Wireshark-bugs: [Wireshark-bugs] [Bug 5392] New: MAC-LTE dissector returns prematurely
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Sat, 13 Nov 2010 05:47:42 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5392

           Summary: MAC-LTE dissector returns prematurely
           Product: Wireshark
           Version: 1.5.x (Experimental)
          Platform: x86
        OS/Version: Windows XP
            Status: NEW
          Severity: Major
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: jodd@xxxxxx


Created an attachment (id=5458)
 --> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=5458)
Patch for mis-placed return statement

Build Information:
Version 1.5.0 (SVN Rev 34855 from /trunk)

Copyright 1998-2010 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 (32-bit) with GTK+ 2.16.6, with GLib 2.24.2, with WinPcap (version
unknown), with libz 1.2.3, without POSIX capabilities, without libpcre, with
SMI
0.4.8, with c-ares 1.7.1, with Lua 5.1, without Python, with GnuTLS 2.8.5, with
Gcrypt 1.4.5, with MIT Kerberos, with GeoIP, with PortAudio V19-devel (built
Nov
13 2010), with AirPcap.

Running on Windows XP Service Pack 3, build 2600, with WinPcap version 4.1.2
(packet.dll version 4.1.0.2001), based on libpcap version 1.0 branch 1_0_rel0b
(20091008), GnuTLS 2.8.5, Gcrypt 1.4.5, without AirPcap.

Built using Microsoft Visual C++ 9.0 build 21022

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

Check the man page and http://www.wireshark.org for more information.
--
The changes introduced on packet-mac-lte.c with SNV revision 34852 leads to the
dissector always returning prematurely if p_mac_lte_info->rntiType equals
C_RNTI (3). This is caused by the return placed outside the if statement that
is supposed to check for invalid C-RNTI values and to return in that case only.

See the attached patch for a possible fix.

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