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[Launchpad Bug Tracker <1864918@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package libvirt - 1.3.1-1ubuntu10.30

---------------
libvirt (1.3.1-1ubuntu10.30) xenial; urgency=medium

  * d/p/lp-1844455-node_device_conf-Don-t-leak-physical_function.patch:
    fix memory-leak from PCI-related structure. (LP: #1844455)
  * d/p/lp-1864918-Fix-TLS-test-suites-with-gnutls-3.6.0.patch: fix failing TLS
    tests due to recent-introduced SHA1 restriction in gnutls. (LP: #1864918)

 -- gpiccoli@xxxxxxxxxxxxx (Guilherme G. Piccoli)  Wed, 26 Feb 2020
13:23:18 -0300

** Changed in: libvirt (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1864918

Title:
  libvirt for Xenial failing to build due to gnutls SHA1 restriction

Status in libvirt package in Ubuntu:
  Fix Released
Status in libvirt source package in Xenial:
  Fix Released

Bug description:
  [Impact]

  * Since version 3.4.10-4ubuntu1.6 on Xenial, gnutls considers SHA1
  certificates to be insecure - this affects libvirt tests
  "virnettlscontexttest" and "virnettlssessiontest", preventing the
  correct build of the package.

  * The fix is available upstream since libvirt v3.7.0, as commit
  c666661bbc ("Fix TLS test suites with gnutls 3.6.0") [
  libvirt.org/git/?p=libvirt.git;a=commit;h=c666661b ], which uses
  SHA256 for the certificates generated on tests.

  [Test Case]

  * Basic testing consists is spin-up a PPA builder and try to build
  libvirt - it'll fail in amd64 and i386 architectures. With the
  proposed patch, it succeeds. Both failure and success buildlogs are
  attached in the LP.

  [Regression Potential]

  * The regression potential in this case is minimal, since it only
  affects testing. Also, this patch is present in all subsequent
  releases and is hereby introduced only in Xenial after the gnutls
  change (from version 3.6) was backported to Xenial as well.

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