Public bug reported: Please take this with a grain of salt as I'm not reporting it with a clean trusty install at my fingertips.
ubuntu-keyring ships a /usr/share/keyrings/ubuntu-archive-keyring.gpg file that contains the Ubuntu CD Signing Keys (old and new): % gpg /usr/share/keyrings/ubuntu-archive-keyring.gpg pub 1024D/437D05B5 2004-09-12 Ubuntu Archive Automatic Signing Key <ftpmas...@ubuntu.com> sub 2048g/79164387 2004-09-12 pub 1024D/FBB75451 2004-12-30 Ubuntu CD Image Automatic Signing Key <cdim...@ubuntu.com> pub 4096R/C0B21F32 2012-05-11 Ubuntu Archive Automatic Signing Key (2012) <ftpmas...@ubuntu.com> pub 4096R/EFE21092 2012-05-11 Ubuntu CD Image Automatic Signing Key (2012) <cdim...@ubuntu.com> They end up being trusted by apt because the keyring is taken as the initial trusted key set in /etc/apt/trusted.gpg. This is most likely not what we want. ** Affects: ubuntu-keyring (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1363480 Title: ubuntu-keyring imports the Ubuntu CD Signing Key as a key trusted by apt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-keyring/+bug/1363480/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs