From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 108223 invoked by alias); 16 Jun 2018 23:01:24 -0000 Mailing-List: contact elfutils-devel-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Post: List-Help: List-Subscribe: Sender: elfutils-devel-owner@sourceware.org Received: (qmail 108208 invoked by uid 89); 16 Jun 2018 23:01:23 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Checked: by ClamAV 0.99.4 on sourceware.org X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=ham version=3.3.2 spammy=reached X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=ham version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on sourceware.org X-Spam-Level: X-HELO: gnu.wildebeest.org Received: from wildebeest.demon.nl (HELO gnu.wildebeest.org) (212.238.236.112) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Sat, 16 Jun 2018 23:01:22 +0000 Received: from tarox.wildebeest.org (tarox.wildebeest.org [172.31.17.39]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by gnu.wildebeest.org (Postfix) with ESMTPSA id 4F4493001700 for ; Sun, 17 Jun 2018 01:01:20 +0200 (CEST) Received: by tarox.wildebeest.org (Postfix, from userid 1000) id 3E77D40216B3; Sun, 17 Jun 2018 01:01:20 +0200 (CEST) Message-ID: <1529190080.12946.115.camel@klomp.org> Subject: Re: [PATCH] readelf: Make sure print_form_data always consumes DW_FORM_strx[1234] data. From: Mark Wielaard To: elfutils-devel@sourceware.org Date: Sat, 16 Jun 2018 23:01:00 -0000 In-Reply-To: <20180613231012.19118-1-mark@klomp.org> References: <20180613231012.19118-1-mark@klomp.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Evolution 3.22.6 (3.22.6-14.el7) Mime-Version: 1.0 X-Spam-Flag: NO X-IsSubscribed: yes X-SW-Source: 2018-q2/txt/msg00226.txt.bz2 On Thu, 2018-06-14 at 01:10 +0200, Mark Wielaard wrote: > Found by afl-fuzz. When printing DW_FORM_strx[1234] data eu-readelf didn't > increase readp which meant eu-readelf would keep printing the same line > dirs or files encoded with strx[1234] names. This meant that for insane > large dir or file counts eu-readelf would just keep printing endlessly > because we never reached and of the .debug_line buffer. Pushed to master.