SUSE-SU-2026:4147-1: important: Security update for strongswan

SLE-SECURITY-UPDATES null at suse.de
Mon Sep 14 12:38:01 UTC 2026 

# Security update for strongswan

Announcement ID: SUSE-SU-2026:4147-1  
Release Date: 2026-09-14T08:01:21Z  
Rating: important  
References:

  * bsc#1276533
  * bsc#1276534
  * bsc#1276536
  * bsc#1276539
  * bsc#1276540
  * bsc#1276541
  * bsc#1276543

  
Cross-References:

  * CVE-2026-78123
  * CVE-2026-78124
  * CVE-2026-78126
  * CVE-2026-78127
  * CVE-2026-78129
  * CVE-2026-78130
  * CVE-2026-78131

  
CVSS scores:

  * CVE-2026-78123 ( 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-2026-78123 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78123 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78124 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-78124 ( SUSE ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78124 ( NVD ):  3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-78126 ( 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-2026-78126 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78126 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78127 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-78127 ( SUSE ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78127 ( NVD ):  3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-78129 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-78129 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-78129 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78130 ( 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-2026-78130 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78130 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78131 ( 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-2026-78131 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-78131 ( NVD ):  3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

  
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 seven vulnerabilities can now be installed.

## Description:

This update for strongswan fixes the following issues:

  * CVE-2026-78123: Undefined Memory Access When Handling PKCS#7 Containers
    (bsc#1276533).
  * CVE-2026-78124: Memory Leak When Processing Certificates in PKCS#7
    Containers (bsc#1276534).
  * CVE-2026-78126: NULL-Pointer Dereference When Handling AKA-Synchronization-
    Failure (bsc#1276536).
  * CVE-2026-78127: Memory Leak During Message Stringification (bsc#1276539).
  * CVE-2026-78129: Unbounded Iteration When Decrypting PKCS#7 Containers
    (bsc#1276540).
  * CVE-2026-78130: NULL-Pointer Dereference in Attribute Certificate Validation
    (bsc#1276541).
  * CVE-2026-78131: Memory Leaks When Parsing Attribute Certificates
    (bsc#1276543).

## 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-2026-4147

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-4147

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * strongswan-debugsource-5.1.3-26.43.2
    * strongswan-ipsec-debuginfo-5.1.3-26.43.2
    * strongswan-ipsec-5.1.3-26.43.2
    * strongswan-5.1.3-26.43.2
    * strongswan-libs0-debuginfo-5.1.3-26.43.2
    * strongswan-hmac-5.1.3-26.43.2
    * strongswan-libs0-5.1.3-26.43.2
  * SUSE Linux Enterprise Server 12 SP5 LTSS (noarch)
    * strongswan-doc-5.1.3-26.43.2
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * strongswan-debugsource-5.1.3-26.43.2
    * strongswan-ipsec-debuginfo-5.1.3-26.43.2
    * strongswan-ipsec-5.1.3-26.43.2
    * strongswan-5.1.3-26.43.2
    * strongswan-libs0-debuginfo-5.1.3-26.43.2
    * strongswan-hmac-5.1.3-26.43.2
    * strongswan-libs0-5.1.3-26.43.2
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch)
    * strongswan-doc-5.1.3-26.43.2

## References:

  * https://www.suse.com/security/cve/CVE-2026-78123.html
  * https://www.suse.com/security/cve/CVE-2026-78124.html
  * https://www.suse.com/security/cve/CVE-2026-78126.html
  * https://www.suse.com/security/cve/CVE-2026-78127.html
  * https://www.suse.com/security/cve/CVE-2026-78129.html
  * https://www.suse.com/security/cve/CVE-2026-78130.html
  * https://www.suse.com/security/cve/CVE-2026-78131.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1276533
  * https://bugzilla.suse.com/show_bug.cgi?id=1276534
  * https://bugzilla.suse.com/show_bug.cgi?id=1276536
  * https://bugzilla.suse.com/show_bug.cgi?id=1276539
  * https://bugzilla.suse.com/show_bug.cgi?id=1276540
  * https://bugzilla.suse.com/show_bug.cgi?id=1276541
  * https://bugzilla.suse.com/show_bug.cgi?id=1276543

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