Bug 1326662

Summary: Traceroute segfaults during MTU discovery
Product: Red Hat Enterprise Linux 7 Reporter: Joshua Lamorie <joshua.lamorie>
Component: tracerouteAssignee: Jan Synacek <jsynacek>
Status: CLOSED NEXTRELEASE QA Contact: BaseOS QE Security Team <qe-baseos-security>
Severity: high Docs Contact:
Priority: unspecified    
Version: 7.0   
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: traceroute-2.0.22-1.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-04-13 10:32:47 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Joshua Lamorie 2016-04-13 10:09:58 UTC 
Description of problem:

When attempting to determine MTU size with traceroute, the application crashes with segmentation fault.

Version-Release number of selected component (if applicable):

Tested on CentOS 7

The version of traceroute:

$ traceroute --version
Modern traceroute for Linux, version 2.0.19, Jun 10 2014
Copyright (c) 2008 Dmitry Butskoy, License: GPL v2 or any later

How reproducible:

Every time.

Steps to Reproduce:
1. Execute 'traceroute --mtu 8.8.8.8'
2. Observe segfault.

Actual results:

$ traceroute --mtu 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 65000 byte packetsSegmentation fault (core dumped)

Expected results:


Additional info:

This issue has been seen in other distros:

* https://bugs.launchpad.net/ubuntu/+source/traceroute/+bug/1330558

This has been partially noted upstream.

* https://sourceforge.net/p/traceroute/bugs/8/

Someone tried to reference a previous traceroute bug related to this:

* https://bugzilla.redhat.com/show_bug.cgi?id=903290
Comment 3 Jan Synacek 2016-04-13 10:33:54 UTC 
The fix is already scheduled for RHEL-7.3.