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RockyLinux 8 : unbound (RLSA-2026:37282)

high Nessus Plugin ID 330454

Synopsis

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

Description

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:37282 advisory.

 * unbound: Unbound: Denial of Service via excessive EDNS options (CVE-2026-41292)

 * unbound: Unbound: Cache manipulation via 'ghost domain names' attack (CVE-2026-40622)

 * unbound: Unbound: Denial of Service due to excessive resource consumption with large DNS Resource Record Sets (CVE-2026-44390)

 * unbound: Unbound: Denial of Service due to degraded resolution performance in jostle logic (CVE-2026-42534)

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.

See Also

https://bugzilla.redhat.com/show_bug.cgi?id=2480125

https://bugzilla.redhat.com/show_bug.cgi?id=2480127

https://bugzilla.redhat.com/show_bug.cgi?id=2480130

https://bugzilla.redhat.com/show_bug.cgi?id=2480131

https://errata.rockylinux.org/RLSA-2026:37282

Plugin Details

Severity: High

ID: 330454

File Name: rocky_linux_RLSA-2026-37282.nasl

Version: 1.1

Type: Local

Published: 7/28/2026

Updated: 7/28/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-40622

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:H/A:N

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-41292

Vulnerability Information

CPE: cpe:/o:rocky:linux:8, p-cpe:/a:rocky:linux:python3-unbound-debuginfo, p-cpe:/a:rocky:linux:python3-unbound, p-cpe:/a:rocky:linux:unbound-debuginfo, p-cpe:/a:rocky:linux:unbound-debugsource, p-cpe:/a:rocky:linux:unbound-devel, p-cpe:/a:rocky:linux:unbound-libs-debuginfo, p-cpe:/a:rocky:linux:unbound-libs, p-cpe:/a:rocky:linux:unbound

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/28/2026

Vulnerability Publication Date: 5/20/2026

Reference Information

CVE: CVE-2026-40622, CVE-2026-41292, CVE-2026-42534, CVE-2026-44390