SUSE-SU-2025:0740-1: moderate: Security update for libX11

[SLE-SECURITY-UPDATES]

# Security update for libX11

Announcement ID: SUSE-SU-2025:0740-1  
Release Date: 2025-02-28T10:10:32Z  
Rating: moderate  
References:

  * bsc#1237431

  
Cross-References:

  * CVE-2025-26597

  
CVSS scores:

  * CVE-2025-26597 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2025-26597 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  * CVE-2025-26597 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for libX11 fixes the following issues:

  * CVE-2025-26597: improper resizing of key actions when nGroups is 0 can lead
    to buffer overflows in XkbChangeTypesOfKey() (bsc#1237431).

## 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 Server 12 SP5 LTSS  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2025-740=1

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2025-740=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * libX11-xcb1-1.6.2-12.36.1
    * libX11-debugsource-1.6.2-12.36.1
    * libX11-6-debuginfo-1.6.2-12.36.1
    * libX11-devel-1.6.2-12.36.1
    * libX11-xcb1-debuginfo-1.6.2-12.36.1
    * libX11-6-1.6.2-12.36.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS (noarch)
    * libX11-data-1.6.2-12.36.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS (s390x x86_64)
    * libX11-xcb1-debuginfo-32bit-1.6.2-12.36.1
    * libX11-6-32bit-1.6.2-12.36.1
    * libX11-xcb1-32bit-1.6.2-12.36.1
    * libX11-6-debuginfo-32bit-1.6.2-12.36.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * libX11-xcb1-1.6.2-12.36.1
    * libX11-debugsource-1.6.2-12.36.1
    * libX11-6-debuginfo-1.6.2-12.36.1
    * libX11-6-32bit-1.6.2-12.36.1
    * libX11-xcb1-debuginfo-32bit-1.6.2-12.36.1
    * libX11-devel-1.6.2-12.36.1
    * libX11-xcb1-debuginfo-1.6.2-12.36.1
    * libX11-6-1.6.2-12.36.1
    * libX11-xcb1-32bit-1.6.2-12.36.1
    * libX11-6-debuginfo-32bit-1.6.2-12.36.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch)
    * libX11-data-1.6.2-12.36.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-26597.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1237431

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