Bug 2479771 (CVE-2026-5946) - CVE-2026-5946 bind: BIND: Denial of Service via specially crafted DNS messages
Summary: CVE-2026-5946 bind: BIND: Denial of Service via specially crafted DNS messages
Keywords:
Status: NEW
Alias: CVE-2026-5946
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: 2480121 2484321 2484322
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-19 09:59 UTC by OSIDB Bzimport
Modified: 2026-09-10 15:28 UTC (History)
18 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-2026:24375 0 None None None 2026-06-08 09:22:24 UTC
Red Hat Product Errata RHBA-2026:24517 0 None None None 2026-06-08 15:10:39 UTC
Red Hat Product Errata RHSA-2026:23360 0 None None None 2026-06-04 15:11:13 UTC
Red Hat Product Errata RHSA-2026:24338 0 None None None 2026-06-08 02:55:10 UTC
Red Hat Product Errata RHSA-2026:24339 0 None None None 2026-06-08 02:53:51 UTC
Red Hat Product Errata RHSA-2026:24367 0 None None None 2026-06-08 09:36:45 UTC
Red Hat Product Errata RHSA-2026:24368 0 None None None 2026-06-08 10:48:12 UTC
Red Hat Product Errata RHSA-2026:55441 0 None None None 2026-08-17 03:44:33 UTC
Red Hat Product Errata RHSA-2026:57189 0 None None None 2026-08-19 23:36:53 UTC
Red Hat Product Errata RHSA-2026:60383 0 None None None 2026-08-26 19:45:00 UTC
Red Hat Product Errata RHSA-2026:62549 0 None None None 2026-09-10 08:50:55 UTC

Description OSIDB Bzimport 2026-05-19 09:59:09 UTC 
Multiple flaws have been identified in named related to the handling of DNS messages whose CLASS is not Internet (IN) — for example, CHAOS or HESIOD, or DNS messages that specify meta-classes (ANY or NONE) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (UPDATE), zone change notifications (NOTIFY), or processing of IN-specific record types in non-IN data — can cause assertion failures in named.
Comment 4 errata-xmlrpc 2026-06-04 15:11:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:23360 https://access.redhat.com/errata/RHSA-2026:23360
Comment 5 errata-xmlrpc 2026-06-08 02:53:51 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:24339 https://access.redhat.com/errata/RHSA-2026:24339
Comment 6 errata-xmlrpc 2026-06-08 02:55:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:24338 https://access.redhat.com/errata/RHSA-2026:24338
Comment 7 errata-xmlrpc 2026-06-08 09:36:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:24367 https://access.redhat.com/errata/RHSA-2026:24367
Comment 8 errata-xmlrpc 2026-06-08 10:48:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:24368 https://access.redhat.com/errata/RHSA-2026:24368
Comment 10 errata-xmlrpc 2026-08-17 03:44:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:55441 https://access.redhat.com/errata/RHSA-2026:55441
Comment 11 errata-xmlrpc 2026-08-19 23:36:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:57189 https://access.redhat.com/errata/RHSA-2026:57189
Comment 12 errata-xmlrpc 2026-08-26 19:44:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:60383 https://access.redhat.com/errata/RHSA-2026:60383
Comment 14 errata-xmlrpc 2026-09-10 08:50:54 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.16

Via RHSA-2026:62549 https://access.redhat.com/errata/RHSA-2026:62549
Note You need to log in before you can comment on or make changes to this bug.