Bug 2494149 (CVE-2026-12413) - CVE-2026-12413 librenswan: IKEv2 Denial of Service via malformed fragmentation
Summary: CVE-2026-12413 librenswan: IKEv2 Denial of Service via malformed fragmentation
Keywords:
Status: NEW
Alias: CVE-2026-12413
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2494156
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-29 11:30 UTC by OSIDB Bzimport
Modified: 2026-09-09 09:23 UTC (History)
21 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:46396 0 None None None 2026-07-27 03:11:29 UTC
Red Hat Product Errata RHSA-2026:46397 0 None None None 2026-07-27 03:28:32 UTC
Red Hat Product Errata RHSA-2026:46398 0 None None None 2026-07-27 03:32:20 UTC
Red Hat Product Errata RHSA-2026:46986 0 None None None 2026-07-27 23:28:22 UTC
Red Hat Product Errata RHSA-2026:55449 0 None None None 2026-08-17 02:21:50 UTC
Red Hat Product Errata RHSA-2026:57741 0 None None None 2026-08-20 20:50:24 UTC
Red Hat Product Errata RHSA-2026:61258 0 None None None 2026-08-31 04:09:19 UTC
Red Hat Product Errata RHSA-2026:61779 0 None None None 2026-08-31 20:31:11 UTC
Red Hat Product Errata RHSA-2026:63041 0 None None None 2026-09-08 14:02:37 UTC
Red Hat Product Errata RHSA-2026:63044 0 None None None 2026-09-09 09:23:04 UTC
Red Hat Product Errata RHSA-2026:63100 0 None None None 2026-09-08 11:26:03 UTC

Description OSIDB Bzimport 2026-06-29 11:30:12 UTC 
The Libreswan Project was notified of an issue when it receives an invalidly formatted IKEv2 fragment causing the server to crash and restart. A continued stream of such packets would cause a denial
of service.

Severity : Medium
Vulnerable versions : 4.6 - 5.3
Not vulnerable : 5.3.1 or later
Comment 2 errata-xmlrpc 2026-07-27 03:11:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:46396 https://access.redhat.com/errata/RHSA-2026:46396
Comment 3 errata-xmlrpc 2026-07-27 03:28:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:46397 https://access.redhat.com/errata/RHSA-2026:46397
Comment 4 errata-xmlrpc 2026-07-27 03:32:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:46398 https://access.redhat.com/errata/RHSA-2026:46398
Comment 5 errata-xmlrpc 2026-07-27 23:28:21 UTC 
This issue has been addressed in the following products:

  Fast Datapath for Red Hat Enterprise Linux 9

Via RHSA-2026:46986 https://access.redhat.com/errata/RHSA-2026:46986
Comment 6 errata-xmlrpc 2026-08-17 02:21:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:55449 https://access.redhat.com/errata/RHSA-2026:55449
Comment 7 errata-xmlrpc 2026-08-20 20:50:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:57741 https://access.redhat.com/errata/RHSA-2026:57741
Comment 8 errata-xmlrpc 2026-08-31 04:09:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:61258 https://access.redhat.com/errata/RHSA-2026:61258
Comment 9 errata-xmlrpc 2026-08-31 20:31:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:61779 https://access.redhat.com/errata/RHSA-2026:61779
Comment 10 errata-xmlrpc 2026-09-08 11:26:02 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.20

Via RHSA-2026:63100 https://access.redhat.com/errata/RHSA-2026:63100
Comment 11 errata-xmlrpc 2026-09-08 14:02:35 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.21

Via RHSA-2026:63041 https://access.redhat.com/errata/RHSA-2026:63041
Comment 12 errata-xmlrpc 2026-09-09 09:23:02 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.19

Via RHSA-2026:63044 https://access.redhat.com/errata/RHSA-2026:63044
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