==========================================================================
Ubuntu Security Notice USN-7570-1
June 16, 2025

python3.13, python3.12, python3.11, python3.10, python3.9, python3.8,
python3.7, python3.6 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04
- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Python could be made to crash or expose sensitive information.

Software Description:
- python3.13: An interactive high-level object-oriented language
- python3.12: An interactive high-level object-oriented language
- python3.10: An interactive high-level object-oriented language
- python3.11: An interactive high-level object-oriented language
- python3.8: An interactive high-level object-oriented language
- python3.9: An interactive high-level object-oriented language
- python3.6: An interactive high-level object-oriented language
- python3.7: An interactive high-level object-oriented language

Details:

It was discovered that Python incorrectly handled certain unicode
characters during decoding. An attacker could possibly use this issue to
cause a denial of service. (CVE-2025-4516)

It was discovered that Python incorrectly handled unicode encoding of email
headers with list separators in folded lines. An attacker could possibly
use this issue to expose sensitive information. (CVE-2025-1795)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.04
  libpython3.13                   3.13.3-1ubuntu0.1
  libpython3.13-minimal           3.13.3-1ubuntu0.1
  python3.13                      3.13.3-1ubuntu0.1
  python3.13-minimal              3.13.3-1ubuntu0.1

Ubuntu 24.10
  libpython3.12-minimal           3.12.7-1ubuntu2.1
  libpython3.12t64                3.12.7-1ubuntu2.1
  python3.12                      3.12.7-1ubuntu2.1
  python3.12-minimal              3.12.7-1ubuntu2.1

Ubuntu 24.04 LTS
  libpython3.12-minimal           3.12.3-1ubuntu0.6
  libpython3.12t64                3.12.3-1ubuntu0.6
  python3.12                      3.12.3-1ubuntu0.6
  python3.12-minimal              3.12.3-1ubuntu0.6

Ubuntu 22.04 LTS
  libpython3.10                   3.10.12-1~22.04.10
  libpython3.10-minimal           3.10.12-1~22.04.10
  libpython3.11                   3.11.0~rc1-1~22.04.1~esm4
                                  Available with Ubuntu Pro
  libpython3.11-minimal           3.11.0~rc1-1~22.04.1~esm4
                                  Available with Ubuntu Pro
  python3.10                      3.10.12-1~22.04.10
  python3.10-minimal              3.10.12-1~22.04.10
  python3.11                      3.11.0~rc1-1~22.04.1~esm4
                                  Available with Ubuntu Pro
  python3.11-minimal              3.11.0~rc1-1~22.04.1~esm4
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  libpython3.8                    3.8.10-0ubuntu1~20.04.18+esm1
                                  Available with Ubuntu Pro
  libpython3.8-minimal            3.8.10-0ubuntu1~20.04.18+esm1
                                  Available with Ubuntu Pro
  libpython3.9                    3.9.5-3ubuntu0~20.04.1+esm5
                                  Available with Ubuntu Pro
  libpython3.9-minimal            3.9.5-3ubuntu0~20.04.1+esm5
                                  Available with Ubuntu Pro
  python3.8                       3.8.10-0ubuntu1~20.04.18+esm1
                                  Available with Ubuntu Pro
  python3.8-minimal               3.8.10-0ubuntu1~20.04.18+esm1
                                  Available with Ubuntu Pro
  python3.9                       3.9.5-3ubuntu0~20.04.1+esm5
                                  Available with Ubuntu Pro
  python3.9-minimal               3.9.5-3ubuntu0~20.04.1+esm5
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libpython3.6                    3.6.9-1~18.04ubuntu1.13+esm5
                                  Available with Ubuntu Pro
  libpython3.6-minimal            3.6.9-1~18.04ubuntu1.13+esm5
                                  Available with Ubuntu Pro
  libpython3.7                    3.7.5-2ubuntu1~18.04.2+esm6
                                  Available with Ubuntu Pro
  libpython3.7-minimal            3.7.5-2ubuntu1~18.04.2+esm6
                                  Available with Ubuntu Pro
  libpython3.8                    3.8.0-3ubuntu1~18.04.2+esm5
                                  Available with Ubuntu Pro
  libpython3.8-minimal            3.8.0-3ubuntu1~18.04.2+esm5
                                  Available with Ubuntu Pro
  python3.6                       3.6.9-1~18.04ubuntu1.13+esm5
                                  Available with Ubuntu Pro
  python3.6-minimal               3.6.9-1~18.04ubuntu1.13+esm5
                                  Available with Ubuntu Pro
  python3.7                       3.7.5-2ubuntu1~18.04.2+esm6
                                  Available with Ubuntu Pro
  python3.7-minimal               3.7.5-2ubuntu1~18.04.2+esm6
                                  Available with Ubuntu Pro
  python3.8                       3.8.0-3ubuntu1~18.04.2+esm5
                                  Available with Ubuntu Pro
  python3.8-minimal               3.8.0-3ubuntu1~18.04.2+esm5
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7570-1
  CVE-2025-1795, CVE-2025-4516

Package Information:
  https://launchpad.net/ubuntu/+source/python3.13/3.13.3-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/python3.12/3.12.7-1ubuntu2.1
  https://launchpad.net/ubuntu/+source/python3.12/3.12.3-1ubuntu0.6