SUSE StrongSwan Important Security Issues Resolved 2026-1637

## 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). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like Read the Full Advisory

## 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). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like Read the Full Advisory

* bsc#1261705 * bsc#1261706 * bsc#1261708 * bsc#1261712 * bsc#1261717 * bsc#1261718 * bsc#1261720 Cross- * CVE-2026-35328 * CVE-2026-35329 * CVE-2026-35330 * CVE-2026-35331 * CVE-2026-35332 * CVE-2026-35333 * CVE-2026-35334 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 * 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 Read the Full Advisory

* 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

* 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

Read the Full Advisory