Ubuntu 25.10 Python Security Fixes for Critical Issues 2025-11468
ubuntu
February 5, 2026
Several security issues were fixed in Python.
Summary
Several security issues were fixed in Python.
Software Description:
- python3.13: An interactive high-level object-oriented language
- python3.14: 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
- python3.5: An interactive high-level object-oriented language
- python3.4: An interactive high-level object-oriented language
Details:
Denis Ledoux discovered that Python incorrectly parsed email message
headers. An attacker could possibly use this issue to inject arbitrary
headers into email messages. This issue only affected python3.6, py...
Topics Covered
Update Instructions
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
idle-python3.13 3.13.7-1ubuntu0.3
idle-python3.14 3.14.0-1ubuntu0.2
libpython3.13 3.13.7-1ubuntu0.3
libpython3.13-dev 3.13.7-1ubuntu0.3
libpython3.13-minimal 3.13.7-1ubuntu0.3
libpython3.13-stdlib 3.13.7-1ubuntu0.3
libpython3.13-testsuite 3.13.7-1ubuntu0.3
libpython3.14 3.14.0-1ubuntu0.2
libpython3.14-dev 3.14.0-1ubuntu0.2
libpython3.14-minimal 3.14.0-1ubuntu0.2
libpython3.14-stdlib 3.14.0-1ubuntu0.2
libpython3.14-testsuite 3.14.0-1ubuntu0.2
python3.13 3.13.7-1ubuntu0.3
python3.13-dev 3.13.7-1ubuntu0.3
python3.13-doc 3.13.7-1ubuntu0.3
python3.13-examples 3.13.7-1ubuntu0.3
python3.13-full 3.13.7-1ubuntu0.3
python3.13-gdbm 3.13.7-1ubuntu0.3
python3.13-minimal 3.13.7-1ubuntu0.3
python3.13-nopie 3.13.7-1ubuntu0.3
python3.13-tk 3.13.7-1ubuntu0.3
python3.13-venv 3.13.7-1ubuntu0.3
python3.14 3.14.0-1ubuntu0.2
python3.14-dev 3.14.0-1ubuntu0.2
python3.14-doc 3.14.0-1ubuntu0.2
python3.14-examples 3.14.0-1ubuntu0.2
python3.14-full 3.14.0-1ubuntu0.2
python3.14-gdbm 3.14.0-1ubuntu0.2
python3.14-minimal 3.14.0-1ubuntu0.2
python3.14-nopie 3.14.0-1ubuntu0.2
python3.14-tk 3.14.0-1ubuntu0.2
python3.14-venv 3.14.0-1ubuntu0.2
Ubuntu 24.04 LTS
idle-python3.12 3.12.3-1ubuntu0.11
libpython3.12-dev 3.12.3-1ubuntu0.11
libpython3.12-minimal 3.12.3-1ubuntu0.11
libpython3.12-stdlib 3.12.3-1ubuntu0.11
libpython3.12-testsuite 3.12.3-1ubuntu0.11
libpython3.12t64 3.12.3-1ubuntu0.11
python3.12 3.12.3-1ubuntu0.11
python3.12-dev 3.12.3-1ubuntu0.11
python3.12-doc 3.12.3-1ubuntu0.11
python3.12-examples 3.12.3-1ubuntu0.11
python3.12-full 3.12.3-1ubuntu0.11
python3.12-minimal 3.12.3-1ubuntu0.11
python3.12-nopie 3.12.3-1ubuntu0.11
python3.12-venv 3.12.3-1ubuntu0.11
Ubuntu 22.04 LTS
idle-python3.10 3.10.12-1~22.04.14
idle-python3.11 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
libpython3.10 3.10.12-1~22.04.14
libpython3.10-dev 3.10.12-1~22.04.14
libpython3.10-minimal 3.10.12-1~22.04.14
libpython3.10-stdlib 3.10.12-1~22.04.14
libpython3.10-testsuite 3.10.12-1~22.04.14
libpython3.11 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
libpython3.11-dev 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
libpython3.11-minimal 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
libpython3.11-stdlib 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
libpython3.11-testsuite 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
python3.10 3.10.12-1~22.04.14
python3.10-dev 3.10.12-1~22.04.14
python3.10-doc 3.10.12-1~22.04.14
python3.10-examples 3.10.12-1~22.04.14
python3.10-full 3.10.12-1~22.04.14
python3.10-minimal 3.10.12-1~22.04.14
python3.10-nopie 3.10.12-1~22.04.14
python3.10-venv 3.10.12-1~22.04.14
python3.11 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
python3.11-dev 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
python3.11-doc 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
python3.11-examples 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
python3.11-full 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
python3.11-minimal 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
python3.11-nopie 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
python3.11-venv 3.11.0~rc1-1~22.04.1~esm8
Available with Ubuntu Pro
Ubuntu 20.04 LTS
idle-python3.8 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
idle-python3.9 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
libpython3.8 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
libpython3.8-dev 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
libpython3.8-minimal 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
libpython3.8-stdlib 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
libpython3.8-testsuite 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
libpython3.9 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
libpython3.9-dev 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
libpython3.9-minimal 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
libpython3.9-stdlib 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
libpython3.9-testsuite 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
python3.8 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
python3.8-dev 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
python3.8-doc 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
python3.8-examples 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
python3.8-full 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
python3.8-minimal 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
python3.8-venv 3.8.10-0ubuntu1~20.04.18+esm5
Available with Ubuntu Pro
python3.9 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
python3.9-dev 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
python3.9-doc 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
python3.9-examples 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
python3.9-full 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
python3.9-minimal 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
python3.9-venv 3.9.5-3ubuntu0~20.04.1+esm9
Available with Ubuntu Pro
Ubuntu 18.04 LTS
idle-python3.6 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
idle-python3.7 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
idle-python3.8 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.6 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
libpython3.6-dev 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
libpython3.6-minimal 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
libpython3.6-stdlib 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
libpython3.6-testsuite 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
libpython3.7 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.7-dev 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.7-minimal 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.7-stdlib 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.7-testsuite 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.8 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.8-dev 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.8-minimal 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.8-stdlib 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
libpython3.8-testsuite 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.6 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
python3.6-dev 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
python3.6-doc 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
python3.6-examples 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
python3.6-minimal 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
python3.6-venv 3.6.9-1~18.04ubuntu1.13+esm8
Available with Ubuntu Pro
python3.7 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.7-dev 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.7-doc 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.7-examples 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.7-minimal 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.7-venv 3.7.5-2ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.8 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.8-dev 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.8-examples 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.8-minimal 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
python3.8-venv 3.8.0-3ubuntu1~18.04.2+esm9
Available with Ubuntu Pro
Ubuntu 16.04 LTS
idle-python3.5 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
libpython3.5 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
libpython3.5-dev 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
libpython3.5-minimal 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
libpython3.5-stdlib 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
libpython3.5-testsuite 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
python3.5 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
python3.5-dev 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
python3.5-doc 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
python3.5-examples 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
python3.5-minimal 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
python3.5-venv 3.5.2-2ubuntu0~16.04.13+esm21
Available with Ubuntu Pro
Ubuntu 14.04 LTS
idle-python3.4 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
idle-python3.5 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
libpython3.4 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
libpython3.4-dev 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
libpython3.4-minimal 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
libpython3.4-stdlib 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
libpython3.4-testsuite 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
libpython3.5 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
libpython3.5-dev 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
libpython3.5-minimal 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
libpython3.5-stdlib 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
libpython3.5-testsuite 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
python3.4 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
python3.4-dev 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
python3.4-doc 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
python3.4-examples 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
python3.4-minimal 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
python3.4-venv 3.4.3-1ubuntu1~14.04.7+esm19
Available with Ubuntu Pro
python3.5 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
python3.5-dev 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
python3.5-doc 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
python3.5-examples 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
python3.5-minimal 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
python3.5-venv 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.References
https://ubuntu.com/security/notices/USN-8018-1
CVE-2025-11468, CVE-2025-12084, CVE-2025-13837, CVE-2025-15282,
CVE-2025-15366, CVE-2025-15367, CVE-2026-0672, CVE-2026-0865
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Ubuntu Security Notice USN-8018-1
Topics Covered
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