Bug 2423177 (CVE-2025-14831) - CVE-2025-14831 gnutls: GnuTLS: Denial of Service via excessive resource consumption during certificate verification
Summary: CVE-2025-14831 gnutls: GnuTLS: Denial of Service via excessive resource consu...
Keywords:
Status: NEW
Alias: CVE-2025-14831
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2437986 2437987
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-17 14:52 UTC by OSIDB Bzimport
Modified: 2026-05-07 18:11 UTC (History)
6 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 RHBA-2026:4361 0 None None None 2026-03-11 15:36:08 UTC
Red Hat Product Errata RHBA-2026:4478 0 None None None 2026-03-12 13:10:00 UTC
Red Hat Product Errata RHBA-2026:4485 0 None None None 2026-03-12 13:21:44 UTC
Red Hat Product Errata RHBA-2026:4486 0 None None None 2026-03-12 15:05:13 UTC
Red Hat Product Errata RHBA-2026:5650 0 None None None 2026-03-24 16:23:36 UTC
Red Hat Product Errata RHBA-2026:5654 0 None None None 2026-03-24 16:48:04 UTC
Red Hat Product Errata RHBA-2026:5820 0 None None None 2026-03-25 14:36:35 UTC
Red Hat Product Errata RHBA-2026:5839 0 None None None 2026-03-25 17:50:16 UTC
Red Hat Product Errata RHBA-2026:6197 0 None None None 2026-03-30 17:24:10 UTC
Red Hat Product Errata RHBA-2026:6258 0 None None None 2026-03-31 12:32:30 UTC
Red Hat Product Errata RHBA-2026:6479 0 None None None 2026-04-02 14:15:44 UTC
Red Hat Product Errata RHBA-2026:7043 0 None None None 2026-04-08 12:44:12 UTC
Red Hat Product Errata RHBA-2026:7297 0 None None None 2026-04-09 13:20:15 UTC
Red Hat Product Errata RHSA-2026:13812 0 None None None 2026-05-05 17:49:45 UTC
Red Hat Product Errata RHSA-2026:3477 0 None None None 2026-03-02 01:32:52 UTC
Red Hat Product Errata RHSA-2026:4188 0 None None None 2026-03-10 23:26:33 UTC
Red Hat Product Errata RHSA-2026:5585 0 None None None 2026-03-24 10:24:58 UTC
Red Hat Product Errata RHSA-2026:6618 0 None None None 2026-04-06 03:24:37 UTC
Red Hat Product Errata RHSA-2026:6630 0 None None None 2026-04-06 07:01:23 UTC
Red Hat Product Errata RHSA-2026:6737 0 None None None 2026-04-07 07:50:00 UTC
Red Hat Product Errata RHSA-2026:6738 0 None None None 2026-04-07 07:53:33 UTC

Description OSIDB Bzimport 2025-12-17 14:52:47 UTC 
Verifying Certificates with large amout of name constraints and subject alternative names makes GnuTLS vulnerable to DoS attacks

When trying to verify a certificate chain using the certtool --verify command, with certificates, that contain a larger number of SANs and Name Constraints, GnuTLS tries to verify all of them, without any bound on the quantity of those fields.
Using those crafted malicious certificate, GnuTLS is vulnerable to DoS attacks by excessive usage of CPU and memory.
Comment 2 errata-xmlrpc 2026-03-02 01:32:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:3477 https://access.redhat.com/errata/RHSA-2026:3477
Comment 3 errata-xmlrpc 2026-03-10 23:26:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:4188 https://access.redhat.com/errata/RHSA-2026:4188
Comment 4 errata-xmlrpc 2026-03-24 10:24:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:5585 https://access.redhat.com/errata/RHSA-2026:5585
Comment 5 errata-xmlrpc 2026-04-06 03:24:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:6618 https://access.redhat.com/errata/RHSA-2026:6618
Comment 6 errata-xmlrpc 2026-04-06 07:01:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:6630 https://access.redhat.com/errata/RHSA-2026:6630
Comment 7 errata-xmlrpc 2026-04-07 07:49:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:6737 https://access.redhat.com/errata/RHSA-2026:6737
Comment 8 errata-xmlrpc 2026-04-07 07:53:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:6738 https://access.redhat.com/errata/RHSA-2026:6738
Comment 10 errata-xmlrpc 2026-05-05 17:49:44 UTC 
This issue has been addressed in the following products:

  RHEL-8 based Middleware Containers

Via RHSA-2026:13812 https://access.redhat.com/errata/RHSA-2026:13812
Note You need to log in before you can comment on or make changes to this bug.