SUSE-SU-2025:4426-1: moderate: Security update for xkbcomp

[SLE-SECURITY-UPDATES]

# Security update for xkbcomp

Announcement ID: SUSE-SU-2025:4426-1  
Release Date: 2025-12-17T11:22:48Z  
Rating: moderate  
References:

  * bsc#1105832

  
Cross-References:

  * CVE-2018-15853
  * CVE-2018-15859
  * CVE-2018-15861
  * CVE-2018-15863

  
CVSS scores:

  * CVE-2018-15853 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2018-15853 ( SUSE ):  3.3 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2018-15853 ( NVD ):  5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2018-15859 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2018-15859 ( SUSE ):  3.3 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2018-15859 ( NVD ):  5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2018-15861 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2018-15861 ( SUSE ):  3.3 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2018-15861 ( NVD ):  5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2018-15863 ( SUSE ):  3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2018-15863 ( SUSE ):  3.3 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2018-15863 ( NVD ):  5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * Basesystem Module 15-SP6
  * Basesystem Module 15-SP7
  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for xkbcomp fixes the following issues:

  * CVE-2018-15863: NULL pointer dereference triggered by a a crafted keymap
    file with a no-op modmask expression can lead to a crash (bsc#1105832).
  * CVE-2018-15861: NULL pointer dereference triggered by a crafted keymap file
    that induces an `xkb_intern_atom` failure can lead to a crash (bsc#1105832).
  * CVE-2018-15859: NULL pointer dereference triggered by a specially a crafted
    keymap file can lead to a crash (bsc#1105832).
  * CVE-2018-15853: endless recursion triggered by a crafted keymap file that
    induces boolean negation can lead to a crash (bsc#1105832).

## 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:

  * openSUSE Leap 15.6  
    zypper in -t patch openSUSE-SLE-15.6-2025-4426=1

  * Basesystem Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2025-4426=1

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2025-4426=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    * xkbcomp-devel-1.4.1-150000.3.6.1
    * xkbcomp-1.4.1-150000.3.6.1
    * xkbcomp-debugsource-1.4.1-150000.3.6.1
    * xkbcomp-debuginfo-1.4.1-150000.3.6.1
  * Basesystem Module 15-SP6 (aarch64 ppc64le s390x x86_64)
    * xkbcomp-devel-1.4.1-150000.3.6.1
    * xkbcomp-1.4.1-150000.3.6.1
    * xkbcomp-debugsource-1.4.1-150000.3.6.1
    * xkbcomp-debuginfo-1.4.1-150000.3.6.1
  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * xkbcomp-devel-1.4.1-150000.3.6.1
    * xkbcomp-1.4.1-150000.3.6.1
    * xkbcomp-debugsource-1.4.1-150000.3.6.1
    * xkbcomp-debuginfo-1.4.1-150000.3.6.1

## References:

  * https://www.suse.com/security/cve/CVE-2018-15853.html
  * https://www.suse.com/security/cve/CVE-2018-15859.html
  * https://www.suse.com/security/cve/CVE-2018-15861.html
  * https://www.suse.com/security/cve/CVE-2018-15863.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1105832

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