Bug#927400: reportbug: fails to compare package versions

[Julien-Benjamin <julienbenjamin@protonmail.com>]

Package: reportbug
Version: 7.1.7+deb9u2
Severity: normal

Dear Maintainer,

I wanted to report a bug regarding the kernel version and reportbug says my up-to-date stable kernel version is newer than the last version.

Here is the reportbug output:
  Getting status for linux-image-4.9.0-8-amd64...
  Checking for newer versions at madison...
  Your version of linux-image-4.9.0-8-amd64 (4.9.144-3.1) is newer than that in Debian!

I wanted to list the installed package:

$ dpkg -l | grep linux-image
ii  linux-image-4.9.0-8-amd64             4.9.144-3.1                                 amd64        Linux 4.9 for 64-bit PCs
ii  linux-image-amd64                     4.9+80+deb9u6                               amd64        Linux for 64-bit PCs (meta-package)

I might be wrong but it seems that there is a bug, if not in reportbug, somewhere else (dpkg?). 

Best regards,

JB

-- Package-specific info:
** Environment settings:
INTERFACE="text"

** /home/jul/.reportbugrc:
reportbug_version "7.1.7"
mode standard
ui text
email "julienbenjamin@protonmail.com"
no-cc
header "X-Debbugs-CC: julienbenjamin@protonmail.com"
smtphost reportbug.debian.org

-- System Information:
Debian Release: 9.8
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-8-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages reportbug depends on:
ii  apt                1.4.9
ii  python3            3.5.3-1
ii  python3-reportbug  7.1.7+deb9u2

reportbug recommends no packages.

Versions of packages reportbug suggests:
pn  claws-mail                                 <none>
pn  debconf-utils                              <none>
pn  debsums                                    <none>
pn  dlocate                                    <none>
pn  emacs24-bin-common | emacs25-bin-common    <none>
ii  exim4-daemon-light [mail-transport-agent]  4.89-2+deb9u3
ii  file                                       1:5.30-1+deb9u2
ii  gir1.2-gtk-3.0                             3.22.11-1
ii  gir1.2-vte-2.91                            0.46.1-1
ii  gnupg                                      2.1.18-8~deb9u4
ii  python3-gi                                 3.22.0-2
ii  python3-gi-cairo                           3.22.0-2
pn  python3-gtkspellcheck                      <none>
pn  python3-urwid                              <none>
ii  xdg-utils                                  1.1.1-1+deb9u1

Versions of packages python3-reportbug depends on:
ii  apt                1.4.9
ii  file               1:5.30-1+deb9u2
ii  python3            3.5.3-1
ii  python3-apt        1.4.0~beta3
ii  python3-debian     0.1.30
ii  python3-debianbts  2.6.1
ii  python3-requests   2.12.4-1

python3-reportbug suggests no packages.

-- no debconf information