Bug 2501764 (CVE-2026-14957) - CVE-2026-14957 libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process
Summary: CVE-2026-14957 libreswan: badly formatted X.509 certificate can cause an asse...
Keywords:
Status: NEW
Alias: CVE-2026-14957
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2501766
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-17 15:07 UTC by OSIDB Bzimport
Modified: 2026-09-09 09:23 UTC (History)
22 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 03:28:36 UTC
Red Hat Product Errata RHSA-2026:46398 0 None None None 2026-07-27 03:32:21 UTC
Red Hat Product Errata RHSA-2026:46986 0 None None None 2026-07-27 23:28:23 UTC
Red Hat Product Errata RHSA-2026:55449 0 None None None 2026-08-17 02:21:54 UTC
Red Hat Product Errata RHSA-2026:57741 0 None None None 2026-08-20 20:50:26 UTC
Red Hat Product Errata RHSA-2026:61258 0 None None None 2026-08-31 04:09:21 UTC
Red Hat Product Errata RHSA-2026:61779 0 None None None 2026-08-31 20:31:14 UTC
Red Hat Product Errata RHSA-2026:63041 0 None None None 2026-09-08 14:02:39 UTC
Red Hat Product Errata RHSA-2026:63044 0 None None None 2026-09-09 09:23:10 UTC
Red Hat Product Errata RHSA-2026:63100 0 None None None 2026-09-08 11:26:06 UTC

Description OSIDB Bzimport 2026-07-17 15:07:27 UTC 
Libreswan contains a reachable assertion in the X.509 certificate processing path when operating in FIPS mode. After calling CERT_ExtractPublicKey(), the returned public key is asserted to be non-NULL, although the function may legitimately return NULL if public key extraction fails (for example, when processing a certificate with an RSA exponent of zero). An unauthenticated remote attacker can send a specially crafted CERT payload during an IKEv1 or IKEv2 exchange to trigger the assertion and terminate the daemon, resulting in a denial of service. The issue is only reachable when Libreswan is running in FIPS mode and certificate-based authentication is in use with at least one CA certificate loaded in the Libreswan NSS database; deployments using only Pre-Shared Key (PSK) authentication without loaded CA certificates are not affected.
Comment 4 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 5 errata-xmlrpc 2026-07-27 03:28:35 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 6 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 7 errata-xmlrpc 2026-07-27 23:28:22 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 8 errata-xmlrpc 2026-08-17 02:21:52 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 9 errata-xmlrpc 2026-08-20 20:50:25 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 10 Paul Wouters 2026-08-25 19:53:28 UTC 
this bug should be closed
Comment 11 errata-xmlrpc 2026-08-31 04:09:20 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 12 errata-xmlrpc 2026-08-31 20:31:12 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 13 errata-xmlrpc 2026-09-08 11:26:03 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 14 errata-xmlrpc 2026-09-08 14:02:38 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 15 errata-xmlrpc 2026-09-09 09:23:08 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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