Assertion failure when serving both stale cache data and authoritative zone content
At a glance
Severity
HIGH 7.5
EPSS
EPSS 2.11 % · percentile 82 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
isc
NVD status
Deferred
Description
Client queries that trigger serving stale data and that also require lookups in local authoritative zone data may result in an assertion failure.
This issue affects BIND 9 versions 9.16.13 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.11.33-S1 through 9.11.37-S1, 9.16.13-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.27-S1.