From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793621751; b=loMr7+yB4mp4LcTlHqrox54cfJixN+73E5evLVjP0DNVYBJPSjhztgFS5cFoOWKti4Eh kZZrS3KIQzpS4OEqsWQEOTbH8esoqplVhKlXIpI919wA2KLmSRWKPaK8MkxCowlhLLNN7 kBzxIWA5+8D3+LamDYMmSm7uOOlmWnkg+hQQwIL9HMwRTVwNO2ZoIurknMbo7TFklaTKf FA9SPXfmCJlDnfebZNodAGS/S8jUf0g9RRNhF4OPpFvayj5reJR3LoJaZUDfoRKYkjl1L vTf0Sv5GG+OLCV+U0Uhd4vG9dfAmX5IoreJlsrOFlg/jwQ15xjeSmvz0MzGFAgHRuWw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793621751; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=vrjIaaTY4rP5gMOZGPWgOU5H4RXkCNbfFg6zhsfnwrc=; b=flrQEW1q4V8I6X8eQ5QHWjMghtZeXeotzot4+l91vouhQ+Qh9R7XIawvbwcgivoBV8Oy cQBMQcT2k6mlXWKl1jJIx9T6eU6XoWCNJj1330B6khQ0FR73qKLyAuXTpy80jXg58U8cw 09r5dHlGKymoR4Iwlm5/oPLCuAl0QtJSlOye8TBxG+ODOqZuQlIcuNvEaxGZ0FrBHG5DD asyZEULAlk+14uAbfCfy0lrKX6UpNPzckEl4+MW9MRmMIub+visVgHLbVMPnqkux7wZWQ 5TaNemyBjdHAdLp1VIOCyc5ygEb4CDH49spKFZEUaoRAbGc4ODF5p4UCsWzIb3t5apg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=MBnPCJBn; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with UTF8SMTPS id 610AF60A3821; Mon, 2 Nov 2026 12:15:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=MBnPCJBn Received: by smtp.kernel.org (Postfix) with UTF8SMTPSA id 94CFC1F0157A; Mon, 2 Nov 2026 12:15:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793621751; bh=vrjIaaTY4rP5gMOZGPWgOU5H4RXkCNbfFg6zhsfnwrc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=MBnPCJBnK/NwKOsP3Pf4GIYNP0+zlX3kckJcBBbg4BswZH72L7APm7vhR0arAf9Ub qH7yOWu2TFGotE4ucbMiygWCP8BCAoJX02zwcCwOU99rkmdLdEiWlEvlf9tHYVdbhq Y0seUof8r+Tyr30TymO653OhdmUzOGZY505Vu7e+/vBr4NhEfgsuCrBOZwjGALpm6m LF/MbWOT0bvtaejHL8PhskffFL/+AaHBPQ2kwferfiYBsmT7SFdC0Of25o/415FpLA gBg44HMEGqGR9ffTEpYmWjUr/1hKkcBmc7qk5QOj1gh1PTQ+d9pFS8qBus9d2LQkr8 dll/QxWl6jIfQ== From: Jarkko Sakkinen To: David Howells Cc: Eric Biggers , linux-integrity@vger.kernel.org, Mimi Zohar , Jarkko Sakkinen , Roberto Sassu , Dmitry Kasatkin , Eric Snowberg , Paul Moore , James Morris , "Serge E. Hallyn" , Sumit Garg , James Bottomley , linux-security-module@vger.kernel.org (open list:SECURITY SUBSYSTEM), linux-kernel@vger.kernel.org (open list), keyrings@vger.kernel.org (open list:KEYS-TRUSTED-TEE) Subject: [RFC PATCH 1/4] KEYS: trusted: Disable sysfs bind attributes for TEE driver Date: Mon, 2 Nov 2026 14:15:12 +0200 Message-ID: <20261102121518.1197453-2-jarkko@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261102121518.1197453-1-jarkko@kernel.org> References: <20261102121518.1197453-1-jarkko@kernel.org> X-Mailing-List: linux-integrity@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit trusted_key_exit() calls unregister_key_type() from the TEE client driver .remove() callback. Suppress sysfs bind and unbind attributes on trusted_key_driver so userspace cannot unbind the driver and unregister key_type_trusted while the trusted module remains loaded. Signed-off-by: Jarkko Sakkinen --- security/keys/trusted-keys/trusted_tee.c | 1 + 1 file changed, 1 insertion(+) diff --git a/security/keys/trusted-keys/trusted_tee.c b/security/keys/trusted-keys/trusted_tee.c index 6e465c8bef5e..5d1288189e5c 100644 --- a/security/keys/trusted-keys/trusted_tee.c +++ b/security/keys/trusted-keys/trusted_tee.c @@ -264,6 +264,7 @@ static struct tee_client_driver trusted_key_driver = { .id_table = trusted_key_id_table, .driver = { .name = DRIVER_NAME, + .suppress_bind_attrs = true, }, }; -- 2.47.3