Security update for strongswan

Announcement ID: SUSE-SU-2026:1762-1
Release Date: 2026-05-08T08:58:30Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-35329 ( 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-2026-35329 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2026-35330 ( SUSE ): 9.2 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • CVE-2026-35330 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-35331 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  • CVE-2026-35331 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  • CVE-2026-35332 ( 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-2026-35332 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2026-35333 ( 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-2026-35333 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2026-35334 ( 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-2026-35334 ( SUSE ): 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 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 six vulnerabilities can now be installed.

Description:

This update for strongswan fixes the following issues:

  • CVE-2026-35329: NULL pointer dereference when processing padding in PKCS#7 (bsc#1261717).
  • CVE-2026-35330: integer underflow when handling EAP-SIM/AKA attributes (bsc#1261705).
  • CVE-2026-35331: acceptance of certificates violating X.509 name constraints (bsc#1261718).
  • CVE-2026-35332: NULL pointer dereference when handling ECDH public value in TLS (bsc#1261708).
  • CVE-2026-35333: integer underflow when handling RADIUS attributes (bsc#1261706).
  • CVE-2026-35334: possible NULL pointer dereference in RSA decryption (bsc#1261720).

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-2026-1762=1
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1762=1

Package List:

  • SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    • strongswan-libs0-5.1.3-26.35.1
    • strongswan-hmac-5.1.3-26.35.1
    • strongswan-ipsec-5.1.3-26.35.1
    • strongswan-ipsec-debuginfo-5.1.3-26.35.1
    • strongswan-5.1.3-26.35.1
    • strongswan-debugsource-5.1.3-26.35.1
    • strongswan-libs0-debuginfo-5.1.3-26.35.1
  • SUSE Linux Enterprise Server 12 SP5 LTSS (noarch)
    • strongswan-doc-5.1.3-26.35.1
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    • strongswan-libs0-5.1.3-26.35.1
    • strongswan-hmac-5.1.3-26.35.1
    • strongswan-ipsec-5.1.3-26.35.1
    • strongswan-ipsec-debuginfo-5.1.3-26.35.1
    • strongswan-5.1.3-26.35.1
    • strongswan-debugsource-5.1.3-26.35.1
    • strongswan-libs0-debuginfo-5.1.3-26.35.1
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch)
    • strongswan-doc-5.1.3-26.35.1

References: