Resource Exhaustion Affecting bind package, versions <0:9.18.50-22.hum1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.52% (42nd percentile)

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  • Snyk IDSNYK-RHEL10-BIND-18222164
  • published23 Jul 2026
  • disclosed22 Jul 2026

Introduced: 22 Jul 2026

NewCVE-2026-11605  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade RHEL:10 bind to version 0:9.18.50-22.hum1 or higher.
This issue was patched in RHSA-2026:42853.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind package and not the bind package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.

CVSS Base Scores

version 3.1