This bug was fixed in the package python3.9 - 3.9.5-3~20.04.1

---------------
python3.9 (3.9.5-3~20.04.1) focal; urgency=medium

  * SRU: LP: #1899159: Backport Python 3.9.5 to 20.04 LTS.
  * Adjust python3-tk autopkg test dependency to the version found
    in the release.

python3.9 (3.9.5-3) experimental; urgency=medium

  * Tighten python3-tk autopkg test dependency.
  * Try to detect whether python3-venv is missing (Stefano Rivera).
    Closes: #977887.

python3.9 (3.9.5-2) experimental; urgency=medium

  * Re-add the dependency on libdb-dev.  With Python 3.10, building
    the _dbm extension using libgdbm-compat-dev, and moving the _dbm
    extension into the python3-gdbm package.
  * Call python with -S when checking the minimal set of modules.

python3.9 (3.9.5-1) experimental; urgency=medium

  * Python 3.9.5 release.
  * Refresh patches.
  * Drop the unused build dependency on libdb-dev.

python3.9 (3.9.4-1) experimental; urgency=medium

  * Python 3.9.4 release.

python3.9 (3.9.3-2) experimental; urgency=high

  * Fix flags substitutions for _sysconfigdata.
  * Revert the fix for issue #42500, breaking ABI on 32bit architectures.

python3.9 (3.9.3-1) experimental; urgency=medium

  * Python 3.9.3 release.
    - Fix issue #42988: CVE-2021-3426: Remove the getfile feature of the
      pydoc module which could be abused to read arbitrary files on the
      disk (directory traversal vulnerability).
    - Other security issues without a CVE.
    - Other fixes. See the NEWS file.
  * Move zlib1g-dev dependency to libpython3.9-dev. Closes: #984580.
  * Configure with --libdir=/usr/lib/$(DEB_HOST_MULTIARCH), recording the
    correct LIBDIR in _sysconfigdata.  Also adjust DESTSHARED to install
    lib-dynload into the same location as before the configure change.
    See issue #43229.

python3.9 (3.9.2-1) unstable; urgency=medium

  * Python 3.9.2 release. No changes since 3.9.2~rc1-1.
  * Build idlelib/help.html from source, don't ship the pre-generated file.
  * Autopkg tests:
    - Run testsuite{,-dbg} autopkg tests with allow-stderr. Closes: #983305.
    - Run again in testsuite instead of failing-tests: test_ftplib,
      test_httplib test_imaplib test_nntplib test_poplib test_ssl.
    - Run test_distutils and test_site tests again.

python3.9 (3.9.2~rc1-1) experimental; urgency=medium

  * Python 3.9.2 release candidate 1. Changes since 3.9.1-4:
    - Fix issue #42967, web cache poisoning vulnerability.
    - Fix issue #42938, explicitly disable bracketed paste in the interactive
      interpreter. Closes: #979154.
  * Fix permissions and group for local directories. Closes: #962422.
  * Build a python3.9-full package.
  * idle-python3.9: Drop dependency on libjs-mathjax, unused in 3.8 and 3.9.
  * python3.9-doc: Fix links to the documentation in /usr/share/doc/python3.9.
  * Refresh patches.

python3.9 (3.9.1-4) unstable; urgency=medium

  * Update to the 3.9 branch 2021-02-04.
  * Fix issue #43030, compiler warning in Py_UNICODE_ISSPACE with
    signed wchar_t. Closes: #961396.
  * Depend on media-types instead of mime-support. Closes: #981016.
  * Fix permissions and group for local directories. Closes: #962422.

python3.9 (3.9.1-3) unstable; urgency=medium

  * Update to the 3.9 branch 2021-01-20.
  * Configure again --with-system-libmpdec.
  * Update symbols files.

python3.9 (3.9.1-2) unstable; urgency=medium

  * Update to the 3.9 branch 2021-01-10.

python3.9 (3.9.1-1) unstable; urgency=medium

  * Python 3.9.1 release.

python3.9 (3.9.1~rc1-2) unstable; urgency=medium

  * Don't expect the test_ttk_textonly test to pass.

python3.9 (3.9.1~rc1-1) unstable; urgency=medium

  * Python 3.9.1 release candidate 1.
  * libpython3.9-stdlib: Depend on tzdata, recommend ca-certificates.
  * libpython3.9-stdlib: Depend on media-types | mime-support instead of
    mime-support.
  * Update VCS attributes.
  * Add python3-tk test dependency for the failing-tests* autopkg tests.
  * Bump standards version.
  * Add build conflict with git, or else the git information of the packaging
    is encoded in the upstream version information.
  * Build with -fno-inline-small-functions on hppa and sh4.
    Closes: #972458, #972202.

 -- Matthias Klose <email address hidden>  Wed, 19 May 2021 13:32:47 +0200