From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F728C001E0 for ; Mon, 23 Oct 2023 11:19:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233759AbjJWLTG (ORCPT ); Mon, 23 Oct 2023 07:19:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233385AbjJWLTF (ORCPT ); Mon, 23 Oct 2023 07:19:05 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 71BC4DC for ; Mon, 23 Oct 2023 04:19:03 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 72E89C433C7; Mon, 23 Oct 2023 11:19:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1698059942; bh=GDnv4Ys2pjUPTOh0wIrYRdLtfuMI+5n6dkX2JcSat5w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xk+velNpUrsziGlm28Ib4XWb3DObGgSCryF9o5T6rkgox4SOILHWKQzGwL9RohV9F ly0qlquAa405m1DazsPwTUfCqmDbCSBXEvzZrx8UMyAnC3D8nI2PW2+4eGX9+hE7yt YUQpTG3fP+t9i1e9V0gzQrLEW40yW5+wpIi7ofjs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, syzbot+c90849c50ed209d77689@syzkaller.appspotmail.com, Edward AD , Luiz Augusto von Dentz Subject: [PATCH 4.19 96/98] Bluetooth: hci_sock: fix slab oob read in create_monitor_event Date: Mon, 23 Oct 2023 12:57:25 +0200 Message-ID: <20231023104816.906461854@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231023104813.580375891@linuxfoundation.org> References: <20231023104813.580375891@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Edward AD commit 18f547f3fc074500ab5d419cf482240324e73a7e upstream. When accessing hdev->name, the actual string length should prevail Reported-by: syzbot+c90849c50ed209d77689@syzkaller.appspotmail.com Fixes: dcda165706b9 ("Bluetooth: hci_core: Fix build warnings") Signed-off-by: Edward AD Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Greg Kroah-Hartman --- net/bluetooth/hci_sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -430,7 +430,7 @@ static struct sk_buff *create_monitor_ev ni->type = hdev->dev_type; ni->bus = hdev->bus; bacpy(&ni->bdaddr, &hdev->bdaddr); - memcpy(ni->name, hdev->name, 8); + memcpy(ni->name, hdev->name, strlen(hdev->name)); opcode = cpu_to_le16(HCI_MON_NEW_INDEX); break;