apt-get upgrade crashes with Segmentation fault (core dumped)

[Thomas Novin]

Binary package hint: apt

If I run apt-get upgrade, apt-get crashes with Segmentation fault (core dumped). I'm attaching file from /var/crash.

I've read https://wiki.ubuntu.com/DebuggingProgramCrash but I cannot install the program, apt crashes then aswell :)

$ sudo apt-get upgrade
<snip>
WARNING: The following packages cannot be authenticated!
<snip>
(Reading database ... 122786 files and directories currently installed.)
Preparing to replace libgnomevfs2-common 1:2.19.91-0ubuntu1 (using .../libgnomevfs2-common_1%3a2.20.0-0ubuntu1_all.deb) ...
Segmentation fault (core dumped)

[Thomas Novin (thomasn80)]

Btw, this is reproducible.

[CodeAddict (josvanbakel)]

I had the same problem with apt-get.
You can fix it by manually installing the new apt-get and dpkg package:

1. run `apt-get update` to fetch the updates
2. do a `apt-get upgrade` to download the updated packages
3. goto /var/cache/apt/archives/
4. run `dpkg -i apt_0.7.6ubuntu10_*.deb`
5. run `dpkg -i dpkg_1.4.5ubuntu14_*.deb`
6. and finally: `dpkg -i dpkg-dev_1.4.5ubuntu14_all.deb`
7. now apt-get should work just fine :)