Libreswan Security Update — AlmaLinux 9 (ALSA-2026:46397)
This is a security release for AlmaLinux 9. Update the product on every affected server to the patched release — there is no workaround, and unpatched servers remain exposed until updated.
Düzeltme Komutları
EL8+ (AlmaLinux/CloudLinux/Rocky)
sudo dnf updateSharedLicense lisansı altında bunun anlamı
Your SharedLicense license itself is not affected — this is a change in AlmaLinux 9 software, not in licensing. Update the product through its standard update channel. Licenses keep working through updates; nothing needs re-issuing or re-activating.
Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).
Security Fix(es…
Type:
security
Severity:
important
Release date:
2026-07-27
Description:
Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).
Security Fix(es):
* librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721)
* librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722)
* librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413)
* libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References:
Updated packages listed below:
| Architecture | Package | Checksum |
| aarch64 | libreswan-4.15-10.el9_8.aarch64.rpm | 7fbd48ff475d04b36d0cf46b6ac825e7166829d3e733ab6d2d1619a3166f413f |
| ppc64le | libreswan-4.15-10.el9_8.ppc64le.rpm | 830e17415767f30c35bcf2b6b57653a5cfb1cda37a4ec954e4c23af187564677 |
| s390x | libreswan-4.15-10.el9_8.s390x.rpm | 77fb0935cec3734cd8cb85613bb81a15ced5da2c13837b9f1120e372536011fc |
| x86_64 | libreswan-4.15-10.el9_8.x86_64.rpm | 162383871b2d8b391ac06f55945c85b2a5788b346d9659c4b935143ab313bc4f |
Notes:
This page is generated automatically from Red Hat security data and has not been checked for errors. For clarification or corrections please contact the AlmaLinux Packaging Team.
Referanslar
Güvenlik Danışarlıkları
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