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 --- scripts/jobserver-exec | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100755 scripts/jobserver-exec (limited to 'scripts/jobserver-exec') diff --git a/scripts/jobserver-exec b/scripts/jobserver-exec new file mode 100755 index 000000000..21b319e6c --- /dev/null +++ b/scripts/jobserver-exec @@ -0,0 +1,35 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0+ + +""" +Determines how many parallel tasks "make" is expecting, as it is +not exposed via any special variables, reserves them all, runs a subprocess +with PARALLELISM environment variable set, and releases the jobs back again. + +See: + https://www.gnu.org/software/make/manual/html_node/POSIX-Jobserver.html#POSIX-Jobserver +""" + +import os +import sys + +LIB_DIR = "../tools/lib/python" +SRC_DIR = os.path.dirname(os.path.realpath(__file__)) + +sys.path.insert(0, os.path.join(SRC_DIR, LIB_DIR)) + +from jobserver import JobserverExec # pylint: disable=C0415 + + +def main(): + """Main program""" + if len(sys.argv) < 2: + name = os.path.basename(__file__) + sys.exit("usage: " + name +" command [args ...]\n" + __doc__) + + with JobserverExec() as jobserver: + return jobserver.run(sys.argv[1:]) + + +if __name__ == "__main__": + sys.exit(main()) -- cgit v1.3.1