[Bug 1576975] [NEW] Update manager does not show all updates

[Orzech]

*** This bug is a security vulnerability ***

Public security bug reported:

1) Ubuntu version:
Description:	Ubuntu 16.04 LTS
Release:	16.04

2) Package version:
update-manager:
  Installed: 1:16.04.3
  Candidate:   1:16.04.3

3) Expected scenario:
Update manager should show all available updates.
4) What really happens:
Update manager does not show the following updates (listed with "sudo apt list --upgradeable"):
bind9-host/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
dnsutils/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
libbind9-140/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
libdns-export162/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
libdns162/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
libisc-export160/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
libisc160/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
libisccc140/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
libisccfg140/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
liblwres141/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
Instead, I get only some notification that important system updates are awaiting (or something like that), but when I open update manager it tells me that my system is up to date. Before that, I had disabled automatic security updates installation, xenial-backports and multiverse in update-manager.

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: xenial

** Package changed: octave (Ubuntu) => update-manager (Ubuntu)

** Information type changed from Private Security to Public Security

** Description changed:

  1) Ubuntu version:
  Description:	Ubuntu 16.04 LTS
  Release:	16.04
  
  2) Package version:
  update-manager:
-   Installed: 1:16.04.3
-   Candidate:   1:16.04.3
+   Installed: 1:16.04.3
+   Candidate:   1:16.04.3
  
  3) Expected scenario:
  Update manager should show all available updates.
  4) What really happens:
  Update manager does not show the following updates:
  bind9-host/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  dnsutils/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libbind9-140/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libdns-export162/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libdns162/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libisc-export160/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libisc160/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libisccc140/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libisccfg140/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  liblwres141/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
- Instead, I get only some notification that important system packages are awaiting installation, but when I open update manager it tells me that my system is up to date. I have disabled automatic security updates installation, xenial-backports and multiverse in update-manager.
+ Instead, I get only some notification that important system packages are awaiting installation, but when I open update manager it tells me that my system is up to date. Before that, I had disabled automatic security updates installation, xenial-backports and multiverse in update-manager.

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https://bugs.launchpad.net/bugs/1576975

Title:
  Update manager does not show all updates

Status in update-manager package in Ubuntu:
  New

Bug description:
  1) Ubuntu version:
  Description:	Ubuntu 16.04 LTS
  Release:	16.04

  2) Package version:
  update-manager:
    Installed: 1:16.04.3
    Candidate:   1:16.04.3

  3) Expected scenario:
  Update manager should show all available updates.
  4) What really happens:
  Update manager does not show the following updates (listed with "sudo apt list --upgradeable"):
  bind9-host/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  dnsutils/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libbind9-140/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libdns-export162/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libdns162/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libisc-export160/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libisc160/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libisccc140/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  libisccfg140/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  liblwres141/xenial-updates 1:9.10.3.dfsg.P4-8ubuntu1 amd64 [upgradable from: 1:9.10.3.dfsg.P4-8]
  Instead, I get only some notification that important system updates are awaiting (or something like that), but when I open update manager it tells me that my system is up to date. Before that, I had disabled automatic security updates installation, xenial-backports and multiverse in update-manager.

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