Bug 2405830 (CVE-2025-8677) - CVE-2025-8677 bind: Resource exhaustion via malformed DNSKEY handling
Summary: CVE-2025-8677 bind: Resource exhaustion via malformed DNSKEY handling
Keywords:
Status: NEW
Alias: CVE-2025-8677
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2394406 2405831 2405832 2405833 2405834
Blocks: 2406399 2413070 2413104
TreeView+ depends on / blocked
 
Reported: 2025-10-22 15:24 UTC by OSIDB Bzimport
Modified: 2026-02-05 16:24 UTC (History)
1 user (show)

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

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Internet Systems Consortium (ISC) isc-projects bind9 issues 5622 0 None opened Validation of domains signed by unsupported and supported algorithm started failing 2025-11-04 19:04:47 UTC
Red Hat Product Errata RHSA-2025:19912 0 None None None 2025-11-06 15:39:27 UTC
Red Hat Product Errata RHSA-2025:19950 0 None None None 2025-11-10 02:34:18 UTC
Red Hat Product Errata RHSA-2025:21034 0 None None None 2025-11-11 19:49:27 UTC
Red Hat Product Errata RHSA-2025:21111 0 None None None 2025-11-12 10:35:01 UTC
Red Hat Product Errata RHSA-2026:0316 0 None None None 2026-01-15 05:11:26 UTC
Red Hat Product Errata RHSA-2026:0326 0 None None None 2026-01-15 18:46:27 UTC
Red Hat Product Errata RHSA-2026:0332 0 None None None 2026-01-15 18:55:14 UTC
Red Hat Product Errata RHSA-2026:0420 0 None None None 2026-01-14 13:24:24 UTC
Red Hat Product Errata RHSA-2026:0674 0 None None None 2026-01-22 20:17:58 UTC
Red Hat Product Errata RHSA-2026:0677 0 None None None 2026-01-22 20:17:01 UTC
Red Hat Product Errata RHSA-2026:0702 0 None None None 2026-01-22 19:07:44 UTC
Red Hat Product Errata RHSA-2026:0996 0 None None None 2026-01-30 14:19:43 UTC
Red Hat Product Errata RHSA-2026:1541 0 None None None 2026-02-05 16:24:42 UTC

Description OSIDB Bzimport 2025-10-22 15:24:50 UTC 
Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.
Comment 2 Petr Menšík 2025-11-04 19:04:48 UTC 
There were reported regressions shortly after release of 9.18.41 and 9.20.15 version.

Our builds should have them fixed. It failed on RHEL9 or RHEL10, where SHA-1 based signatures are considered insecure. When the domain is signed with both unsupported algorithm (such as 5 or 7) and supported algorithm at the same time, it resulted in SERVFAIL after CVE fixes applied.

https://gitlab.isc.org/isc-projects/bind9/-/issues/5622
https://gitlab.isc.org/isc-projects/bind9/-/merge_requests/11202
Comment 3 errata-xmlrpc 2025-11-06 15:39:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:19912 https://access.redhat.com/errata/RHSA-2025:19912
Comment 4 errata-xmlrpc 2025-11-10 02:34:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:19950 https://access.redhat.com/errata/RHSA-2025:19950
Comment 5 errata-xmlrpc 2025-11-11 19:49:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:21034 https://access.redhat.com/errata/RHSA-2025:21034
Comment 6 errata-xmlrpc 2025-11-12 10:34:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:21111 https://access.redhat.com/errata/RHSA-2025:21111
Comment 17 errata-xmlrpc 2026-01-14 13:24:22 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.20

Via RHSA-2026:0420 https://access.redhat.com/errata/RHSA-2026:0420
Comment 18 errata-xmlrpc 2026-01-15 05:11:25 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.12

Via RHSA-2026:0316 https://access.redhat.com/errata/RHSA-2026:0316
Comment 19 errata-xmlrpc 2026-01-15 18:46:26 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.16

Via RHSA-2026:0326 https://access.redhat.com/errata/RHSA-2026:0326
Comment 20 errata-xmlrpc 2026-01-15 18:55:12 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.18

Via RHSA-2026:0332 https://access.redhat.com/errata/RHSA-2026:0332
Comment 21 errata-xmlrpc 2026-01-22 19:07:42 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.17

Via RHSA-2026:0702 https://access.redhat.com/errata/RHSA-2026:0702
Comment 22 errata-xmlrpc 2026-01-22 20:16:59 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.13

Via RHSA-2026:0677 https://access.redhat.com/errata/RHSA-2026:0677
Comment 23 errata-xmlrpc 2026-01-22 20:17:56 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.19

Via RHSA-2026:0674 https://access.redhat.com/errata/RHSA-2026:0674
Comment 24 errata-xmlrpc 2026-01-30 14:19:41 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.14

Via RHSA-2026:0996 https://access.redhat.com/errata/RHSA-2026:0996
Comment 25 errata-xmlrpc 2026-02-05 16:24:40 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.15

Via RHSA-2026:1541 https://access.redhat.com/errata/RHSA-2026:1541
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