Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.
** Information type changed from Private Security to Public -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to libav in Ubuntu. https://bugs.launchpad.net/bugs/1678594 Title: package libavutil52 6:9.20-0ubuntu0.14.04.1 [modified: usr/share/doc/libavutil52/changelog.Debian.gz] failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libavutil52/changelog.Debian.gz', which is different from other instances of package libavutil52:i386 Status in libav package in Ubuntu: New Bug description: 'Error: Brokencount > 0' ProblemType: Package DistroRelease: Ubuntu 14.04 Package: libavutil52 6:9.20-0ubuntu0.14.04.1 [modified: usr/share/doc/libavutil52/changelog.Debian.gz] ProcVersionSignature: Ubuntu 4.4.0-66.87~14.04.1-generic 4.4.44 Uname: Linux 4.4.0-66-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.21 Architecture: amd64 Date: Sun Apr 2 16:15:39 2017 Dependencies: gcc-4.9-base 4.9.3-0ubuntu4 libc6 2.19-0ubuntu6.11 libgcc1 1:4.9.3-0ubuntu4 multiarch-support 2.19-0ubuntu6.9 DpkgTerminalLog: Preparing to unpack .../libavutil52_6%3a9.20-0ubuntu0.14.04.1_i386.deb ... Unpacking libavutil52:i386 (6:9.20-0ubuntu0.14.04.1) over (6:9.11-2ubuntu2) ... dpkg: error processing archive /var/cache/apt/archives/libavutil52_6%3a9.20-0ubuntu0.14.04.1_i386.deb (--unpack): trying to overwrite shared '/usr/share/doc/libavutil52/changelog.Debian.gz', which is different from other instances of package libavutil52:i386 DuplicateSignature: package:libavutil52:6:9.20-0ubuntu0.14.04.1 [modified: usr/share/doc/libavutil52/changelog.Debian.gz]:trying to overwrite shared '/usr/share/doc/libavutil52/changelog.Debian.gz', which is different from other instances of package libavutil52:i386 ErrorMessage: trying to overwrite shared '/usr/share/doc/libavutil52/changelog.Debian.gz', which is different from other instances of package libavutil52:i386 InstallationDate: Installed on 2017-03-22 (10 days ago) InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803) RelatedPackageVersions: dpkg 1.17.5ubuntu5.7 apt 1.0.1ubuntu2.14 SourcePackage: libav Title: package libavutil52 6:9.20-0ubuntu0.14.04.1 [modified: usr/share/doc/libavutil52/changelog.Debian.gz] failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libavutil52/changelog.Debian.gz', which is different from other instances of package libavutil52:i386 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libav/+bug/1678594/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp