Security update for python-tornado

Announcement ID:	SUSE-SU-2026:0222-1
Release Date:	2026-01-22T12:17:37Z
Rating:	important
References:	bsc#1254904 bsc#1254905
Cross-References:	CVE-2025-67725 CVE-2025-67726
CVSS scores:	CVE-2025-67725 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2025-67725 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2025-67725 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2025-67726 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2025-67726 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2025-67726 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:	Basesystem Module 15-SP7 SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise High Performance Computing 15 SP5 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 SUSE Linux Enterprise Micro 5.2 SUSE Linux Enterprise Micro 5.3 SUSE Linux Enterprise Micro 5.4 SUSE Linux Enterprise Micro 5.5 SUSE Linux Enterprise Micro for Rancher 5.2 SUSE Linux Enterprise Micro for Rancher 5.3 SUSE Linux Enterprise Micro for Rancher 5.4 SUSE Linux Enterprise Real Time 15 SP7 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server 15 SP4 LTSS SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server 15 SP5 LTSS SUSE Linux Enterprise Server 15 SP6 SUSE Linux Enterprise Server 15 SP6 LTSS SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP5 SUSE Linux Enterprise Server for SAP Applications 15 SP6 SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves two vulnerabilities can now be installed.

Description:

This update for python-tornado fixes the following issues:

• CVE-2025-67725: inefficient algorithm when parsing parameters for HTTP header values (bsc#1254905).
• CVE-2025-67726: Denial of Service (DoS) via maliciously crafted HTTP request caused by the HTTPHeaders.add method (bsc#1254904).

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

• SUSE Linux Enterprise Micro for Rancher 5.3
  zypper in -t patch SUSE-SLE-Micro-5.3-2026-222=1
• SUSE Linux Enterprise Micro 5.3
  zypper in -t patch SUSE-SLE-Micro-5.3-2026-222=1
• SUSE Linux Enterprise Micro for Rancher 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2026-222=1
• SUSE Linux Enterprise Micro 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2026-222=1
• SUSE Linux Enterprise Micro 5.5
  zypper in -t patch SUSE-SLE-Micro-5.5-2026-222=1
• Basesystem Module 15-SP7
  zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-222=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-222=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-222=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-222=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-222=1
• SUSE Linux Enterprise Server 15 SP4 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-222=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-222=1
• SUSE Linux Enterprise Server 15 SP6 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-222=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-222=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-222=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP6
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-222=1
• SUSE Linux Enterprise Micro 5.2
  zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-222=1
• SUSE Linux Enterprise Micro for Rancher 5.2
  zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-222=1

Package List:

• SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Micro 5.2 (aarch64 s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1
• SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 s390x x86_64)
  • python-tornado-debuginfo-4.5.3-150000.3.13.1
  • python3-tornado-4.5.3-150000.3.13.1
  • python3-tornado-debuginfo-4.5.3-150000.3.13.1
  • python-tornado-debugsource-4.5.3-150000.3.13.1

References:

• https://www.suse.com/security/cve/CVE-2025-67725.html
• https://www.suse.com/security/cve/CVE-2025-67726.html
• https://bugzilla.suse.com/show_bug.cgi?id=1254904
• https://bugzilla.suse.com/show_bug.cgi?id=1254905