From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23525 invoked by alias); 24 Jun 2012 03:49:13 -0000 Received: (qmail 23477 invoked by uid 22791); 24 Jun 2012 03:49:12 -0000 X-SWARE-Spam-Status: No, hits=-3.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED,SARE_SUB_PCT_LETTER,TW_FW X-Spam-Check-By: sourceware.org Received: from localhost (HELO sourceware.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sun, 24 Jun 2012 03:48:25 +0000 From: "bugdal at aerifal dot cx" To: glibc-bugs@sources.redhat.com Subject: [Bug stdio/14286] Integer overflow in computing allocation size in vfwprintf %s handling Date: Sun, 24 Jun 2012 03:49:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: stdio X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: bugdal at aerifal dot cx X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact glibc-bugs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: glibc-bugs-owner@sourceware.org X-SW-Source: 2012-06/txt/msg00235.txt.bz2 http://sourceware.org/bugzilla/show_bug.cgi?id=14286 --- Comment #1 from Rich Felker 2012-06-24 03:48:25 UTC --- Created attachment 6476 --> http://sourceware.org/bugzilla/attachment.cgi?id=6476 test case Ideally, this program should print -1 after the first wprintf fails with EILSEQ, possibly after printing "hello world". Or if it fails due to memory exhaustion, it should print -1 with errno set to ENOMEM. Instead (on 32-bit machines) it simply prints "h\n" followed by a 2 (the return value of the first wprintf). Apologies that the test program is not the best-tuned to demonstrate the bug. I designed it from a standpoint of wanting to see if the bug caused exploitable memory corruption, rather than best demonstrating the non-exploitable problem. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.