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=1792437171; b=knBMo35OGHWGLtj4uqo9bvT4/6W5ZA78LqJGmSxLTdN1xHAVYzWvKJoJLq9lAnpLqPHD o4TZaefWwcAw/KzKCBcngEL9eYU/gJjLqe2tCgFPV9cYsbTNbT3U3E1tIC5CRHs/71i88 w9sV1q8x34b1gDVIOcfzxUZb0Y9E6fQoRP7aI/hdgk6ZqgPW9+4rWir8y5m7mR6ofcYuK bQ0VYaeWLb1hBeJ3VLugABkPWQHRmMhrk2MVK4AeP51zolqOs5cLUD7w2r3BMqVTjczRF tQysgHRURl4KyPXBOZY6fvVZobvexmp3kiUalatHiGSB4/rVPs1nEyK2Tu5esGghjvw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792437171; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=KgyAc8q3o/G/gyeGdvTtRRzKYp9WY3cB4AhYfV3oG2Y=; b=eGf9XlaxidT2fk3KIXoQ2rrDhjDYPRmZk5qalqrwLQmk0nWTUQF0NEp+FsZ1x6770OXJ 8C0mDEGLoIw5VbAoHnrrCMhpXGZBngE9i8WhFj33W0Dl1qAJm84GIK94KalDOS+b65A6d RN0FL7OsAdset2xXpFdpUiR1Yo4LIp7l6mqWQfoe1035sd3J8UoHRqJQ1wOEqKjQ6l+oD 84eyUdX6+O80Y8l8r8NYcsk1FsFii5r/g3060QUBkrB9Qa9d6OYYpvHEgJiWawXuHP1Cy sRDjwOTQozc3UehQdvos3oM+gOEHBusFJ4OhnT1QeT9UP5z50RZUUF0+I10z1E0jZnw== 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=QZtuucHz; 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 ESMTPS id EEC5C606A319; Mon, 19 Oct 2026 19:12:50 +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=QZtuucHz Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EE251F000C4; Mon, 19 Oct 2026 19:12:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792437170; bh=KgyAc8q3o/G/gyeGdvTtRRzKYp9WY3cB4AhYfV3oG2Y=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=QZtuucHzvOXdQWQfRhYR97V9CyZRmOPF3DBOXIKTFKaVuV/ZFPjMeT9qy+QQd9GhK CwWce4b6uSzOK6TwInOXGQcIKFYb4Ds4n99uJ4oN7uX3ohvGfNOp9HFkX1KhPblLU2 h8ha4ZnJXFeVqI2XRGwB8x31SdG8JkilO1N72e0QHqvnkMjoAlxCh4XbxA8zZcbtPL nyKYMexbv16CuXgi6/LbYiT92aCmu7gy6aZvJDFc1wUKwGhpG69RQWD5wuyijJmUNa HjjiHztOkBt+zZ2t/NNP3CnK/gd/678pcG2fvzhb7bjPmuY0KwRDXvsIKowQXdUBY/ JurO6LHUooK/w== Date: Mon, 19 Oct 2026 12:12:48 -0700 From: Eric Biggers To: Jarkko Sakkinen Cc: David Howells , keyrings@vger.kernel.org, stable@vger.kernel.org, Paul Moore , James Morris , "Serge E. Hallyn" , open list , "open list:SECURITY SUBSYSTEM" Subject: Re: [PATCH v2 1/6] KEYS: Expand key->{datalen,quotalen} to unsigned int Message-ID: <20261019191248.GA65095@quark> References: <20261019181732.449591-1-jarkko@kernel.org> <20261019181732.449591-2-jarkko@kernel.org> X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261019181732.449591-2-jarkko@kernel.org> On Mon, Oct 19, 2026 at 09:17:21PM +0300, Jarkko Sakkinen wrote: > In key_alloc() and key_payload_reserve(), key->quotalen and key->datalen > can receive values larger than USHRT_MAX. Could use an explanation about how this can happen. A keyring with more than 16383 links, I guess? - Eric