This bug was fixed in the package vte2.91 - 0.52.2-1ubuntu1

---------------
vte2.91 (0.52.2-1ubuntu1) cosmic; urgency=medium

  [ Iain Lane ]
  * Merge with Debian. Remaining changes:
    - debian/rules:
      + Use --without-pcre2
    - Add revert-pcre2.patch:
      + Revert changes that require PCRE2 since it's not in main
        (see MIR #163666)
    - Add 91_keep_fds.patch since gdebi still requires it (LP: #1756238)
    - 0001-Add-the-style-context-provider-with-FALLBACK-priorit.patch:
      + Keep as it is required for the Ubuntu theming
  * debian/gbp.conf: Update for Ubuntu

   [ Rico Tzschichholz ]
   * revert-pcre2.patch:
     - Don't revert unrelated g-i annotation changes to avoid unnecessary
       gir/vapi API changes compared to upstream (LP: #1765389)
  * revert-pcre2.patch: Refresh, fix a conflict.
  * debian/control{,.in}: Update Vcs-* for LP git

vte2.91 (0.52.2-1) unstable; urgency=medium

  [ Iain Lane ]
  * New upstream release 0.52.2 (LP: #1774167):
    + [5966e8b] ring: Proper boundary checking for hyperlink position.
      This fixes a rare crash around hyperlinks in a non grid aligned VTE
      widget when the mouse enters the extra padding at the bottom. (LP:
      #1772506)
    + [7322c27] all: Fix spelling

 -- Iain Lane <[email protected]>  Wed, 30 May 2018 13:09:28 +0100

** Changed in: vte2.91 (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1772506

Title:
  Crash related to hyperlinks

Status in vte2.91 package in Ubuntu:
  Fix Released
Status in vte2.91 source package in Bionic:
  In Progress

Bug description:
  [ Description ]

  A crash was discovered recently in VTE, triggered by the combination
  of explicit hyperlinks (a new feature of vte-0.50) and a non-aligned
  window size (e.g. Tilix, or maximized GNOME Terminal) due to a missing
  trivial boundary check.

  Since GNOME Terminal handles all of its terminals in a single process,
  a crash causes all its terminals to disappear, making the consequences
  even worse.

  Mainstream bugreport with technical details and steps to reproduce:
  https://bugzilla.gnome.org/show_bug.cgi?id=795826

  Fix (for vte-0.52.x):
  https://git.gnome.org/browse/vte/commit/?h=vte-0-52&id=5966e8bfb

  Bionic ships 0.52.1. Mainstream 0.52.2 has been released with this
  code change only (apart from the version as reported by VTE itself),
  so instead of patching you could probably just simply bump the version
  number.

  Older Ubuntu release are unaffected, since they didn't yet have
  support for explicit hyperlinks.

  Jeremy & others, could you please release a fixed package as an update
  for Bionic LTS? Thanks a lot!

  [ QA ]

  Under the GNOME micro release exception, you can believe this bug is
  fixed. Please just test as outlined in bug #1774167

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: libvte-2.91-0 0.52.1-1ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CurrentDesktop: Unity:Unity7:ubuntu
  Date: Mon May 21 22:06:38 2018
  InstallationDate: Installed on 2016-11-09 (557 days ago)
  InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
  SourcePackage: vte2.91
  UpgradeStatus: Upgraded to bionic on 2018-03-14 (67 days ago)

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