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 --- tools/perf/python/tracepoint.py | 55 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100755 tools/perf/python/tracepoint.py (limited to 'tools/perf/python/tracepoint.py') diff --git a/tools/perf/python/tracepoint.py b/tools/perf/python/tracepoint.py new file mode 100755 index 000000000..15b0c8268 --- /dev/null +++ b/tools/perf/python/tracepoint.py @@ -0,0 +1,55 @@ +#! /usr/bin/env python +# SPDX-License-Identifier: GPL-2.0 +# -*- python -*- +# -*- coding: utf-8 -*- + +import perf + +def change_proctitle(): + try: + import setproctitle + setproctitle.setproctitle("tracepoint.py") + except: + print("Install the setproctitle python package to help with top and friends") + +def main(): + change_proctitle() + cpus = perf.cpu_map() + threads = perf.thread_map(-1) + evlist = perf.parse_events("sched:sched_switch", cpus, threads) + # Disable tracking of mmaps and similar that are unnecessary. + for ev in evlist: + ev.tracking = False + # Configure evsels with default record options. + evlist.config() + # Simplify the sample_type and read_format of evsels + for ev in evlist: + ev.sample_type = ev.sample_type & ~perf.SAMPLE_IP + ev.read_format = 0 + + evlist.open() + evlist.mmap() + evlist.enable(); + + while True: + evlist.poll(timeout = -1) + for cpu in cpus: + event = evlist.read_on_cpu(cpu) + if not event: + continue + + if not isinstance(event, perf.sample_event): + continue + + print("time %u prev_comm=%s prev_pid=%d prev_prio=%d prev_state=0x%x ==> next_comm=%s next_pid=%d next_prio=%d" % ( + event.sample_time, + event.prev_comm, + event.prev_pid, + event.prev_prio, + event.prev_state, + event.next_comm, + event.next_pid, + event.next_prio)) + +if __name__ == '__main__': + main() -- cgit v1.3.1