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: 2026-07-14 07:26 UTC (History)
6 users (show)

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

Attachments (Terms of Use)

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
Note You need to log in before you can comment on or make changes to this bug.