Wireshark-bugs: [Wireshark-bugs] [Bug 3490] New: Purify: UMR in dfw_append_const()
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Mon, 25 May 2009 20:56:45 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3490

           Summary: Purify: UMR in dfw_append_const()
           Product: Wireshark
           Version: SVN
          Platform: x86
        OS/Version: Windows XP
            Status: NEW
          Severity: Minor
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: krj@xxxxxxxxxxxxx



Kovarththanan Rajaratnam <krj@xxxxxxxxxxxxx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #3043|                            |review_for_checkin?
               Flag|                            |


Created an attachment (id=3043)
 --> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=3043)
Attached patch fixes this issue by initializing 'next_const_id' to 0 in
dfwork_new().

Build Information:
Version 1.1.4 (SVN Rev 28322)

Copyright 1998-2009 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled with GTK+ 2.16.1, with GLib 2.20.1, with WinPcap (version unknown),
with libz 1.2.3, without POSIX capabilities, with libpcre 7.0, with SMI 0.4.8,
with c-ares 1.6.0, with Lua 5.1, with GnuTLS 2.6.4, with Gcrypt 1.4.4, with MIT
Kerberos, with GeoIP, with PortAudio V19-devel (built May  9 2009), with
AirPcap.

Running on Windows XP Service Pack 2, build 2600, with WinPcap version 4.0.2
(packet.dll version 4.0.0.1040), based on libpcap version 0.9.5, GnuTLS 2.6.4,
Gcrypt 1.4.4, without AirPcap.

Built using Microsoft Visual C++ 6.0

Wireshark is Open Source Software released under the GNU General Public
License.

Check the man page and http://www.wireshark.org for more information.

--
Purify reports an uninitialized memory read in dfw_append_const() when
accessing the 'next_const_id' member. This seems to be caused by dfwork_new()
which doesn't properly initialize the member.


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