From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5C3D21F4C8E; Tue, 30 Sep 2025 15:15:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759245351; cv=none; b=e531ksh+VDngFMW/Pwi2nuRmGhhjmiY9odU2CR5/uQHlDQw7BY7hdeyRnoJ536BnPixY62MCY3uCw2fAm9KGSZ20FZwt/rTfsJbEp0tQqB/OmeIANOMbM8OG7KPT43A6iMmW9RS8YJDwrwDYtHoIBUjddnUJtCCkYIt2V9lOZLk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759245351; c=relaxed/simple; bh=2HX5mZrlFBOp1/ZKvFDIarmT+E4H6aNJnsqoz9cfObQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bRsWCunxVV6J0jZuwp9DRVAd5brq3e+Yj/p3RorY3rRlm1HFTza0xOidSyGGI3ZlUGKwTyUf7C68+uOaojcO2o79JzZP6UqCtbbNOMnbxB06C25bnqInpc3lxwvwjVISuspFvP9je4CBw5cg2bVCCeCIGYeR/xnK+fSoKBcbPwQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nZrW3PpD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="nZrW3PpD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C28B3C4CEF0; Tue, 30 Sep 2025 15:15:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1759245351; bh=2HX5mZrlFBOp1/ZKvFDIarmT+E4H6aNJnsqoz9cfObQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nZrW3PpD0A0up/FQizaOHwmVcOTkB3dBP8yKH7+nfdGEWx/Gth8X6wph3Pae87Bgn 4QqpgrcKVHSqGWGPAHe42EsNi1y0eG0hwG9eD0dqUyk7wNVxp9ylHcM7w3ydBAuqZg hfuCy66/LtmqSPL/P/9BM8qWpA528pW6rz99Q/KA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Masami Hiramatsu (Google)" Subject: [PATCH 5.15 142/151] tracing: dynevent: Add a missing lockdown check on dynevent Date: Tue, 30 Sep 2025 16:47:52 +0200 Message-ID: <20250930143833.246927362@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250930143827.587035735@linuxfoundation.org> References: <20250930143827.587035735@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Masami Hiramatsu (Google) commit 456c32e3c4316654f95f9d49c12cbecfb77d5660 upstream. Since dynamic_events interface on tracefs is compatible with kprobe_events and uprobe_events, it should also check the lockdown status and reject if it is set. Link: https://lore.kernel.org/all/175824455687.45175.3734166065458520748.stgit@devnote2/ Fixes: 17911ff38aa5 ("tracing: Add locked_down checks to the open calls of files created for tracefs") Signed-off-by: Masami Hiramatsu (Google) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace_dynevent.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/kernel/trace/trace_dynevent.c +++ b/kernel/trace/trace_dynevent.c @@ -239,6 +239,10 @@ static int dyn_event_open(struct inode * { int ret; + ret = security_locked_down(LOCKDOWN_TRACEFS); + if (ret) + return ret; + ret = tracing_check_open_get_tr(NULL); if (ret) return ret;