21 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for Linux kernel SUN RPC +# + + +obj-$(CONFIG_SUNRPC) += sunrpc.o +obj-$(CONFIG_SUNRPC_GSS) += auth_gss/ +obj-$(CONFIG_SUNRPC_XPRT_RDMA) += xprtrdma/ + +sunrpc-y := clnt.o xprt.o socklib.o xprtsock.o sched.o \ + auth.o auth_null.o auth_tls.o auth_unix.o \ + svc.o svcsock.o svcauth.o svcauth_unix.o \ + addr.o rpcb_clnt.o timer.o xdr.o \ + sunrpc_syms.o cache.o rpc_pipe.o sysfs.o \ + svc_xprt.o \ + xprtmultipath.o netlink.o +sunrpc-$(CONFIG_SUNRPC_DEBUG) += debugfs.o +sunrpc-$(CONFIG_SUNRPC_BACKCHANNEL) += backchannel_rqst.o +sunrpc-$(CONFIG_PROC_FS) += stats.o +sunrpc-$(CONFIG_SYSCTL) += sysctl.o -- cgit v1.3.1