Security update for strongswan

Announcement ID: SUSE-SU-2026:21203-1
Release Date: 2026-04-16T09:06:50Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2025-9615 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • CVE-2025-9615 ( NVD ): 3.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  • 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:
  • SUSE Linux Enterprise Server 16.0
  • SUSE Linux Enterprise Server for SAP applications 16.0

An update that solves two vulnerabilities can now be installed.

Description:

This update for strongswan fixes the following issues:

Update to strongswan 6.0.4:

  • CVE-2025-9615: NetworkManager File Access (bsc#1257359).
  • CVE-2026-25075: Integer Underflow When Handling EAP-TTLS AVP (bsc#1259472).

Changes for strongswan:

  • Fixed a vulnerability in the NetworkManager plugin that potentially allows using credentials of other local users. This vulnerability has been registered as CVE-2025-9615.
  • The maximum supported length for section names in swanctl.conf has been increased to the upper limit of 256 characters that's enforced by VICI.
  • Prevent a crash if a confused peer rekeys a Child SA twice before sending a delete.
  • Fixed a memory leak if a peer's self-signed certificate is untrusted.

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 16.0
    zypper in -t patch SUSE-SLES-16.0-570=1
  • SUSE Linux Enterprise Server for SAP applications 16.0
    zypper in -t patch SUSE-SLES-16.0-570=1

Package List:

  • SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    • strongswan-sqlite-6.0.4-160000.1.1
    • strongswan-fips-6.0.4-160000.1.1
    • strongswan-6.0.4-160000.1.1
    • strongswan-ipsec-debuginfo-6.0.4-160000.1.1
    • strongswan-mysql-6.0.4-160000.1.1
    • strongswan-nm-6.0.4-160000.1.1
    • strongswan-ipsec-6.0.4-160000.1.1
    • strongswan-nm-debuginfo-6.0.4-160000.1.1
    • strongswan-sqlite-debuginfo-6.0.4-160000.1.1
    • strongswan-mysql-debuginfo-6.0.4-160000.1.1
    • strongswan-debugsource-6.0.4-160000.1.1
    • strongswan-debuginfo-6.0.4-160000.1.1
  • SUSE Linux Enterprise Server 16.0 (noarch)
    • strongswan-doc-6.0.4-160000.1.1
  • SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    • strongswan-sqlite-6.0.4-160000.1.1
    • strongswan-fips-6.0.4-160000.1.1
    • strongswan-6.0.4-160000.1.1
    • strongswan-ipsec-debuginfo-6.0.4-160000.1.1
    • strongswan-mysql-6.0.4-160000.1.1
    • strongswan-nm-6.0.4-160000.1.1
    • strongswan-ipsec-6.0.4-160000.1.1
    • strongswan-nm-debuginfo-6.0.4-160000.1.1
    • strongswan-sqlite-debuginfo-6.0.4-160000.1.1
    • strongswan-mysql-debuginfo-6.0.4-160000.1.1
    • strongswan-debugsource-6.0.4-160000.1.1
    • strongswan-debuginfo-6.0.4-160000.1.1
  • SUSE Linux Enterprise Server for SAP applications 16.0 (noarch)
    • strongswan-doc-6.0.4-160000.1.1

References: