SUSE-SU-2026:0623-1: important: Security update for python-tornado

[SLE-SECURITY-UPDATES]

# Security update for python-tornado

Announcement ID: SUSE-SU-2026:0623-1  
Release Date: 2026-02-25T09:15:13Z  
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:

  * SUSE Linux Enterprise Desktop 12
  * SUSE Linux Enterprise Desktop 12 SP1
  * SUSE Linux Enterprise Desktop 12 SP2
  * SUSE Linux Enterprise Desktop 12 SP3
  * SUSE Linux Enterprise Desktop 12 SP4
  * SUSE Linux Enterprise High Performance Computing 12 SP2
  * SUSE Linux Enterprise High Performance Computing 12 SP3
  * SUSE Linux Enterprise High Performance Computing 12 SP4
  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12
  * SUSE Linux Enterprise Server 12 SP1
  * SUSE Linux Enterprise Server 12 SP2
  * SUSE Linux Enterprise Server 12 SP3
  * SUSE Linux Enterprise Server 12 SP4
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server for SAP Applications 12
  * SUSE Linux Enterprise Server for SAP Applications 12 SP1
  * SUSE Linux Enterprise Server for SAP Applications 12 SP2
  * SUSE Linux Enterprise Server for SAP Applications 12 SP3
  * SUSE Linux Enterprise Server for SAP Applications 12 SP4
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5
  * SUSE Linux Enterprise Server for the Raspberry Pi 12-SP2
  * SUSE Manager Client Tools for SLE 12

  
  
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 Manager Client Tools for SLE 12  
    zypper in -t patch SUSE-SLE-Manager-Tools-12-2026-623=1

## Package List:

  * SUSE Manager Client Tools for SLE 12 (aarch64 ppc64le s390x x86_64)
    * python-tornado-4.2.1-17.13.1
    * python3-tornado-4.2.1-17.13.1
    * python-tornado-debuginfo-4.2.1-17.13.1
    * python-tornado-debugsource-4.2.1-17.13.1

## 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

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