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SUSE StrongSwan Important Integer Underflow Fix SUSE-2026-2459-1

suse
Calendar Grey June 19, 2026
Dist Suse Esm H88
Eight critical issues resolved with a mandatory strongswan update for openSUSE to enhance system security.
An update that solves eight vulnerabilities can now be installed.

Summary

## This update for strongswan fixes the following issues * CVE-2026-35328: infinite loop when handling supported versions TLS extension (bsc#1261712). * 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: accepting certificates violating 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). * CVE-2026-47895: double-free when destroying certain cloned identities (bsc#1266360). ## Patch Instructions:

Topics%20covered

Topics Covered

security advisory important integer underflow OpenSUSE CVE strongSwan

References

* bsc#1261705

* bsc#1261706

* bsc#1261708

* bsc#1261712

* bsc#1261717

* bsc#1261718

* bsc#1261720

* bsc#1266360

Cross-

* CVE-2026-35328

* CVE-2026-35329

* CVE-2026-35330

* CVE-2026-35331

* CVE-2026-35332

* CVE-2026-35333

* CVE-2026-35334

* CVE-2026-47895

CVSS scores:

* CVE-2026-35328 ( 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-2026-35328 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* 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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2459-1
Release Date: 2026-06-18T16:40:03Z
Rating: important

Topics%20covered

Topics Covered

security advisory important integer underflow OpenSUSE CVE strongSwan

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