From owner-freebsd-bugs@freebsd.org  Fri Jan 12 10:59:10 2018
Return-Path: <owner-freebsd-bugs@freebsd.org>
Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 54A2EEA59FE
 for <freebsd-bugs@mailman.ysv.freebsd.org>;
 Fri, 12 Jan 2018 10:59:10 +0000 (UTC)
 (envelope-from bygg@mail.cafax.se)
Received: from mail.cafax.se (mail.cafax.se [IPv6:2a00:801:11:53::4])
 (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id EBB2183479
 for <freebsd-bugs@freebsd.org>; Fri, 12 Jan 2018 10:59:09 +0000 (UTC)
 (envelope-from bygg@mail.cafax.se)
Received: from mail.cafax.se (localhost [127.0.0.1])
 by mail.cafax.se (8.15.1/8.15.1) with ESMTPS id w0CAx6Ki001923
 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO)
 for <freebsd-bugs@freebsd.org>; Fri, 12 Jan 2018 11:59:06 +0100 (MET)
Received: (from bygg@localhost)
 by mail.cafax.se (8.15.1/8.15.1/Submit) id w0CAx6W8004700
 for freebsd-bugs@freebsd.org; Fri, 12 Jan 2018 11:59:06 +0100 (MET)
Sender: Johnny Eriksson <bygg@cafax.se>
Date: Fri, 12 Jan 2018 11:59:06 WET
From: Johnny Eriksson <bygg@cafax.se>
Reply-To: Johnny Eriksson <bygg@cafax.se>
To: freebsd-bugs@freebsd.org
Subject: elfdump
Message-ID: <CMM.0.91.0.1515754746.bygg@mail.cafax.se>
X-Scanned-By: MIMEDefang 2.71 on 192.71.228.4
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.25
Precedence: list
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-bugs>,
 <mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs/>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
 <mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 12 Jan 2018 10:59:10 -0000

When parsing a 64-bit big-endian elf file (on a 64-bit X86-64 system),
the sh_flags entry in the section header is mis-parsed since the routine
used only reads a 32-bit value.

*** elfdump.c   Fri Jan 12 10:43:35 2018
--- elfdump.c.org       Fri Jan 12 10:42:11 2018
***************
*** 798,804 ****
		v = (char *)sh + i * shentsize;
		name = elf_get_word(e, v, SH_NAME);
		type = elf_get_word(e, v, SH_TYPE);
!               flags = elf_get_size(e, v, SH_FLAGS);
		addr = elf_get_addr(e, v, SH_ADDR);
		offset = elf_get_off(e, v, SH_OFFSET);
		size = elf_get_size(e, v, SH_SIZE);
--- 798,804 ----
		v = (char *)sh + i * shentsize;
		name = elf_get_word(e, v, SH_NAME);
		type = elf_get_word(e, v, SH_TYPE);
!               flags = elf_get_word(e, v, SH_FLAGS);
		addr = elf_get_addr(e, v, SH_ADDR);
		offset = elf_get_off(e, v, SH_OFFSET);
		size = elf_get_size(e, v, SH_SIZE);

Possibly the (new) call to elf_get_size() should be changed to something
a little bit more informative.

--Johnny