REDHAT-BUG-2479771
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2479771?
The severity of REDHAT-BUG-2479771 is high, rated at 7.
How do I fix REDHAT-BUG-2479771?
To fix REDHAT-BUG-2479771, update ISC BIND (named) to the latest patched version as recommended in the security advisories.
What are the risks associated with REDHAT-BUG-2479771?
The risks associated with REDHAT-BUG-2479771 include potential exploitation through specially crafted DNS requests that could result in denial of service.
Who is affected by REDHAT-BUG-2479771?
All systems running the affected versions of ISC BIND (named) that are handling non-Internet DNS classes are at risk from REDHAT-BUG-2479771.
When was REDHAT-BUG-2479771 published?
REDHAT-BUG-2479771 was published on May 19, 2026.