Bug 2479767 (CVE-2026-3039)

Summary:	CVE-2026-3039 bind: BIND 9 server memory exhaustion during GSS-API TKEY negotiation
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	rhel-process-autobot, security-response-team, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in BIND. A remote attacker can exploit this vulnerability by sending maliciously-constructed packets to BIND servers configured for TKEY-based authentication via GSS-API (Generic Security Service Application Program Interface) tokens. This can lead to excessive memory consumption, resulting in a Denial of Service (DoS) for the affected server.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2480121, 2481337, 2481339
Bug Blocks:

Description OSIDB Bzimport 2026-05-19 09:49:46 UTC

BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments.

Comment 2 errata-xmlrpc 2026-06-04 15:11:13 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 3 errata-xmlrpc 2026-06-08 02:53:47 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 4 errata-xmlrpc 2026-06-08 02:55:07 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 5 errata-xmlrpc 2026-06-08 09:36:43 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 6 errata-xmlrpc 2026-06-08 10:48:10 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