Miikka-Markus Alhonen, I'm still not able to reproduce in Bionic (LO 6.0). Hence, you may want to test for a WORKAROUND using https://launchpad.net/~libreoffice/+archive/ubuntu/libreoffice-6-0 to further confirm this is fixed in later LO releases.
apt policy libreoffice-writer libreoffice-writer: Installed: 1:6.0.3-0ubuntu1 Candidate: 1:6.0.3-0ubuntu1 Version table: *** 1:6.0.3-0ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages 100 /var/lib/dpkg/status -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libreoffice in Ubuntu. https://bugs.launchpad.net/bugs/1772425 Title: ODT document crashes when you open it in Writer Status in libreoffice package in Ubuntu: Incomplete Bug description: The attached document makes LibreOffice Writer crash immediately after opening it, along with the following error message: *** Error in `/usr/lib/libreoffice/program/soffice.bin': munmap_chunk(): invalid pointer: 0x000055794428ad40 *** I created this ODT file by converting a Word document with Writer; "file" tells me the original was "Composite Document File V2 Document, Little Endian, Os: Windows, Version 5.0, Code page: -535, Template: Normal, Revision Number: 1, Name of Creating Application: Microsoft Word 10.0". The original document, which was sent to me by somebody else, contained parts which seemed to work fine but when I reached the end of the file, Writer crashed. This modified ODT version I'm attaching only contains the part which makes the program crash. The document is written in Arabic, in case it makes any difference. Description: Ubuntu 17.10 Release: 17.10 libreoffice-writer: Installed: 1:5.4.6-0ubuntu0.17.10.1 Candidate: 1:5.4.6-0ubuntu0.17.10.1 Version table: *** 1:5.4.6-0ubuntu0.17.10.1 500 500 http://mr.archive.ubuntu.com/ubuntu artful-updates/main amd64 Packages 100 /var/lib/dpkg/status 1:5.4.5-0ubuntu0.17.10.5 500 500 http://security.ubuntu.com/ubuntu artful-security/main amd64 Packages 1:5.4.1-0ubuntu1 500 500 http://mr.archive.ubuntu.com/ubuntu artful/main amd64 Packages ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: libreoffice-writer 1:5.4.6-0ubuntu0.17.10.1 ProcVersionSignature: Ubuntu 4.13.0-41.46-generic 4.13.16 Uname: Linux 4.13.0-41-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.8 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon May 21 14:09:36 2018 InstallationDate: Installed on 2017-02-13 (462 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fi_FI.utf-8 SHELL=/bin/bash SourcePackage: libreoffice UpgradeStatus: Upgraded to artful on 2017-11-05 (196 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1772425/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp