Rocky Linux 9 [CIQ] Security Update: bind9.18 / bind9.18-chroot / bind9.18-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_75578)

high Nessus Plugin ID 363849

Synopsis

The Rocky Linux host is missing one or more security updates.

Description

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_75578 advisory.

* bind: BIND 9: Remote Denial of Service via cached SVCB/HTTPS AliasMode records (CVE-2026-81736)

* bind9: bind: BIND 9: Denial of Service via 16-bit length truncation in DNS negative cache handling (CVE-2026-19667)

* bind: BIND resolver: Denial of Service due to resource exhaustion in SVCB/HTTPS AliasMode processing (CVE-2026-81563)

* bind: BIND: Denial of Service via crafted DNSSEC reply (CVE-2026-80274)

* bind: BIND: Denial of Service via malformed DNS64 responses (CVE-2026-19666)

Tenable has extracted the preceding description block directly from the CIQ security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages based on the guidance in CIQ advisory crlsa-2026_75578.

Plugin Details

Severity: High

ID: 363849

File Name: ciq_rocky_linux_9_crlsa-2026_75578.nasl

Version: 1.1

Type: Local

Family: Rocky Linux Local Security Checks

Published: 10/7/2026

Updated: 10/7/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.27

Vendor

Vendor Severity: Unknown

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-81736

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 10/6/2026

Vulnerability Publication Date: 9/16/2026

Reference Information

CVE: CVE-2026-19666, CVE-2026-19667, CVE-2026-80274, CVE-2026-81563, CVE-2026-81736

Detections

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