[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Launchpad Bug Tracker]

This bug was fixed in the package ifupdown - 0.8.10ubuntu1.1

---
ifupdown (0.8.10ubuntu1.1) xenial; urgency=medium

  * Fix a crash when multiple interfaces are specified for no-scripts
(LP: #1618726)

 -- Richard Laager   Wed, 31 Aug 2016 02:29:11 -0500

** Changed in: ifupdown (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Bug Watch Updater]

** Changed in: ifupdown (Debian)
   Status: New => Fix Released

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Launchpad Bug Tracker]

This bug was fixed in the package ifupdown - 0.8.13ubuntu2

---
ifupdown (0.8.13ubuntu2) yakkety; urgency=medium

  * Fix a crash when multiple interfaces are specified for no-scripts
(LP: #1618726)

 -- Richard Laager   Wed, 31 Aug 2016 02:26:31 -0500

** Changed in: ifupdown (Ubuntu)
   Status: Fix Committed => Fix Released

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Richard Laager]

The package from proposed works. I tested version 0.8.10ubuntu1.1. The
diff looks correct.

** Tags removed: verification-needed
** Tags added: verification-done

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Andy Whitcroft]

Hello Richard, or anyone else affected,

Accepted ifupdown into xenial-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/ifupdown/0.8.10ubuntu1.1 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: ifupdown (Ubuntu Xenial)
   Status: In Progress => Fix Committed

** Tags added: verification-needed

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Bug Watch Updater]

** Changed in: ifupdown (Debian)
   Status: Unknown => New

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Mathew Hodson]

** Also affects: ifupdown (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=837732
   Importance: Unknown
   Status: Unknown

** Changed in: ifupdown (Ubuntu Xenial)
   Importance: Undecided => High

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Michael Hudson-Doyle]

Oops, meant to say a bit more than just that. I verified the problem in
Debian unstable, verified that the patch fixed the problem, and
forwarded the bug/patch along to debian.

I've also uploaded the patch to Yakkety and put it into the SRU queue
for Xenial. Thanks for the report and patch!

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Michael Hudson-Doyle]

I posted https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=837732

** Bug watch added: Debian Bug tracker #837732
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=837732

** Also affects: ifupdown (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Description changed:

+ [Impact]
+ ifup and ifupdown segfault if multiple interfaces are listed in no-scripts
+ 
  This is a trivially reproducible crash in ifup/ifdown, with a patch
  attached.
  
+ [Test Case]
  Steps to reproduce:
  1) echo no-scripts foo bar >> /etc/network/interfaces
  2) ifup baz
  
  Expected results:
  Unknown interface baz
  
  Actual results:
  Segmentation fault (core dumped)
  
  It's irrelevant whether the second interface is on the same no-scripts line 
or separate one. This will crash just the same:
  echo no-scripts foo >> /etc/network/interfaces
  echo no-scripts bar >> /etc/network/interfaces
+ 
+ [Regression potential]
+ Seems slight. The patch fixes a clear bug in code that is only used to 
process the no-scripts (and apparently no-auto-down) stanzas.

** Changed in: ifupdown (Ubuntu)
   Status: New => Fix Committed

** Changed in: ifupdown (Ubuntu Xenial)
   Status: New => In Progress

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Richard Laager]

I did not forward it. I sometimes do, sometimes don't, depending on a
lot of factors. In this case, even though I assumed it would affect
Debian, I was hesitant to claim the existence of a high priority bug if
I hadn't personally verified it.

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Michael Hudson-Doyle]

Fun. This bug affects Debian too it seems, I'll forward it along there
unless you have already?

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Mathew Hodson]

** Tags added: patch

** Changed in: ifupdown (Ubuntu)
   Importance: Undecided => High

** Tags added: xenial yakkety

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  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Richard Laager]

** Patch added: "A fix for xenial"
   
https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1618726/+attachment/4731337/+files/ifupdown-fix-1618726-xenial.debdiff

** Description changed:

- This is a trivially reproducible crash in ifup/ifdown.
+ This is a trivially reproducible crash in ifup/ifdown, with a patch
+ attached.
  
  Steps to reproduce:
  1) echo no-scripts foo bar >> /etc/network/interfaces
  2) ifup baz
  
  Expected results:
  Unknown interface baz
  
  Actual results:
  Segmentation fault (core dumped)
  
  It's irrelevant whether the second interface is on the same no-scripts line 
or separate one. This will crash just the same:
  echo no-scripts foo >> /etc/network/interfaces
  echo no-scripts bar >> /etc/network/interfaces

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  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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[Bug 1618726] Re: ifup & ifdown crash if multiple interfaces are listed in no-scripts

[Richard Laager]

** Patch added: "A fix for yakkety"
   
https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1618726/+attachment/4731336/+files/ifupdown-fix-1618726-yakkety.debdiff

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Title:
  ifup & ifdown crash if multiple interfaces are listed in no-scripts

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