RockyLinux 9 : bind9.18 (RLSA-2026:75578)

high Nessus Plugin ID 363097

Synopsis

The remote RockyLinux host is missing one or more security updates.

Description

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-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 RockyLinux 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.

Plugin Details

Severity: High

ID: 363097

File Name: rocky_linux_RLSA-2026-75578.nasl

Version: 1.1

Type: Local

Family: Rocky Linux Local Security Checks

Published: 10/6/2026

Updated: 10/6/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.27

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

CPE: cpe:/o:rocky:linux:9, p-cpe:/a:rocky:linux:bind9.18-chroot, p-cpe:/a:rocky:linux:bind9.18-debuginfo, p-cpe:/a:rocky:linux:bind9.18-debugsource, p-cpe:/a:rocky:linux:bind9.18-devel, p-cpe:/a:rocky:linux:bind9.18-dnssec-utils-debuginfo, p-cpe:/a:rocky:linux:bind9.18-dnssec-utils, p-cpe:/a:rocky:linux:bind9.18-doc, p-cpe:/a:rocky:linux:bind9.18-libs-debuginfo, p-cpe:/a:rocky:linux:bind9.18-libs, p-cpe:/a:rocky:linux:bind9.18-utils-debuginfo, p-cpe:/a:rocky:linux:bind9.18-utils, p-cpe:/a:rocky:linux:bind9.18

Required KB Items: Host/local_checks_enabled, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/cpu

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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