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openSUSE Leap 15.5 StrongSwan Important Integer Underflow Vuln 2026-0978-1

opensuse
Calendar Grey March 24, 2026
Dist Opensuse Esm H88
Update available for strongswan fixing critical integer underflow issue. Important patching recommended for systems.
An update that solves one vulnerability and has one security fix 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).

Other bug fixes:

-Fix rpm scripts to not break swanctl.conf use (bsc#1256442): * Guard rpm

migration scripts migrating strongswan.service using ipsec.conf on less than 5.8

to strongswan-starter.service by checking the ipsec.service alias provider. *

Call systemd macros for both, strongswan-starter and the strongswan service.

Topics%20covered

Topics Covered

security advisory important system security integer underflow OpenSUSE strongSwan

Patch

## 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 15.5

zypper in -t patch SUSE-2026-978=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-978=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-978=1

* SUSE Linux Enterprise Server 15 SP5 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-978=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP5

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-978=1

Package List

* openSUSE Leap 15.5 (aarch64 ppc64le s390x x86_64 i586)

* strongswan-debugsource-5.9.11-150500.5.14.1

* strongswan-5.9.11-150500.5.14.1

* strongswan-nm-5.9.11-150500.5.14.1

* strongswan-ipsec-5.9.11-150500.5.14.1

* strongswan-libs0-debuginfo-5.9.11-150500.5.14.1

* strongswan-libs0-5.9.11-150500.5.14.1

* strongswan-sqlite-5.9.11-150500.5.14.1

* strongswan-mysql-5.9.11-150500.5.14.1

* strongswan-debuginfo-5.9.11-150500.5.14.1

* strongswan-ipsec-debuginfo-5.9.11-150500.5.14.1

* strongswan-nm-debuginfo-5.9.11-150500.5.14.1

* strongswan-sqlite-debuginfo-5.9.11-150500.5.14.1

* strongswan-mysql-debuginfo-5.9.11-150500.5.14.1

* strongswan-hmac-5.9.11-150500.5.14.1

* openSUSE Leap 15.5 (noarch)

* strongswan-doc-5.9.11-150500.5.14.1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64

x86_64)

* strongswan-debugsource-5.9.11-150500.5.14.1

* strongswan-5.9.11-150500.5.14.1

* strongswan-ipsec-5.9.11-150500.5.14.1

* strongswan-libs0-debuginfo-5.9.11-150500.5.14.1

*...

Read the Full Advisory

References

* bsc#1256442

* bsc#1259472

## References:

* https://www.suse.com/security/cve/CVE-2026-25075.html

* https://bugzilla.suse.com/show_bug.cgi?id=1256442

* https://bugzilla.suse.com/show_bug.cgi?id=1259472

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0978-1
Release Date: 2026-03-23T16:46:25Z
Affected Products: * openSUSE Leap 15.5 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server 15 SP5 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP5

Topics%20covered

Topics Covered

security advisory important system security integer underflow OpenSUSE strongSwan

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