From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 CE7AA514753; Wed, 30 Sep 2026 18:24:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790792665; cv=none; b=nxf4Or+qkqDmStVD8LuNhvdB6aeiuQyiNW3OB86NnSCogw4q+rZ9xCs7AxjYS3Q/CSP1IbZibGLrLxShjVZYTP1/udzhdS+SO3tGGllfxqmYyRPcTwnfLVS5r5+SWbNnaDYMEyjPUg/G0WbZ3cSxS+MjcBDzq/UiBlQUdsqJgOY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790792665; c=relaxed/simple; bh=qGROW1rTalewfxhqy1YqKmgEBwocI47UuIVHtiY1XUw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XEiipLl0izeaQPrg2SebIEPq1FMAFYu696NX0OptTaIbImKqmk01bePuKb+je9ua/TgsCigNY6G/hiNpyZohOurcF/xXjH5N1CsQ02CBU1ylBO8B4Wv/8neQQxRAgRZUhyc/OjklaApgwt5qoKF0q3WRMTsTUp0197HGlNIkePM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LTxeESGR; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="LTxeESGR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E27431F00898; Wed, 30 Sep 2026 18:24:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790792664; bh=V9JKtgovQTuCgfw1+jwz1qdJExFSfWsDuQYt5O+sIV4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=LTxeESGRBM0brx4VMjYDu7oe9TTLH5vyrPdDfxRzmzck5blvQ2icRV5IDvrGadl8/ N0WwoewtHC14qG/ccmzO53AwERXsWr7YHffBpOdq7oTjFpYOr1YAh49hQVG19RUGEg wihxPA7s4lpVGcwflMbsNEwmY/HklKXCJHzkdHRg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Aldo Ariel Panzardo , Luiz Augusto von Dentz Subject: [PATCH 5.15 734/752] Bluetooth: hci_sock: reject out-of-range OCF values Date: Wed, 30 Sep 2026 17:30:04 +0200 Message-ID: <20260930152414.100266714@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260930152358.131179731@linuxfoundation.org> References: <20260930152358.131179731@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: Aldo Ariel Panzardo commit e93fad891c72deb84cae49430163b384ebcc92b1 upstream. The raw HCI socket security filter has 128 OCF bits per supported OGF, but masks the 10-bit OCF with 127 before looking up the command. An unprivileged socket can therefore submit a reserved OCF that aliases an allowlisted command modulo 128. A conforming controller should reject reserved opcodes. Nevertheless, the security decision must apply to the opcode that will actually be sent, especially since controller-specific behavior is outside the host stack's control. Reject OCF values that cannot be represented by the security filter instead of aliasing them onto an unrelated command. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Signed-off-by: Aldo Ariel Panzardo Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Greg Kroah-Hartman --- net/bluetooth/hci_sock.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -1848,7 +1848,8 @@ static int hci_sock_sendmsg(struct socke u16 ocf = hci_opcode_ocf(opcode); if (((ogf > HCI_SFLT_MAX_OGF) || - !hci_test_bit(ocf & HCI_FLT_OCF_BITS, + (ocf > HCI_FLT_OCF_BITS) || + !hci_test_bit(ocf, &hci_sec_filter.ocf_mask[ogf])) && !capable(CAP_NET_RAW)) { err = -EPERM;