[Bug 1775162] [NEW] libgnutls30 3.4.10 segfaults with knot-resolver 2.3

[Ondrej Vasko]

Public bug reported:

Activating DNS over TLS in knot-resolver 2.3.0-1 with Ubuntu 16.04
(Xenial) and libgnutls 3.4.10 results in segmentation fault (double
free).

Upstream bug in Knot-resolver is filled here
(https://gitlab.labs.nic.cz/knot/knot-resolver/issues/365). Discussion
with developers lead us to bug in gnutls, which was patched in version
3.5.5 (https://gitlab.com/gnutls/gnutls/blob/gnutls_3_6_2/NEWS#L413).

Test with same configuration on Ubuntu 18 (Bionic), where version of
libgnutls30:amd64 is 3.5.18-1ubuntu1 works good.

Please consider update to newer minor version of GNUTLS.

** Affects: gnutls28 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: gnutls knot knot-resolver libgnutls

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https://bugs.launchpad.net/bugs/1775162

Title:
  libgnutls30 3.4.10 segfaults with knot-resolver 2.3

Status in gnutls28 package in Ubuntu:
  New

Bug description:
  Activating DNS over TLS in knot-resolver 2.3.0-1 with Ubuntu 16.04
  (Xenial) and libgnutls 3.4.10 results in segmentation fault (double
  free).

  Upstream bug in Knot-resolver is filled here
  (https://gitlab.labs.nic.cz/knot/knot-resolver/issues/365). Discussion
  with developers lead us to bug in gnutls, which was patched in version
  3.5.5 (https://gitlab.com/gnutls/gnutls/blob/gnutls_3_6_2/NEWS#L413).

  Test with same configuration on Ubuntu 18 (Bionic), where version of
  libgnutls30:amd64 is 3.5.18-1ubuntu1 works good.

  Please consider update to newer minor version of GNUTLS.

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