SUSE-SU-2026:1762-1: important: Security update for strongswan

Fri May 8 16:31:07 UTC 2026

# Security update for strongswan

Announcement ID: SUSE-SU-2026:1762-1  
Release Date: 2026-05-08T08:58:30Z  
Rating: important  
References:

  * bsc#1261705
  * bsc#1261706
  * bsc#1261708
  * bsc#1261717
  * bsc#1261718
  * bsc#1261720

Cross-References:

  * CVE-2026-35329
  * CVE-2026-35330
  * CVE-2026-35331
  * CVE-2026-35332
  * CVE-2026-35333
  * CVE-2026-35334

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:

  * https://www.suse.com/security/cve/CVE-2026-35329.html
  * https://www.suse.com/security/cve/CVE-2026-35330.html
  * https://www.suse.com/security/cve/CVE-2026-35331.html
  * https://www.suse.com/security/cve/CVE-2026-35332.html
  * https://www.suse.com/security/cve/CVE-2026-35333.html
  * https://www.suse.com/security/cve/CVE-2026-35334.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1261705
  * https://bugzilla.suse.com/show_bug.cgi?id=1261706
  * https://bugzilla.suse.com/show_bug.cgi?id=1261708
  * https://bugzilla.suse.com/show_bug.cgi?id=1261717
  * https://bugzilla.suse.com/show_bug.cgi?id=1261718
  * https://bugzilla.suse.com/show_bug.cgi?id=1261720

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