Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 22 Mar 2003 05:20:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 22 Mar 2003 05:20:20 -0500 Received: from caramon.arm.linux.org.uk ([212.18.232.186]:38660 "EHLO caramon.arm.linux.org.uk") by vger.kernel.org with ESMTP id ; Sat, 22 Mar 2003 05:20:19 -0500 Date: Sat, 22 Mar 2003 10:31:21 +0000 From: Russell King To: Linux Kernel List Subject: 2.4+ptrace exploit fix breaks root's ability to strace Message-ID: <20030322103121.A16994@flint.arm.linux.org.uk> Mail-Followup-To: Linux Kernel List Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i X-Message-Flag: Your copy of Microsoft Outlook is vurnerable to viruses. See www.mutt.org for more details. Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 678 Lines: 19 Hi, Are the authors of the ptrace patch aware that, in addition to closing the hole, the "fix" also prevents a ptrace-capable task (eg, strace started by root) from ptracing user threads? For example, you can't strace vsftpd processes started from xinetd. Is this intended behaviour? -- Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux http://www.arm.linux.org.uk/personal/aboutme.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/