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[Marc Deslauriers <marc.deslauriers@xxxxxxxxxxxxx>]

** Information type changed from Private Security to Public

** Package changed: ubuntu => apt (Ubuntu)

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https://bugs.launchpad.net/bugs/1464801

Title:
  apt-get update segmentation fault with backports

Status in apt package in Ubuntu:
  New

Bug description:
  I noticed starting yesterday (2015-06-11) that "apt-get update" would
  give "segmentation fault" with exit code 139. "apt-get upgrade" would
  also segfault with exit code 139.

  Trying various things, if I comment out in /etc/apt/sources.lst:
  deb http://archive.ubuntu.com/ubuntu precise-backports main restricted universe multiverse
  ... "apt-get update" then works normally and "upgrade" will upgrade new package revisions.
  If I add back the backports line and "apt-get update", the segfaults will start happening again.

  This only happens on my 12.04 LTS systems. My 14.04 LTS systems do not
  have any problems with backports.

  My 12.04 systems include:
  minimally installed laptop
  minimally installed VPS
  minimally installed firewall
  minimally installed virtualbox vm
  remastered live CD and its chroot master
  remastered ubuntu-rescue-remix live CD and its chroot master
  12.04 chroot for running older programs that won't work under 14.04

  Since its happening to all the 12.04 installs I have, I think this is
  widespread. I'm surprised there hasn't been a bug filed on it already.

  "apt-cache policy" crashed until I removed backports and did an update
  again.

  I consider this to be a security issue as it was blocking me from
  getting recent SSL/encryption updates that my 14.04 systems could get
  without problems. As a whole, it would block all updates until
  backports was removed.

  I did a tar.gz of anything "backports" in /var and attached it. My
  guess is that some kind of malformed entry in one of the apt
  description files got corrupted somehow. These files should allow for
  separate bug reproduction in case backports gets changed in the mean
  time.

  ----------

  lsb_release -rd
  Description:	Ubuntu 12.04.5 LTS
  Release:	12.04

  apt-cache policy apt
  apt:
    Installed: 0.8.16~exp12ubuntu10.24
    Candidate: 0.8.16~exp12ubuntu10.24
    Version table:
   *** 0.8.16~exp12ubuntu10.24 0
          500 http://archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
          100 /var/lib/dpkg/status
       0.8.16~exp12ubuntu10.21 0
          500 http://security.ubuntu.com/ubuntu/ precise-security/main i386 Packages
       0.8.16~exp12ubuntu10 0
          500 http://archive.ubuntu.com/ubuntu/ precise/main i386 Packages

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