SUSE-SU-2026:0979-1: important: Security update for strongswan

[SLE-SECURITY-UPDATES]

# Security update for strongswan

Announcement ID: SUSE-SU-2026:0979-1  
Release Date: 2026-03-23T16:46:36Z  
Rating: important  
References:

  * bsc#1259472

  
Cross-References:

  * CVE-2026-25075

  
CVSS scores:

  * CVE-2026-25075 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-25075 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-25075 ( NVD ):  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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-25075 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for strongswan fixes the following issues:

  * CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP
    (bsc#1259472).

## 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 SUSE-2026-979=1 openSUSE-SLE-15.6-2026-979=1

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-979=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-979=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
    * strongswan-debuginfo-5.9.12-150600.3.11.1
    * strongswan-ipsec-5.9.12-150600.3.11.1
    * strongswan-nm-debuginfo-5.9.12-150600.3.11.1
    * strongswan-debugsource-5.9.12-150600.3.11.1
    * strongswan-ipsec-debuginfo-5.9.12-150600.3.11.1
    * strongswan-5.9.12-150600.3.11.1
    * strongswan-libs0-5.9.12-150600.3.11.1
    * strongswan-mysql-5.9.12-150600.3.11.1
    * strongswan-nm-5.9.12-150600.3.11.1
    * strongswan-sqlite-5.9.12-150600.3.11.1
    * strongswan-mysql-debuginfo-5.9.12-150600.3.11.1
    * strongswan-sqlite-debuginfo-5.9.12-150600.3.11.1
    * strongswan-hmac-5.9.12-150600.3.11.1
    * strongswan-libs0-debuginfo-5.9.12-150600.3.11.1
  * openSUSE Leap 15.6 (noarch)
    * strongswan-doc-5.9.12-150600.3.11.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
    * strongswan-debuginfo-5.9.12-150600.3.11.1
    * strongswan-ipsec-5.9.12-150600.3.11.1
    * strongswan-debugsource-5.9.12-150600.3.11.1
    * strongswan-ipsec-debuginfo-5.9.12-150600.3.11.1
    * strongswan-5.9.12-150600.3.11.1
    * strongswan-libs0-5.9.12-150600.3.11.1
    * strongswan-hmac-5.9.12-150600.3.11.1
    * strongswan-libs0-debuginfo-5.9.12-150600.3.11.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
    * strongswan-doc-5.9.12-150600.3.11.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
    * strongswan-debuginfo-5.9.12-150600.3.11.1
    * strongswan-ipsec-5.9.12-150600.3.11.1
    * strongswan-debugsource-5.9.12-150600.3.11.1
    * strongswan-ipsec-debuginfo-5.9.12-150600.3.11.1
    * strongswan-5.9.12-150600.3.11.1
    * strongswan-libs0-5.9.12-150600.3.11.1
    * strongswan-hmac-5.9.12-150600.3.11.1
    * strongswan-libs0-debuginfo-5.9.12-150600.3.11.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
    * strongswan-doc-5.9.12-150600.3.11.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-25075.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1259472

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